multiple: use object level permissions

jdav_web/finance/admin.py

@@ -8,8 +8,12 @@ from django.utils.translation import gettext_lazy as _
 from django.shortcuts import render
 from django.conf import settings
 
+from contrib.admin import CommonAdminInlineMixin, CommonAdminMixin
+
+from rules.contrib.admin import ObjectPermissionsModelAdmin
+
 from .models import Ledger, Statement, Receipt, Transaction, Bill, StatementSubmitted, StatementConfirmed,\
-        StatementUnSubmitted
+        StatementUnSubmitted, BillOnStatementProxy
 
 
 @admin.register(Ledger)
@@ -17,8 +21,8 @@ class LedgerAdmin(admin.ModelAdmin):
     search_fields = ('name', )
 
 
-class BillOnStatementInline(admin.TabularInline):
+class BillOnStatementInline(CommonAdminInlineMixin, admin.TabularInline):
-    model = Bill
+    model = BillOnStatementProxy
     extra = 0
     sortable_options = []
     fields = ['short_description', 'explanation', 'amount', 'paid_by', 'proof']
@@ -26,16 +30,11 @@ class BillOnStatementInline(admin.TabularInline):
         TextField: {'widget': Textarea(attrs={'rows': 1, 'cols': 40})}
     }
 
-    def get_readonly_fields(self, request, obj=None):
-        if obj is not None and obj.submitted:
-            return self.fields
-        return super(BillOnStatementInline, self).get_readonly_fields(request, obj)
-
 
 @admin.register(StatementUnSubmitted)
-class StatementUnSubmittedAdmin(admin.ModelAdmin):
+class StatementUnSubmittedAdmin(CommonAdminMixin, admin.ModelAdmin):
     fields = ['short_description', 'explanation', 'excursion', 'submitted']
-    list_display = ['__str__', 'excursion']
+    list_display = ['__str__', 'excursion', 'created_by']
     inlines = [BillOnStatementInline]
 
     def save_model(self, request, obj, form, change):
@@ -43,16 +42,6 @@ class StatementUnSubmittedAdmin(admin.ModelAdmin):
             obj.created_by = request.user.member
         super().save_model(request, obj, form, change)
 
-    def get_queryset(self, request):
-        queryset = super().get_queryset(request)
-        if request.user.has_perm('members.may_list_all_statements'):
-            return queryset
-
-        if not hasattr(request.user, 'member'):
-            return Member.objects.none()
-
-        return queryset.filter(Q(created_by=request.user.member) | Q(excursion__jugendleiter=request.user.member))
-
     def get_readonly_fields(self, request, obj=None):
         readonly_fields = ['submitted', 'excursion']
         if obj is not None and obj.submitted:
@@ -109,7 +98,7 @@ class TransactionOnSubmittedStatementInline(admin.TabularInline):
 
 
 class BillOnSubmittedStatementInline(BillOnStatementInline):
-    model = Bill
+    model = BillOnStatementProxy
     extra = 0
     sortable_options = []
     fields = ['short_description', 'explanation', 'amount', 'paid_by', 'proof', 'costs_covered']

jdav_web/finance/migrations/0002_alter_permissions.py

@@ -0,0 +1,49 @@
+# Generated by Django 4.0.1 on 2023-04-03 20:34
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    #replaces = [('finance', '0002_billonexcursionproxy_billonstatementproxy_and_more'), ('finance', '0003_alter_statementunsubmitted_options'), ('finance', '0004_alter_billonexcursionproxy_options'), ('finance', '0005_alter_billonstatementproxy_options'), ('finance', '0006_alter_statementsubmitted_options'), ('finance', '0007_alter_billonexcursionproxy_options_and_more')]
+
+    dependencies = [
+        ('finance', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='statementsubmitted',
+            options={'permissions': [('process_statementsubmitted', 'Can manage submitted statements.')], 'verbose_name': 'Submitted statement', 'verbose_name_plural': 'Submitted statements'},
+        ),
+        migrations.CreateModel(
+            name='BillOnExcursionProxy',
+            fields=[
+            ],
+            options={
+                'verbose_name': 'Bill',
+                'verbose_name_plural': 'Bills',
+                'proxy': True,
+                'indexes': [],
+                'constraints': [],
+            },
+            bases=('finance.bill',),
+        ),
+        migrations.CreateModel(
+            name='BillOnStatementProxy',
+            fields=[
+            ],
+            options={
+                'verbose_name': 'Bill',
+                'verbose_name_plural': 'Bills',
+                'proxy': True,
+                'indexes': [],
+                'constraints': [],
+            },
+            bases=('finance.bill',),
+        ),
+        migrations.AlterModelOptions(
+            name='statementunsubmitted',
+            options={'verbose_name': 'Statement in preparation', 'verbose_name_plural': 'Statements in preparation'},
+        ),
+    ]

jdav_web/finance/migrations/0003_alter_bill_options_and_more.py

@@ -0,0 +1,41 @@
+# Generated by Django 4.0.1 on 2023-04-04 12:37
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('finance', '0002_alter_permissions'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='bill',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'verbose_name': 'Bill', 'verbose_name_plural': 'Bills'},
+        ),
+        migrations.AlterModelOptions(
+            name='billonexcursionproxy',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'verbose_name': 'Bill', 'verbose_name_plural': 'Bills'},
+        ),
+        migrations.AlterModelOptions(
+            name='billonstatementproxy',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'verbose_name': 'Bill', 'verbose_name_plural': 'Bills'},
+        ),
+        migrations.AlterModelOptions(
+            name='statement',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'permissions': [('may_edit_submitted_statements', 'Is allowed to edit submitted statements')], 'verbose_name': 'Statement', 'verbose_name_plural': 'Statements'},
+        ),
+        migrations.AlterModelOptions(
+            name='statementconfirmed',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'permissions': [('may_manage_confirmed_statements', 'Can view and manage confirmed statements.')], 'verbose_name': 'Paid statement', 'verbose_name_plural': 'Paid statements'},
+        ),
+        migrations.AlterModelOptions(
+            name='statementsubmitted',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'permissions': [('process_statementsubmitted', 'Can manage submitted statements.')], 'verbose_name': 'Submitted statement', 'verbose_name_plural': 'Submitted statements'},
+        ),
+        migrations.AlterModelOptions(
+            name='statementunsubmitted',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'verbose_name': 'Statement in preparation', 'verbose_name_plural': 'Statements in preparation'},
+        ),
+    ]

