members/excursion: select invoice for sjr application form (#103)

Closes #61

Adds to the generate sjr application process a form in order to select one invoice.

Reviewed-on: #103
Co-authored-by: marius.klein <marius.klein@alpenverein-heidelberg.de>
Co-committed-by: marius.klein <marius.klein@alpenverein-heidelberg.de>

jdav_web/members/admin.py

@@ -981,6 +981,15 @@ class GenerateSeminarReportForm(forms.Form):
                                      widget=CheckboxInput(attrs={'style': 'display: inherit'}),
                                      required=False)
 
+class GenerateSjrForm(forms.Form):
+    
+    def __init__(self, *args, **kwargs):
+        self.attachments = kwargs.pop('attachments')
+        
+        super(GenerateSjrForm,self).__init__(*args,**kwargs)
+        self.fields['invoice'] = forms.ChoiceField(choices=self.attachments, label=_('Invoice'))
+        
+
 
 class FreizeitAdmin(CommonAdminMixin, nested_admin.NestedModelAdmin):
     #inlines = [MemberOnListInline, LJPOnListInline, StatementOnListInline]
@@ -1078,16 +1087,40 @@ class FreizeitAdmin(CommonAdminMixin, nested_admin.NestedModelAdmin):
         return self.render_seminar_report_options(request, memberlist, GenerateSeminarReportForm())
     seminar_report.short_description = _('Generate seminar report')
     
+    def render_sjr_options(self, request, memberlist, form):
+        context = dict(self.admin_site.each_context(request),
+            title=_('Generate SJR application'),
+            opts=self.opts,
+            memberlist=memberlist,
+            form=form,
+            object=memberlist)
+        return render(request, 'admin/generate_sjr_application.html', context=context)
+    
     def sjr_application(self, request, memberlist):
+        if hasattr(memberlist, 'statement'):
+            attachment_names = [f"{b.short_description}: {b.explanation} ({b.amount:.2f}€)" for b in memberlist.statement.bill_set.all() if b.proof]
+            attachment_paths = [b.proof.path for b in memberlist.statement.bill_set.all() if b.proof]
+        else:
+            attachment_names = []
+            attachment_paths = []
+        attachments = zip(attachment_paths, attachment_names)
+            
         if not self.may_view_excursion(request, memberlist):
             return self.not_allowed_view(request, memberlist)
+        if "apply" in request.POST:
+            form = GenerateSjrForm(request.POST, attachments=attachments)
+            if not form.is_valid():
+                messages.error(request, _('Please select an invoice.'))
+                return self.render_sjr_options(request, memberlist, form)
+            
+            selected_attachments = [form.cleaned_data['invoice']]
             context = memberlist.sjr_application_fields()
-        if hasattr(memberlist, 'statement'):
-            attachments = [b.proof.path for b in memberlist.statement.bill_set.all() if b.proof]
-        else:
-            attachments = []
             title = memberlist.ljpproposal.title if hasattr(memberlist, 'ljpproposal') else memberlist.name
-        return fill_pdf_form(title + "_SJR_Antrag", 'members/sjr_template.pdf', context, attachments)
+            
+            return fill_pdf_form(title + "_SJR_Antrag", 'members/sjr_template.pdf', context, selected_attachments)
+        
+        return self.render_sjr_options(request, memberlist, GenerateSjrForm(attachments=attachments))
+    
     sjr_application.short_description = _('Generate SJR application')
 
     def finance_overview(self, request, memberlist):

jdav_web/members/locale/de/LC_MESSAGES/django.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-01-18 23:22+0100\n"
+"POT-Creation-Date: 2025-01-19 10:08+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -341,6 +341,10 @@ msgstr "Modus"
 msgid "Prepend V32"
 msgstr "V32 Formblatt einfügen"
 
+#: members/admin.py
+msgid "Invoice"
+msgstr "Beleg"
+
 #: members/admin.py
 msgid ""
 "General information on your excursion. These are partly relevant for the "
@@ -380,10 +384,14 @@ msgstr ""
 "Der vollständiger Modus ist nur verfügbar, wenn der Seminarbericht "
 "ausgefüllt ist. "
 
-#: members/admin.py
+#: members/admin.py members/templates/admin/generate_sjr_application.html
 msgid "Generate SJR application"
 msgstr "SJR Antrag erstellen"
 
