Very basic quota control

src/tixlbase/migrations/0018_auto_20141025_0908.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tixlbase', '0017_auto_20141017_2148'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='quota',
+            name='event',
+            field=models.ForeignKey(to='tixlbase.Event', default=1, verbose_name='Event', related_name='quotas'),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='cartposition',
+            name='datetime',
+            field=models.DateTimeField(verbose_name='Date'),
+        ),
+    ]

src/tixlbase/models.py

@@ -750,6 +750,12 @@ class Quota(models.Model):
     implementation specific and are considered private. It is planned that they
     are being used as a fallback solution if redis is not available.
     """
+    event = models.ForeignKey(
+        Event,
+        on_delete=models.CASCADE,
+        related_name="quotas",
+        verbose_name=_("Event"),
+    )
     name = models.CharField(
         max_length=200,
         verbose_name=_("Name")
@@ -780,6 +786,9 @@ class Quota(models.Model):
         verbose_name = _("Quota")
         verbose_name_plural = _("Quotas")
 
+    def __str__(self):
+        return self.name
+
 
 class Order(models.Model):
     """

src/tixlcontrol/templates/tixlcontrol/items/base.html

@@ -7,6 +7,7 @@
 		<li {% if "event.items.categories" in url_name %}class="active"{% endif %}><a href="{% url 'control:event.items.categories' organizer=request.event.organizer.slug event=request.event.slug %}">{% trans "Categories" %}</a></li>
 		<li {% if "event.items.properties" in url_name %}class="active"{% endif %}><a href="{% url 'control:event.items.properties' organizer=request.event.organizer.slug event=request.event.slug %}">{% trans "Properties" %}</a></li>
 		<li {% if "event.items.questions" in url_name %}class="active"{% endif %}><a href="{% url 'control:event.items.questions' organizer=request.event.organizer.slug event=request.event.slug %}">{% trans "Questions" %}</a></li>
+		<li {% if "event.items.quotas" in url_name %}class="active"{% endif %}><a href="{% url 'control:event.items.quotas' organizer=request.event.organizer.slug event=request.event.slug %}">{% trans "Quotas" %}</a></li>
 	</ul>
 	{% block inside %}
 	{% endblock %}

src/tixlcontrol/templates/tixlcontrol/items/question_delete.html

@@ -18,7 +18,7 @@
 				<button type="submit" class="btn btn-primary">
 					{% trans "Confirm" %}
 				</button>
-				<a href="{% url "control:event.items.properties" organizer=request.event.organizer.slug event=request.event.slug %}" class="btn btn-default">
+				<a href="{% url "control:event.items.questions" organizer=request.event.organizer.slug event=request.event.slug %}" class="btn btn-default">
 					{% trans "Cancel" %}
 				</a>
 			</div>

src/tixlcontrol/templates/tixlcontrol/items/quota.html

@@ -0,0 +1,27 @@
+{% extends "tixlcontrol/items/base.html" %}
+{% load i18n %}
+{% load bootstrap3 %}
+{% block title %}{% trans "Quota" %}{% endblock %}
+{% block inside %}
+	<h1>{% trans "Quota" %}</h1>
+	<form action="" method="post" class="form-horizontal">
+		{% csrf_token %}
+		{% if "success" in request.GET %}
+			<div class="alert alert-success">
+				{% trans "Your changes have been saved." %}
+			</div>
+		{% endif %}
+		<fieldset>
+			<legend>{% trans "General information" %}</legend>
+			{% bootstrap_field form.name layout="horizontal" %}
+			{% bootstrap_field form.size layout="horizontal" %}
+		</fieldset>
+		<div class="form-group">
+			<div class="col-sm-offset-2 col-sm-10">
+				<button type="submit" class="btn btn-primary">
+					{% trans "Save" %}
+				</button>
+			</div>
+		</div>
+	</form>
+{% endblock %}