jdav_web/finance/models.py

@@ -2,11 +2,16 @@ import math
 from itertools import groupby
 from decimal import Decimal, ROUND_HALF_DOWN
 from django.utils import timezone
+from .rules import is_creator, not_submitted, leads_excursion
+from members.rules import is_leader, statement_not_submitted
 
 from django.db import models
 from django.utils.translation import gettext_lazy as _
 from members.models import Member, Freizeit, OEFFENTLICHE_ANREISE, MUSKELKRAFT_ANREISE
 from django.conf import settings
+import rules
+from contrib.models import CommonModel
+from contrib.rules import has_global_perm
 
 # Create your models here.
 
@@ -35,7 +40,7 @@ class StatementManager(models.Manager):
         return super().get_queryset().filter(submitted=False, confirmed=False)
 
 
-class Statement(models.Model):
+class Statement(CommonModel):
     MISSING_LEDGER, NON_MATCHING_TRANSACTIONS, VALID = 0, 1, 2
 
     short_description = models.CharField(verbose_name=_('Short description'),
@@ -71,10 +76,20 @@ class Statement(models.Model):
                                      on_delete=models.SET_NULL,
                                      related_name='confirmed_statements')
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         verbose_name = _('Statement')
         verbose_name_plural = _('Statements')
-        permissions = [('may_edit_submitted_statements', 'Is allowed to edit submitted statements')]
+        permissions = [
+            ('may_edit_submitted_statements', 'Is allowed to edit submitted statements')
+        ]
+        rules_permissions = {
+            # this is suboptimal, but Statement is only ever used as an inline on Freizeit
+            # so we check for excursion permissions
+            'add_obj': is_leader,
+            'view_obj': is_leader | has_global_perm('members.view_global_freizeit'),
+            'change_obj': is_leader & statement_not_submitted,
+            'delete_obj': is_leader & statement_not_submitted,
+        }
 
     def __str__(self):
         if self.excursion is not None:
@@ -306,10 +321,16 @@ class StatementUnSubmittedManager(models.Manager):
 class StatementUnSubmitted(Statement):
     objects = StatementUnSubmittedManager()
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         proxy = True
         verbose_name = _('Statement in preparation')
         verbose_name_plural = _('Statements in preparation')
+        rules_permissions = {
+            'add_obj': rules.is_staff,
+            'view_obj': is_creator | leads_excursion | has_global_perm('finance.view_global_statementunsubmitted'),
+            'change_obj': is_creator | leads_excursion,
+            'delete_obj': is_creator | leads_excursion,
+        }
 
 
 class StatementSubmittedManager(models.Manager):
@@ -320,11 +341,13 @@ class StatementSubmittedManager(models.Manager):
 class StatementSubmitted(Statement):
     objects = StatementSubmittedManager()
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         proxy = True
         verbose_name = _('Submitted statement')
         verbose_name_plural = _('Submitted statements')
-        permissions = (('may_manage_submitted_statements', 'Can view and manage submitted statements.'),)
+        permissions = [
+            ('process_statementsubmitted', 'Can manage submitted statements.'),
+        ]
 
 
 class StatementConfirmedManager(models.Manager):
@@ -335,14 +358,16 @@ class StatementConfirmedManager(models.Manager):
 class StatementConfirmed(Statement):
     objects = StatementConfirmedManager()
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         proxy = True
         verbose_name = _('Paid statement')
         verbose_name_plural = _('Paid statements')
-        permissions = (('may_manage_confirmed_statements', 'Can view and manage confirmed statements.'),)
+        permissions = [
+            ('may_manage_confirmed_statements', 'Can view and manage confirmed statements.'),
+        ]
 
 
-class Bill(models.Model):
+class Bill(CommonModel):
     statement = models.ForeignKey(Statement, verbose_name=_('Statement'), on_delete=models.CASCADE)
     short_description = models.CharField(verbose_name=_('Short description'), max_length=30)
     explanation = models.TextField(verbose_name=_('Explanation'), blank=True)
@@ -363,9 +388,37 @@ class Bill(models.Model):
     pretty_amount.admin_order_field = 'amount'
     pretty_amount.short_description = _('Amount')
 
-    class Meta:
+    class Meta(CommonModel.Meta):
+        verbose_name = _('Bill')
+        verbose_name_plural = _('Bills')
+
+
+class BillOnExcursionProxy(Bill):
+    class Meta(CommonModel.Meta):
+        proxy = True
+        verbose_name = _('Bill')
+        verbose_name_plural = _('Bills')
+        rules_permissions = {
+            'add_obj': leads_excursion & not_submitted,
+            'view_obj': leads_excursion | has_global_perm('finance.view_global_billonexcursionproxy'),
+            'change_obj': (leads_excursion | has_global_perm('finance.change_global_billonexcursionproxy')) & not_submitted,
+            'delete_obj': (leads_excursion | has_global_perm('finance.delete_global_billonexcursionproxy')) & not_submitted,
+        }
+
+
+class BillOnStatementProxy(Bill):
+    class Meta(CommonModel.Meta):
+        proxy = True
         verbose_name = _('Bill')
         verbose_name_plural = _('Bills')
+        rules_permissions = {
+            'add_obj': (is_creator | leads_excursion) & not_submitted,
+            'view_obj': is_creator | leads_excursion | has_global_perm('finance.view_global_billonstatementproxy'),
+            'change_obj': (is_creator | leads_excursion | has_global_perm('finance.change_global_billonstatementproxy'))
+                     & (not_submitted | has_global_perm('finance.process_statementsubmitted')),
+            'delete_obj': (is_creator | leads_excursion | has_global_perm('finance.delete_global_billonstatementproxy'))
+                     & not_submitted,
+        }
 
