basic klettertreff view structure

jdav_web/members/admin.py

@@ -13,6 +13,7 @@ from django.contrib.admin import DateFieldListFilter
 from django.utils.translation import ugettext_lazy as translate
 from django.db.models import TextField
 from django.forms import Textarea
+from django.shortcuts import render
 
 from .models import (Member, Group, MemberList, MemberOnList, Klettertreff,
         KlettertreffAttendee)
@@ -145,6 +146,18 @@ class KlettertreffAdmin(admin.ModelAdmin):
     inlines = [KlettertreffAttendeeInline]
     list_display = ['__str__', 'date', 'get_jugendleiter']
     list_filter = [('date', DateFieldListFilter)]
+    actions = ['overview']
+
+    def overview(self, request, queryset):
+        context = {
+                   'klettertreffs': queryset,
+                   'members': Member.objects.all(),
+                   'attendees': KlettertreffAttendee.objects.all()
+                   }
+
+        return render(request, 'admin/klettertreff_overview.html',
+                      context)
+
 
 admin.site.register(Member, MemberAdmin)
 admin.site.register(Group, GroupAdmin)

jdav_web/members/models.py

@@ -120,8 +120,18 @@ class Klettertreff(models.Model):
         jl_string = jl_string[:-2]
         return jl_string
 
+    def has_attendee(self, member):
+        attendees = KlettertreffAttendee.objects.filter(
+                member__id__contains=member.id,
+                klettertreff__id__contains=self.id)
+        if attendees:
+            return True
+        return False
+
+
     get_jugendleiter.short_description = _('Jugendleiter')
 
+
 class KlettertreffAttendee(models.Model):
     """Connects members to Klettertreffs."""
     member = models.ForeignKey(Member)

jdav_web/members/templates/admin/klettertreff_overview.html

@@ -0,0 +1,36 @@
+{% extends "admin/base_site.html" %}
+{% load i18n %}
+{% load static %}
+{% load overview_extras %}
+
+{% block content %}
+<table>
+    <tr>
+        <th>Datum</th>
+        {% for klettertreff in klettertreffs %}
+        <td>{{ klettertreff.date }}</td>
+        {% endfor %}
+    </tr>
+    <tr>
+        <th>Ort</th>
+        {% for klettertreff in klettertreffs %}
+        <td>{{ klettertreff.location }}</td>
+        {% endfor %}
+    </tr>
+    {% for member in members %}
+    <tr>
+        <th>{{ member.name }}
+        {% for klettertreff in klettertreffs %}
+        <td>
+            {% has_attendee_wrapper klettertreff member as test %}
+            {% if test %}
+                yes
+            {% else %}
+                no
+            {% endif %}
+        </td>
+        {% endfor %}
+    </tr>
+    {% endfor %}
+</table>
+{% endblock %}

jdav_web/members/templatetags/overview_extras.py

@@ -0,0 +1,7 @@
+from django import template
+
+register = template.Library()
+
+@register.assignment_tag
+def has_attendee_wrapper(klettertreff, member):
+    return klettertreff.has_attendee(member)