src/tixlcontrol/templates/tixlcontrol/items/quota_delete.html

@@ -0,0 +1,27 @@
+{% extends "tixlcontrol/items/base.html" %}
+{% load i18n %}
+{% load bootstrap3 %}
+{% block title %}{% trans "Delete quota" %}{% endblock %}
+{% block inside %}
+	<h1>{% trans "Delete quota" %}</h1>
+	<form action="" method="post" class="form-horizontal">
+		{% csrf_token %}
+		<p>{% blocktrans %}Are you sure you want to delete the quota <strong>{{ quota }}</strong>?{% endblocktrans %}</p>
+		{% if dependent|length > 0 %}
+			<p>{% blocktrans %}The following items might be no longer available for sale:{% endblocktrans %}</p>
+			{% for item in dependent %}
+				<li><a href="{% url "control:event.item" organizer=request.event.organizer.slug event=request.event.slug item=item.pk %}">{{ item.name }}</a></li>
+			{% endfor %}
+		{% endif %}
+		<div class="form-group">
+			<div class="col-sm-offset-2 col-sm-10">
+				<button type="submit" class="btn btn-primary">
+					{% trans "Confirm" %}
+				</button>
+				<a href="{% url "control:event.items.quotas" organizer=request.event.organizer.slug event=request.event.slug %}" class="btn btn-default">
+					{% trans "Cancel" %}
+				</a>
+			</div>
+		</div>
+	</form>
+{% endblock %}

src/tixlcontrol/templates/tixlcontrol/items/quotas.html

@@ -0,0 +1,44 @@
+{% extends "tixlcontrol/items/base.html" %}
+{% load i18n %}
+{% block title %}{% trans "Quotas" %}{% endblock %}
+{% block inside %}
+	<h1>{% trans "Quotas" %}</h1>
+	{% if "updated" in request.GET %}
+		<div class="alert alert-success">
+			{% trans "Your changes have been saved." %}
+		</div>
+	{% elif "created" in request.GET %}
+		<div class="alert alert-success">
+			{% trans "A new quota has been created." %}
+		</div>
+	{% elif "deleted" in request.GET %}
+		<div class="alert alert-success">
+			{% trans "The quota has been deleted." %}
+		</div>
+	{% endif %}
+	<p>
+		<a href="{% url "control:event.items.quotas.add" organizer=request.event.organizer.slug event=request.event.slug %}" class="btn btn-default"><i class="fa fa-plus"></i> {% trans "Create a new quota" %}</a>
+	</p>
+	<table class="table table-hover">
+		<thead>
+			<tr>
+				<th>{% trans "Quota name" %}</th>
+				<th>{% trans "Items" %}</th>
+				<th>{% trans "Total capacity" %}</th>
+				<th>{% trans "Capacity left" %}</th>
+				<th></th>
+			</tr>
+		</thead>
+		<tbody>
+			{% for q in quotas %}
+			<tr>
+				<td><strong><a href="{% url "control:event.items.quotas.edit" organizer=request.event.organizer.slug event=request.event.slug quota=q.pk %}">{{ q.name }}</a></strong></td>
+				<td></td>
+				<td>{{ q.size }}</td>
+                <td></td>
+				<td class="text-right"><a href="{% url "control:event.items.quotas.delete" organizer=request.event.organizer.slug event=request.event.slug quota=q.pk %}" class="btn btn-danger btn-sm"><i class="fa fa-trash"></i></a></td>
+			</tr>
+			{% endfor %}
+		</tbody>
+	</table>
+{% endblock %}

src/tixlcontrol/urls.py

@@ -38,6 +38,11 @@ urlpatterns += patterns(
             url(r'^properties/(?P<property>\d+)/$', item.PropertyUpdate.as_view(), name='event.items.properties.edit'),
             url(r'^properties/(?P<property>\d+)/delete$', item.PropertyDelete.as_view(), name='event.items.properties.delete'),
             url(r'^properties/add$', item.PropertyCreate.as_view(), name='event.items.properties.add'),
+            url(r'^quotas/$', item.QuotaList.as_view(), name='event.items.quotas'),
+            url(r'^quotas/(?P<quota>\d+)/$', item.QuotaUpdate.as_view(), name='event.items.quotas.edit'),
+            url(r'^quotas/(?P<quota>\d+)/delete$', item.QuotaDelete.as_view(),
+                name='event.items.quotas.delete'),
+            url(r'^quotas/add$', item.QuotaCreate.as_view(), name='event.items.quotas.add'),
         )
         ))
 )

src/tixlcontrol/views/item.py

@@ -10,7 +10,9 @@ from django import forms
 from django.shortcuts import redirect
 from django.forms.models import inlineformset_factory
 