 
 class Transaction(models.Model):

jdav_web/finance/rules.py

@@ -0,0 +1,36 @@
+from members.models import Freizeit
+from contrib.rules import memberize_user
+from rules import predicate
+from members.rules import _is_leader
+
+
+@predicate
+@memberize_user
+def is_creator(self, statement):
+    assert statement is not None
+    return statement.created_by == self
+
+
+@predicate
+@memberize_user
+def not_submitted(self, statement):
+    assert statement is not None
+    if isinstance(statement, Freizeit):
+        if hasattr(statement, 'statement'):
+            return not statement.statement.submitted
+        else:
+            return True
+    return not statement.submitted
+
+
+@predicate
+@memberize_user
+def leads_excursion(self, statement):
+    assert statement is not None
+    if isinstance(statement, Freizeit):
+        return _is_leader(self, statement)
+    if not hasattr(statement, 'excursion'):
+        return False
+    if statement.excursion is None:
+        return False
+    return _is_leader(self, statement.excursion)

jdav_web/mailer/admin.py

@@ -7,12 +7,15 @@ from django import forms
 #from easy_select2 import apply_select2
 import json
 
+from rules.contrib.admin import ObjectPermissionsModelAdmin
+
 from .models import Message, Attachment, MessageForm, EmailAddress, EmailAddressForm
 from .mailutils import NOT_SENT, PARTLY_SENT
 from members.models import Member
+from contrib.admin import CommonAdminMixin, CommonAdminInlineMixin
 
 
-class AttachmentInline(admin.TabularInline):
+class AttachmentInline(CommonAdminInlineMixin, admin.TabularInline):
     model = Attachment
     extra = 0
 
@@ -27,8 +30,9 @@ class EmailAddressAdmin(admin.ModelAdmin):
     form = EmailAddressForm
 
 
-class MessageAdmin(admin.ModelAdmin):
+class MessageAdmin(CommonAdminMixin, ObjectPermissionsModelAdmin):
     """Message creation view"""
+    exclude = ('created_by',)
     list_display = ('subject', 'get_recipients', 'sent')
     search_fields = ('subject',)
     change_form_template = "mailer/change_form.html"
@@ -42,6 +46,11 @@ class MessageAdmin(admin.ModelAdmin):
     form = MessageForm
     filter_horizontal = ('to_members','reply_to')
 
+    def save_model(self, request, obj, form, change):
+        if not change and hasattr(request.user, 'member'):
+            obj.created_by = request.user.member
+        super().save_model(request, obj, form, change)
+
     def send_message(self, request, queryset):
         if request.POST.get('confirmed'):
             for msg in queryset:

jdav_web/mailer/migrations/0002_message_created_by.py

@@ -0,0 +1,20 @@
+# Generated by Django 4.0.1 on 2023-04-02 12:06
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('members', '0006_rename_permissions'),
+        ('mailer', '0001_initial_squashed_0006_auto_20210924_1155'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='message',
+            name='created_by',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='created_messages', to='members.member', verbose_name='Created by'),
+        ),
+    ]

jdav_web/mailer/migrations/0003_alter_message_options.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.0.1 on 2023-04-04 12:35
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mailer', '0002_message_created_by'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='message',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'permissions': (('submit_mails', 'Can submit mails'),), 'verbose_name': 'message', 'verbose_name_plural': 'messages'},
+        ),
+    ]

jdav_web/mailer/models.py

@@ -9,6 +9,9 @@ from jdav_web.celery import app
 from django.core.validators import RegexValidator
 from django.conf import settings
 
+from contrib.models import CommonModel
+from .rules import is_creator
+
 import os
 
 
@@ -59,7 +62,7 @@ class EmailAddressForm(forms.ModelForm):
 
 
 # Create your models here.
-class Message(models.Model):
+class Message(CommonModel):
     """Represents a message that can be sent to some members"""
     subject = models.CharField(_('subject'), max_length=50)
     content = models.TextField(_('content'))
@@ -88,6 +91,11 @@ class Message(models.Model):
                                                     blank=True,
                                                     related_name='reply_to_email_addr')
     sent = models.BooleanField(_('sent'), default=False)
+    created_by = models.ForeignKey('members.Member', verbose_name=_('Created by'),
+                                   blank=True,
+                                   null=True,
+                                   on_delete=models.SET_NULL,
+                                   related_name='created_messages')
 
     def __str__(self):
         return self.subject
@@ -175,12 +183,17 @@ class Message(models.Model):
             self.save()
         return success
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         verbose_name = _('message')
         verbose_name_plural = _('messages')
         permissions = (
             ("submit_mails", _("Can submit mails")),
         )
+        rules_permissions = {
+            "view_obj": is_creator,
+            "change_obj": is_creator,
+            "delete_obj": is_creator,
+        }
 
 
 class MessageForm(forms.ModelForm):
@@ -203,7 +216,7 @@ class MessageForm(forms.ModelForm):
             raise ValidationError(_('At least one reply-to recipient is required. '
                                     'Use the info mail if you really want no reply-to recipient.'))
 
-class Attachment(models.Model):
+class Attachment(CommonModel):
     """Represents an attachment to an email"""
     msg = models.ForeignKey(Message, on_delete=models.CASCADE)
     # file (not naming it file because of builtin)
@@ -218,3 +231,10 @@ class Attachment(models.Model):
     class Meta:
         verbose_name = _('attachment')
         verbose_name_plural = _('attachments')
+        rules_permissions = {
+            "add_obj": is_creator,
+            "view_obj": is_creator,
+            "change_obj": is_creator,
+            "delete_obj": is_creator,
+        }
+

jdav_web/mailer/rules.py

@@ -0,0 +1,10 @@
+from contrib.rules import memberize_user
+from rules import predicate
+
+@predicate
+@memberize_user
+def is_creator(self, message):
+    if message is None:
+        return False
+
+    return message.created_by == self

jdav_web/members/admin.py

@@ -28,6 +28,8 @@ from django.shortcuts import render
 from django.core.exceptions import PermissionDenied
 from .pdf import render_tex
 