+#: members/admin.py
+msgid "Please select an invoice."
+msgstr "Bitte wähle einen Beleg aus."
+
 #: members/admin.py
 msgid "No statement found. Please add a statement and then retry."
 msgstr ""
@@ -1021,6 +1029,7 @@ msgstr "Fortbildungen"
 #: members/templates/admin/demote_to_waiter.html
 #: members/templates/admin/freizeit_finance_overview.html
 #: members/templates/admin/generate_seminar_report.html
+#: members/templates/admin/generate_sjr_application.html
 #: members/templates/admin/invite_as_user.html
 #: members/templates/admin/invite_for_group.html
 #: members/templates/admin/invite_for_group_text.html
@@ -1045,6 +1054,7 @@ msgstr "Zurück auf die Warteliste setzen"
 #: members/templates/admin/demote_to_waiter.html
 #: members/templates/admin/freizeit_finance_overview.html
 #: members/templates/admin/generate_seminar_report.html
+#: members/templates/admin/generate_sjr_application.html
 #: members/templates/admin/invite_as_user.html
 #: members/templates/admin/invite_for_group.html
 #: members/templates/admin/invite_selected_as_user.html
@@ -1301,9 +1311,27 @@ msgstr ""
 "Felder im Formblatt selbst aus und unterschreibe das PDF."
 
 #: members/templates/admin/generate_seminar_report.html
+#: members/templates/admin/generate_sjr_application.html
 msgid "Generate"
 msgstr "Erstellen"
 
+#: members/templates/admin/generate_sjr_application.html
+msgid "Here you can generate an allowance application for the SJR."
+msgstr "Hier kannst du einen SJR-Zuschussantrag erstellen."
+
+#: members/templates/admin/generate_sjr_application.html
+msgid ""
+"The application needs to be complemented with an invoice from the trip as "
+"proof."
+msgstr ""
+"An den Antrag muss ein Ausgabenbeleg angehängt werden, der beweist, dass die "
+"Aktivität stattgefunden hat."
+
+#: members/templates/admin/generate_sjr_application.html
+msgid ""
+"Please send this application form to the jdav finance officer via email."
+msgstr "Bitte sende diesen Antrag an den/die JDAV-Finanzwart*in per E-Mail."
+
 #: members/templates/admin/invite_as_user.html
 #, python-format
 msgid ""

jdav_web/members/pdf.py

@@ -100,12 +100,18 @@ def fill_pdf_form(name, template_path, fields, attachments=[], save_only=False):
 
     for fp in attachments:
         try:
-            img = Image.open(fp)
+            if fp.endswith(".pdf"):
+                # append pdf directly
+                img_pdf = PdfReader(fp)
+            else:
+                # convert ensures that png files with an alpha channel can be appended
+                img = Image.open(fp).convert("RGB")
                 img_pdf = BytesIO()
                 img.save(img_pdf, "pdf")
             writer.append(img_pdf)
-        except:
+        except Exception as e:
             print("Could not add image", fp)
+            print(e)
 
     with open(media_path(filename_pdf), 'wb') as output_stream:
         writer.write(output_stream)

jdav_web/members/templates/admin/generate_sjr_application.html

@@ -0,0 +1,52 @@
+{% extends "admin/base_site.html" %}
+{% load i18n admin_urls static %}
+
+{% block extrahead %}
+    {{ block.super }}
+    {{ media }}
+    <script src="{% static 'admin/js/cancel.js' %}" async></script>
+    <script type="text/javascript" src="{% static "admin/js/vendor/jquery/jquery.js" %}"></script>
+    <script type="text/javascript" src="{% static "admin/js/jquery.init.js" %}"></script>
+{% endblock %}
+
+{% block bodyclass %}{{ block.super }} app-{{ opts.app_label }} model-{{ opts.model_name }} invite-waiter
+{% endblock %}
+
+{% block breadcrumbs %}
+<div class="breadcrumbs">
+<a href="{% url 'admin:index' %}">{% translate 'Home' %}</a>
+&rsaquo; <a href="{% url 'admin:app_list' app_label=opts.app_label %}">{{ opts.app_config.verbose_name }}</a>
+&rsaquo; <a href="{% url opts|admin_urlname:'changelist' %}">{{ opts.verbose_name_plural|capfirst }}</a>
+&rsaquo; <a href="{% url opts|admin_urlname:'change' object.pk|admin_urlquote %}">{{ object|truncatewords:"18" }}</a>
+&rsaquo; {% translate 'Generate SJR application' %}
+</div>
+{% endblock %}
+
+{% block content %}
+<p>
+{% blocktrans %}Here you can generate an allowance application for the SJR.{% endblocktrans %}
+</p>
+<p>
+{% blocktrans %}The application needs to be complemented with an invoice from the trip as proof.{% endblocktrans %}
+</p>
+
+<form action="" method="post">
+    {% csrf_token %}
+    <p>
+    <table>
+    {{ form }}
+    </table>
+    </p>
+    <p>
+        {% blocktrans %}Please send this application form to the jdav finance officer via email.{% endblocktrans %}
+        </p>
+    <br>
+    <input type="hidden" name="action" value="sjr_application">
+    <input type="hidden" name="sjr_application">
+    <input class="default" style="color: $default-link-color" type="submit" name="apply"
+        value="{% translate 'Generate' %}">
+    <a href="#" class="button cancel-link">{% translate "Cancel" %}</a>
+</form>
+
+
+{% endblock %}