-from tixlbase.models import Item, ItemCategory, Property, ItemVariation, PropertyValue, Question
+from tixlbase.models import (
+    Item, ItemCategory, Property, ItemVariation, PropertyValue, Question, Quota
+)
 from tixlcontrol.permissions import EventPermissionRequiredMixin, event_permission_required
 from tixlcontrol.views.forms import TolerantFormsetModelForm
 from tixlcontrol.signals import restriction_formset
@@ -406,6 +408,97 @@ class QuestionCreate(EventPermissionRequiredMixin, CreateView):
         return super().form_valid(form)
 
 
+class QuotaList(ListView):
+    model = Quota
+    context_object_name = 'quotas'
+    template_name = 'tixlcontrol/items/quotas.html'
+
+    def get_queryset(self):
+        return Quota.objects.filter(
+            event=self.request.event
+        )
+
+
+class QuotaForm(forms.ModelForm):
+
+    class Meta:
+        model = Quota
+        localized_fields = '__all__'
+        fields = [
+            'name',
+            'size',
+        ]
+
+
+class QuotaCreate(EventPermissionRequiredMixin, CreateView):
+    model = Quota
+    form_class = QuotaForm
+    template_name = 'tixlcontrol/items/quota.html'
+    permission = 'can_change_items'
+    context_object_name = 'quota'
+
+    def get_success_url(self):
+        return reverse('control:event.items.quotas', kwargs={
+            'organizer': self.request.event.organizer.slug,
+            'event': self.request.event.slug,
+        }) + '?created=true'
+
+    def form_valid(self, form):
+        form.instance.event = self.request.event
+        return super().form_valid(form)
+
+
+class QuotaUpdate(EventPermissionRequiredMixin, UpdateView):
+    model = Quota
+    form_class = QuotaForm
+    template_name = 'tixlcontrol/items/quota.html'
+    permission = 'can_change_items'
+    context_object_name = 'quota'
+
+    def get_object(self, queryset=None):
+        url = resolve(self.request.path_info)
+        return self.request.event.quotas.get(
+            id=url.kwargs['quota']
+        )
+
+    def get_success_url(self):
+        return reverse('control:event.items.quotas', kwargs={
+            'organizer': self.request.event.organizer.slug,
+            'event': self.request.event.slug,
+        }) + '?updated=true'
+
+
+class QuotaDelete(EventPermissionRequiredMixin, DeleteView):
+    model = Quota
+    template_name = 'tixlcontrol/items/quota_delete.html'
+    permission = 'can_change_items'
+    context_object_name = 'quota'
+
+    def get_object(self, queryset=None):
+        url = resolve(self.request.path_info)
+        return self.request.event.quotas.get(
+            id=url.kwargs['quota']
+        )
+
+    def get_context_data(self, *args, **kwargs):
+        context = super().get_context_data(*args, **kwargs)
+        context['dependent'] = list(self.get_object().items.all())
+        return context
+
+    def delete(self, request, *args, **kwargs):
+        self.object = self.get_object()
+        self.object.items.update(category=None)
+        success_url = self.get_success_url()
+        self.object.delete()
+        return HttpResponseRedirect(success_url)
+
+    def get_success_url(self):
+        return reverse('control:event.items.quotas', kwargs={
+            'organizer': self.request.event.organizer.slug,
+            'event': self.request.event.slug,
+        }) + '?deleted=true'
+
+
 class ItemDetailMixin(SingleObjectMixin):
     model = Item
     context_object_name = 'item'