+from contrib.admin import CommonAdminInlineMixin, CommonAdminMixin
+
 import nested_admin
 
 from .models import (Member, Group, Freizeit, MemberNoteList, NewMemberOnList, Klettertreff,
@@ -35,7 +37,7 @@ from .models import (Member, Group, Freizeit, MemberNoteList, NewMemberOnList, K
                      PermissionGroup, MemberTraining, TrainingCategory,
                      KlettertreffAttendee, ActivityCategory,
                      annotate_activity_score, RegistrationPassword, MemberUnconfirmedProxy)
-from finance.models import Statement, Bill
+from finance.models import Statement, BillOnExcursionProxy
 from mailer.mailutils import send as send_mail, get_echo_link
 from django.conf import settings
 #from easy_select2 import apply_select2
@@ -57,7 +59,7 @@ class FilteredMemberFieldMixin:
         elif not hasattr(request.user, 'member'):
             field.queryset = Member.objects.none()
         else:
-            field.queryset = request.user.member.filter_queryset_by_permissions()
+            field.queryset = request.user.member.filter_queryset_by_permissions(model=Member)
         return field
 
     def formfield_for_manytomany(self, db_field, request=None, **kwargs):
@@ -75,7 +77,7 @@ class FilteredMemberFieldMixin:
         elif not hasattr(request.user, 'member'):
             field.queryset = Member.objects.none()
         else:
-            field.queryset = request.user.member.filter_queryset_by_permissions()
+            field.queryset = request.user.member.filter_queryset_by_permissions(model=Member)
         return field
 
 
@@ -91,7 +93,7 @@ class PermissionOnMemberInline(admin.StackedInline):
     can_delete = False
 
 
-class TrainingOnMemberInline(admin.TabularInline):
+class TrainingOnMemberInline(CommonAdminInlineMixin, admin.TabularInline):
     model = MemberTraining
     formfield_overrides = {
         TextField: {'widget': Textarea(attrs={'rows': 1, 'cols': 40})}
@@ -145,7 +147,7 @@ class RegistrationFilter(admin.SimpleListFilter):
 
 
 # Register your models here.
-class MemberAdmin(admin.ModelAdmin):
+class MemberAdmin(CommonAdminMixin, admin.ModelAdmin):
     fields = ['prename', 'lastname', 'email', 'email_parents', 'cc_email_parents', 'street', 'plz',
               'town', 'address_extra', 'country', 'nationality',
               'phone_number_private', 'phone_number_mobile',
@@ -156,7 +158,8 @@ class MemberAdmin(admin.ModelAdmin):
               'medication', 'tetanus_vaccination', 'photos_may_be_taken', 'legal_guardians',
               'good_conduct_certificate_presented_date', 'good_conduct_certificate_presentation_needed',
               'iban', 'has_key', 'has_free_ticket_gym', 'gets_newsletter', 'registered', 'registration_form',
-              'active', 'echoed', 'join_date', 'leave_date', 'comments', 'technical_comments']
+              'active', 'echoed', 'join_date', 'leave_date', 'comments', 'technical_comments',
+              'user']
     list_display = ('name_text_or_link', 'birth_date', 'age', 'get_group', 'gets_newsletter',
                     'registered', 'active', 'echoed', 'comments', 'activity_score')
     search_fields = ('prename', 'lastname', 'email')
@@ -174,60 +177,13 @@ class MemberAdmin(admin.ModelAdmin):
 
     sensitive_fields = ['iban', 'registration_form', 'comments']
 
-    def has_view_permission(self, request, obj=None):
+    field_permissions = {
-        user = request.user
+        'user': 'members.may_set_auth_user',
-        if request.user.has_perm('members.may_view_everyone'):
+        'group': 'members.may_change_group'
-            return True
+    }
-
-        if not hasattr(user, 'member'):
-            return False
-
-        if obj is None:
-            return True
-        return request.user.member.may_view(obj)
-
-    def has_change_permission(self, request, obj=None):
-        user = request.user
-        if request.user.has_perm('members.may_change_everyone'):
-            return True
-
-        if not hasattr(user, 'member'):
-            return False
-
-        if obj is None:
-            return True
-        return request.user.member.may_change(obj)
-
-    def has_delete_permission(self, request, obj=None):
-        user = request.user
-        if request.user.has_perm('members.may_delete_everyone'):
-            return True
-
-        if not hasattr(user, 'member'):
-            return False
-
-        if obj is None:
-            return True
-        return request.user.member.may_delete(obj)
-
-    def get_fields(self, request, obj=None):
-        if request.user.has_perm('members.may_set_auth_user'):
-            if 'user' not in self.fields:
-                self.fields.append('user')
-        else:
-            if 'user' in self.fields:
-                self.fields.remove('user')
-        return super(MemberAdmin, self).get_fields(request, obj)
 
     def get_queryset(self, request):
         queryset = super().get_queryset(request)
-        if request.user.has_perm('members.may_list_everyone'):
-            return annotate_activity_score(queryset.prefetch_related('group'))
-
-        if not hasattr(request.user, 'member'):
-            return Member.objects.none()
-
-        queryset = request.user.member.filter_queryset_by_permissions(queryset, annotate=True)
         return annotate_activity_score(queryset.prefetch_related('group'))
 
     def change_view(self, request, object_id, form_url="", extra_context=None):
@@ -242,11 +198,6 @@ class MemberAdmin(admin.ModelAdmin):
                                                         extra_context=extra_context)
         except Member.DoesNotExist:
             return super().change_view(request, object_id)
-        except PermissionDenied:
-            member = Member.objects.get(pk=object_id)
-            messages.error(request,
-                    _("You are not allowed to view %(name)s.") % {'name': member.name})
-            return HttpResponseRedirect(reverse('admin:%s_%s_changelist' % (self.opts.app_label, self.opts.model_name)))
 
     def send_mail_to(self, request, queryset):
         member_pks = [m.pk for m in queryset]
@@ -297,7 +248,7 @@ class MemberAdmin(admin.ModelAdmin):
 
 class MemberUnconfirmedAdmin(admin.ModelAdmin):
     fields = ['prename', 'lastname', 'email', 'email_parents', 'cc_email_parents', 'street', 'plz',
-              'town', 'phone_number', 'phone_number_parents', 'birth_date', 'group',
+              'town', 'phone_number_mobile', 'phone_number_private','phone_number_parents', 'birth_date', 'group',
               'registered', 'registration_form', 'active', 'comments']
     list_display = ('name', 'birth_date', 'age', 'get_group', 'confirmed_mail', 'confirmed_mail_parents')
     search_fields = ('prename', 'lastname', 'email')
@@ -380,7 +331,7 @@ class WaiterInviteForm(forms.Form):
                                    label=_('Group'))
 
 
-class MemberWaitingListAdmin(admin.ModelAdmin):
+class MemberWaitingListAdmin(CommonAdminMixin, admin.ModelAdmin):
     fields = ['prename', 'lastname', 'email', 'email_parents', 'birth_date',  'comments', 'invited_for_group']
     list_display = ('name', 'birth_date', 'age', 'confirmed_mail', 'confirmed_mail_parents',
                     'waiting_confirmed')
@@ -501,7 +452,7 @@ class GroupAdminForm(forms.ModelForm):
             self.fields['leiters'].queryset = Member.objects.filter(group__name='Jugendleiter')
 
 
-class GroupAdmin(admin.ModelAdmin):
+class GroupAdmin(CommonAdminMixin, admin.ModelAdmin):
     fields = ['name', 'year_from', 'year_to', 'leiters']
     form = GroupAdminForm
     list_display = ('name', 'year_from', 'year_to')
@@ -529,13 +480,13 @@ class FreizeitAdminForm(forms.ModelForm):
 
     def __init__(self, *args, **kwargs):
         super(FreizeitAdminForm, self).__init__(*args, **kwargs)
+        if 'jugendleiter' in self.fields:
             q = self.fields['jugendleiter'].queryset
             self.fields['jugendleiter'].queryset = q.filter(group__name='Jugendleiter')
-        #self.fields['add_member'].queryset = Member.objects.filter(prename__startswith='F')
 
 
-class BillOnStatementInline(FilteredMemberFieldMixin, admin.TabularInline):
+class BillOnExcursionInline(FilteredMemberFieldMixin, CommonAdminInlineMixin, admin.TabularInline):
-    model = Bill
+    model = BillOnExcursionProxy
     extra = 0
     sortable_options = []
     fields = ['short_description', 'explanation', 'amount', 'paid_by', 'proof']
@@ -543,31 +494,16 @@ class BillOnStatementInline(FilteredMemberFieldMixin, admin.TabularInline):
         TextField: {'widget': Textarea(attrs={'rows': 1, 'cols': 40})}
     }
 
-    def get_readonly_fields(self, request, obj=None):
-        if obj is not None and obj.submitted:
-            return self.fields
-        return super(BillOnStatementInline, self).get_readonly_fields(request, obj)
-
 
-class StatementOnListInline(nested_admin.NestedStackedInline):
+class StatementOnListInline(CommonAdminInlineMixin, nested_admin.NestedStackedInline):
     model = Statement
     extra = 1
     sortable_options = []
     fields = ['night_cost']
-    inlines = [BillOnStatementInline]
+    inlines = [BillOnExcursionInline]
 
-    def get_readonly_fields(self, request, obj=None):
-        if obj is not None and hasattr(obj, 'statement') and obj.statement.submitted:
-            return self.fields
-        return super(StatementOnListInline, self).get_readonly_fields(request, obj)
 
-    def has_delete_permission(self, request, obj=None):
+class InterventionOnLJPInline(CommonAdminInlineMixin, admin.TabularInline):
-        if obj is not None and hasattr(obj, 'statement') and obj.statement.submitted:
-            return False
-        return True
-
-
-class InterventionOnLJPInline(admin.TabularInline):
     model = Intervention
     extra = 0
     sortable_options = []
@@ -576,14 +512,14 @@ class InterventionOnLJPInline(admin.TabularInline):
     }
 
 
-class LJPOnListInline(nested_admin.NestedStackedInline):
+class LJPOnListInline(CommonAdminInlineMixin, nested_admin.NestedStackedInline):
     model = LJPProposal
     extra = 1
     sortable_options = []
     inlines = [InterventionOnLJPInline]
 
 
-class MemberOnListInline(FilteredMemberFieldMixin, GenericTabularInline):
+class MemberOnListInline(FilteredMemberFieldMixin, CommonAdminInlineMixin, GenericTabularInline):
     model = NewMemberOnList
     extra = 0
     formfield_overrides = {
@@ -669,8 +605,8 @@ class MemberNoteListAdmin(admin.ModelAdmin):
     generate_summary.short_description = "PDF Übersicht erstellen"
 
 
-class FreizeitAdmin(FilteredMemberFieldMixin, nested_admin.NestedModelAdmin):
+class FreizeitAdmin(CommonAdminMixin, nested_admin.NestedModelAdmin):
-    inlines = [MemberOnListInline, LJPOnListInline, StatementOnListInline]
+    #inlines = [MemberOnListInline, LJPOnListInline, StatementOnListInline]
     form = FreizeitAdminForm
     list_display = ['__str__', 'date']
     search_fields = ('name',)
@@ -682,6 +618,12 @@ class FreizeitAdmin(FilteredMemberFieldMixin, nested_admin.NestedModelAdmin):
     #    ForeignKey: {'widget': apply_select2(forms.Select)}
     #}
 
+    def get_inlines(self, request, obj=None):
+        if obj:
+            return [MemberOnListInline, LJPOnListInline, StatementOnListInline]
+        else:
+            return [MemberOnListInline]
+
     class Media:
         css = {'all': ('admin/css/tabular_hide_original.css',)}
 
@@ -689,23 +631,11 @@ class FreizeitAdmin(FilteredMemberFieldMixin, nested_admin.NestedModelAdmin):
         super(FreizeitAdmin, self).__init__(*args, **kwargs)
 
     def save_model(self, request, obj, form, change):
-        print("saving model")
         if not change and hasattr(request.user, 'member') and hasattr(obj, 'statement'):
-            print("setting obj statement created")
             obj.statement.created_by = request.user.member
             obj.statement.save()
         super().save_model(request, obj, form, change)
 
-    def get_queryset(self, request):
-        queryset = super().get_queryset(request)
-        if request.user.has_perm('members.may_list_all_excursions'):
-            return queryset
-
-        if not hasattr(request.user, 'member'):
-            return Member.objects.none()
-
-        return Freizeit.filter_queryset_by_permissions(request.user.member, queryset)
-
     def may_view_excursion(self, request, memberlist):
         return request.user.has_perm('members.may_view_everyone') or \
             ( hasattr(request.user, 'member') and \

jdav_web/members/migrations/0007_alter_permission_options.py

@@ -0,0 +1,25 @@
+# Generated by Django 4.0.1 on 2023-04-03 20:33
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('members', '0006_rename_permissions'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='freizeit',
+            options={'verbose_name': 'Freizeit', 'verbose_name_plural': 'Freizeiten'},
+        ),
+        migrations.AlterModelOptions(
+            name='member',
+            options={'permissions': (('may_see_qualities', 'Is allowed to see the quality overview'), ('may_set_auth_user', 'Is allowed to set auth user member connections.'), ('change_member_group', 'Can change the group field')), 'verbose_name': 'member', 'verbose_name_plural': 'members'},
+        ),
+        migrations.AlterModelOptions(
+            name='membertraining',
+            options={'verbose_name': 'Training', 'verbose_name_plural': 'Trainings'},
+        ),
+    ]

jdav_web/members/migrations/0008_change_default_permissions.py

@@ -0,0 +1,38 @@
+# Generated by Django 4.0.1 on 2023-04-03 21:20
+
+from django.db import migrations
+import django.db.migrations.operations.special
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('members', '0007_alter_permission_options'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='member',
+            options={'default_permissions': ('add_global', 'change_global', 'delete_global', 'view_global'), 'permissions': (('may_see_qualities', 'Is allowed to see the quality overview'), ('may_set_auth_user', 'Is allowed to set auth user member connections.'), ('change_member_group', 'Can change the group field')), 'verbose_name': 'member', 'verbose_name_plural': 'members'},
+        ),
+        migrations.AlterModelOptions(
+            name='freizeit',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global'), 'verbose_name': 'Freizeit', 'verbose_name_plural': 'Freizeiten'},
+        ),
+        migrations.AlterModelOptions(
+            name='ljpproposal',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global'), 'verbose_name': 'LJP Proposal', 'verbose_name_plural': 'LJP Proposals'},
+        ),
+        migrations.AlterModelOptions(
+            name='membertraining',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global'), 'verbose_name': 'Training', 'verbose_name_plural': 'Trainings'},
+        ),
+        migrations.AlterModelOptions(
+            name='newmemberonlist',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global'), 'verbose_name': 'Member', 'verbose_name_plural': 'Members'},
+        ),
+        migrations.AlterModelOptions(
+            name='member',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global'), 'permissions': (('may_see_qualities', 'Is allowed to see the quality overview'), ('may_set_auth_user', 'Is allowed to set auth user member connections.'), ('change_member_group', 'Can change the group field')), 'verbose_name': 'member', 'verbose_name_plural': 'members'},
+        ),
+    ]

jdav_web/members/migrations/0009_alter_freizeit_options_alter_ljpproposal_options_and_more.py

@@ -0,0 +1,37 @@
+# Generated by Django 4.0.1 on 2023-04-04 12:20
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('members', '0008_change_default_permissions'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='freizeit',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'verbose_name': 'Freizeit', 'verbose_name_plural': 'Freizeiten'},
+        ),
+        migrations.AlterModelOptions(
+            name='ljpproposal',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'verbose_name': 'LJP Proposal', 'verbose_name_plural': 'LJP Proposals'},
+        ),
+        migrations.AlterModelOptions(
+            name='member',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'permissions': (('may_see_qualities', 'Is allowed to see the quality overview'), ('may_set_auth_user', 'Is allowed to set auth user member connections.'), ('change_member_group', 'Can change the group field')), 'verbose_name': 'member', 'verbose_name_plural': 'members'},
+        ),
+        migrations.AlterModelOptions(
+            name='membertraining',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'verbose_name': 'Training', 'verbose_name_plural': 'Trainings'},
+        ),
+        migrations.AlterModelOptions(
+            name='memberwaitinglist',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'permissions': (('may_manage_waiting_list', 'Can view and manage the waiting list.'),), 'verbose_name': 'Waiter', 'verbose_name_plural': 'Waiters'},
+        ),
+        migrations.AlterModelOptions(
+            name='newmemberonlist',
+            options={'default_permissions': ('add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view'), 'verbose_name': 'Member', 'verbose_name_plural': 'Members'},
+        ),
+    ]

jdav_web/members/models.py

@@ -18,8 +18,12 @@ from django.contrib.auth.models import User
 from django.conf import settings
 from django.core.validators import MinValueValidator
 
-from dateutil.relativedelta import relativedelta
+from .rules import may_view, may_change, may_delete, is_own_training, is_oneself, is_leader, is_leader_of_excursion
+import rules
+from contrib.models import CommonModel
+from contrib.rules import memberize_user, has_global_perm
 
+from dateutil.relativedelta import relativedelta
 
 def generate_random_key():
     return uuid.uuid4().hex
@@ -29,6 +33,7 @@ GEMEINSCHAFTS_TOUR = MUSKELKRAFT_ANREISE = 0
 FUEHRUNGS_TOUR = OEFFENTLICHE_ANREISE = 1
 AUSBILDUNGS_TOUR = FAHRGEMEINSCHAFT_ANREISE = 2
 
+
 class ActivityCategory(models.Model):
     """
     Describes one kind of activity
@@ -69,7 +74,7 @@ class MemberManager(models.Manager):
         return super().get_queryset().filter(confirmed=True)
 
 
-class Person(models.Model):
+class Person(CommonModel):
     """
     Represents an abstract person. Not necessarily a member of any group.
     """
@@ -89,7 +94,7 @@ class Person(models.Model):
     confirm_mail_key = models.CharField(max_length=32, default="")
     confirm_mail_parents_key = models.CharField(max_length=32, default="")
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         abstract = True
 
     def __str__(self):
@@ -123,7 +128,7 @@ class Person(models.Model):
             self.confirmed_mail_parents = False
             self.confirm_mail_parents_key = uuid.uuid4().hex
             send_mail(_('Email confirmation needed'),
-                      CONFIRM_MAIL_TEXT.format(name=self.prename,
+                      settings.CONFIRM_MAIL_TEXT.format(name=self.prename,
                                                         link=get_mail_confirmation_link(self.confirm_mail_parents_key),
                                                         whattoconfirm='der Emailadresse deiner Eltern'),
                       settings.DEFAULT_SENDING_MAIL,
@@ -293,11 +298,21 @@ class Member(Person):
         return groupstring
     get_group.short_description = _('Group')
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         verbose_name = _('member')
         verbose_name_plural = _('members')
-        permissions = (('may_see_qualities', 'Is allowed to see the quality overview'),
+        permissions = (
-                       ('may_set_auth_user', 'Is allowed to set auth user member connections.'))
+            ('may_see_qualities', 'Is allowed to see the quality overview'),
+            ('may_set_auth_user', 'Is allowed to set auth user member connections.'),
+            ('change_member_group', 'Can change the group field'),
+        )
+        rules_permissions = {
+            'members': rules.always_allow,
+            'add_obj': has_global_perm('members.add_global_member'),
+            'view_obj': may_view | has_global_perm('members.view_global_member'),
+            'change_obj': may_change | has_global_perm('members.change_global_member'),
+            'delete_obj': may_delete | has_global_perm('members.delete_global_member'),
+        }
 
     def get_skills(self):
         # get skills by summing up all the activities taken part in
@@ -333,13 +348,51 @@ class Member(Person):
                       settings.DEFAULT_SENDING_MAIL,
                       jl.email)
 
-    def filter_queryset_by_permissions(self, queryset=None, annotate=False):
+    def filter_queryset_by_permissions(self, queryset=None, annotate=False, model=None):
+        name = model._meta.object_name
         if queryset is None:
             queryset = Member.objects.all()
 
-        # every member may list themself
+        if name == "Message":
+            return self.filter_messages_by_permissions(queryset, annotate)
+        elif name == "Member":
+            return self.filter_members_by_permissions(queryset, annotate)
+        elif name == "StatementUnSubmitted":
+            return self.filter_statements_by_permissions(queryset, annotate)
+        elif name == "Freizeit":
+            return self.filter_excursions_by_permissions(queryset, annotate)
+        elif name == "LJPProposal":
+            return queryset
+        elif name == "MemberTraining":
+            return queryset
+        elif name == "NewMemberOnList":
+            return queryset
+        elif name == "Statement":
+            return queryset
+        elif name == "BillOnExcursionProxy":
+            return queryset
+        elif name == "Intervention":
+            return queryset
+        elif name == "BillOnStatementProxy":
+            return queryset
+        elif name == "Attachment":
+            return queryset
+        elif name == "Group":
+            return queryset
+        else:
+            raise ValueError(name)
+
+    def filter_members_by_permissions(self, queryset, annotate=False):
+        #mems = Member.objects.all().prefetch_related('group')
+
+        #list_pks = [ m.pk for m in mems if self.may_list(m) ]
+        #view_pks = [ m.pk for m in mems if self.may_view(m) ]
+
+        ## every member may list themself
         pks = [self.pk]
         view_pks = [self.pk]
+
+
         if hasattr(self, 'permissions'):
             pks += [ m.pk for m in self.permissions.list_members.all() ]
             view_pks += [ m.pk for m in self.permissions.view_members.all() ]
@@ -367,6 +420,21 @@ class Member(Person):
 
         return filtered.annotate(_viewable=Case(When(pk__in=view_pks, then=Value(True)), default=Value(False), output_field=models.BooleanField()))
 
+    def filter_messages_by_permissions(self, queryset, annotate=False):
+        # ignores annotate
+        return queryset.filter(created_by=self)
+
+    def filter_statements_by_permissions(self, queryset, annotate=False):
+        # ignores annotate
+        return queryset.filter(Q(created_by=self) | Q(excursion__jugendleiter=self))
+
+    def filter_excursions_by_permissions(self, queryset, annotate=False):
+        # ignores annotate
+        groups = self.leited_groups.all()
+        # one may view all excursions by leited groups and leited excursions
+        queryset = queryset.filter(Q(groups__in=groups) | Q(jugendleiter=self)).distinct()
+        return queryset
+
     def may_list(self, other):
         if self.pk == other.pk:
             return True
@@ -493,10 +561,16 @@ class MemberWaitingList(Person):
                                           default=None,
                                           verbose_name=_('Invited for group'),
                                           on_delete=models.SET_NULL) 
-    class Meta:
+    class Meta(CommonModel.Meta):
         verbose_name = _('Waiter')
         verbose_name_plural = _('Waiters')
         permissions = (('may_manage_waiting_list', 'Can view and manage the waiting list.'),)
+        rules_permissions = {
+            'add_obj': has_global_perm('members.add_global_memberwaitinglist'),
+            'view_obj': has_global_perm('members.view_global_memberwaitinglist'),
+            'change_obj': has_global_perm('members.change_global_memberwaitinglist'),
+            'delete_obj': has_global_perm('members.delete_global_memberwaitinglist'),
+        }
 
     @property
     def waiting_confirmation_needed(self):
@@ -565,7 +639,7 @@ class MemberWaitingList(Person):
                   else self.email)
 
 
-class NewMemberOnList(models.Model):
+class NewMemberOnList(CommonModel):
     """
     Connects members to a list of members.
     """
@@ -579,9 +653,15 @@ class NewMemberOnList(models.Model):
     def __str__(self):
         return str(self.member)
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         verbose_name = _('Member')
         verbose_name_plural = _('Members')
+        rules_permissions = {
+            'add_obj': is_leader,
+            'view_obj': is_leader | has_global_perm('members.view_global_freizeit'),
+            'change_obj': is_leader,
+            'delete_obj': is_leader,
+        }
 
     @property
     def comments_tex(self):
@@ -604,7 +684,7 @@ class NewMemberOnList(models.Model):
         return ", ".join(qualities)
 
 
-class Freizeit(models.Model):
+class Freizeit(CommonModel):
     """Lets the user create a 'Freizeit' and generate a members overview in pdf format. """
 
     name = models.CharField(verbose_name=_('Activity'), default='',
@@ -641,9 +721,15 @@ class Freizeit(models.Model):
         """String represenation"""
         return self.name
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         verbose_name = "Freizeit"
         verbose_name_plural = "Freizeiten"
+        rules_permissions = {
+            'add_obj': has_global_perm('members.add_global_freizeit'),
+            'view_obj': is_leader | has_global_perm('members.view_global_freizeit'),
+            'change_obj': is_leader | has_global_perm('members.change_global_freizeit'),
+            'delete_obj': is_leader | has_global_perm('members.delete_global_freizeit'),
+        }
 
     def get_tour_type(self):
         if self.tour_type == FUEHRUNGS_TOUR:
@@ -827,7 +913,7 @@ class RegistrationPassword(models.Model):
         verbose_name_plural = _('registration passwords')
 
 
-class LJPProposal(models.Model):
+class LJPProposal(CommonModel):
     """A proposal for LJP"""
     title = models.CharField(verbose_name=_('Title'), max_length=30)
 
@@ -843,14 +929,20 @@ class LJPProposal(models.Model):
                                      null=True,
                                      on_delete=models.SET_NULL)
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         verbose_name = _('LJP Proposal')
         verbose_name_plural = _('LJP Proposals')
+        rules_permissions = {
+            'add_obj': is_leader,
+            'view_obj': is_leader | has_global_perm('members.view_global_freizeit'),
+            'change_obj': is_leader,
+            'delete_obj': is_leader,
+        }
 
     def __str__(self):
         return self.title
 
-class Intervention(models.Model):
+class Intervention(CommonModel):
     """An intervention during a seminar as part of a LJP proposal"""
     date_start = models.DateTimeField(verbose_name=_('Starting time'))
     duration = models.DecimalField(verbose_name=_('Duration in hours'),
@@ -866,6 +958,12 @@ class Intervention(models.Model):
     class Meta:
         verbose_name = _('Intervention')
         verbose_name_plural = _('Interventions')
+        rules_permissions = {
+            'add_obj': is_leader_of_excursion,
+            'view_obj': is_leader_of_excursion | has_global_perm('members.view_global_freizeit'),
+            'change_obj': is_leader_of_excursion,
+            'delete_obj': is_leader_of_excursion,
+        }
 
 
 def annotate_activity_score(queryset):
@@ -1030,7 +1128,7 @@ class TrainingCategory(models.Model):
         return self.name
 
 
-class MemberTraining(models.Model):
+class MemberTraining(CommonModel):
     """Represents a training planned or attended by a member."""
     member = models.ForeignKey(Member, on_delete=models.CASCADE, related_name='traininigs')
     title = models.CharField(verbose_name=_('Title'), max_length=30)
@@ -1040,9 +1138,17 @@ class MemberTraining(models.Model):
     participated = models.BooleanField(verbose_name=_('Participated'))
     passed = models.BooleanField(verbose_name=_('Passed'))
 
-    class Meta:
+    class Meta(CommonModel.Meta):
         verbose_name = _('Training')
         verbose_name_plural = _('Trainings')
+        rules_permissions = {
+            # sine this is used in an inline, the member and not the training is passed
+            'add_obj': is_oneself | has_global_perm('members.add_global_membertraining'),
+            'view_obj': is_oneself | has_global_perm('members.view_global_membertraining'),
+            'change_obj': is_oneself | has_global_perm('members.change_global_membertraining'),
+            'delete_obj': is_oneself | has_global_perm('members.delete_global_membertraining'),
+        }
+
 
 
 def import_from_csv(path):
@@ -1179,3 +1285,4 @@ CLUBDESK_TO_KOMPASS = {
     'Erziehungsberechtigte': 'legal_guardians',
     'Mobil Eltern': 'phone_number_parents',
 }
+

jdav_web/members/rules.py

@@ -0,0 +1,75 @@
+from contrib.rules import memberize_user
+from rules import predicate
+
+
+@predicate
+@memberize_user
+def is_oneself(self, other):
+    assert other is not None
+    return self.pk == other.pk
+
+
+@predicate
+@memberize_user
+def may_view(self, other):
+    assert other is not None
+    return self.may_view(other)
+
+
+@predicate
+@memberize_user
+def may_change(self, other):
+    assert other is not None
+    return self.may_change(other)
+
+
+@predicate
+@memberize_user
+def may_delete(self, other):
+    assert other is not None
+    return self.may_delete(other)
+
+
+@predicate
+@memberize_user
+def is_own_training(self, training):
+    assert training is not None
+    return training.member == self
+
+
+@predicate
+@memberize_user
+def is_leader_of_excursion(self, ljpproposal):
+    assert ljpproposal is not None
+    if not hasattr(ljpproposal, 'excursion'):
+        return _is_leader(self, ljpproposal)
+    return _is_leader(self, ljpproposal.excursion)
+
+
+@predicate
+@memberize_user
+def is_leader(self, excursion):
+    assert excursion is not None
+    return _is_leader(self, excursion)
+
+
+def _is_leader(member, excursion):
+    if not hasattr(member, 'pk'):
+        return False
+    if member.pk is None:
+        return False
+    if member in excursion.jugendleiter.all():
+        return True
+    yl = [ yl for group in member.group.all() for yl in group.leiters.all() ]
+    return member in yl
+
+
+@predicate
+@memberize_user
+def statement_not_submitted(self, excursion):
+    assert excursion is not None
+    if not hasattr(excursion, 'statement'):
+        return False
+    if excursion.statement is None:
+        return False
+    return not excursion.statement.submitted