Allow to hide a product unless a specific quota is sold out (#1351)

* Allow to hide a product unless a specific quota is sold out

* Fix required property

* Add API property and copy between events

src/pretix/control/forms/item.py

@@ -402,6 +402,19 @@ class ItemUpdateForm(I18nModelForm):
             widget=forms.CheckboxSelectMultiple
         )
         change_decimal_field(self.fields['default_price'], self.event.currency)
+        self.fields['hidden_if_available'].queryset = self.event.quotas.all()
+        self.fields['hidden_if_available'].widget = Select2(
+            attrs={
+                'data-model-select2': 'generic',
+                'data-select2-url': reverse('control:event.items.quotas.select2', kwargs={
+                    'event': self.event.slug,
+                    'organizer': self.event.organizer.slug,
+                }),
+                'data-placeholder': _('Quota')
+            }
+        )
+        self.fields['hidden_if_available'].widget.choices = self.fields['hidden_if_available'].choices
+        self.fields['hidden_if_available'].required = False
 
     class Meta:
         model = Item
@@ -430,11 +443,13 @@ class ItemUpdateForm(I18nModelForm):
             'generate_tickets',
             'original_price',
             'require_bundling',
-            'show_quota_left'
+            'show_quota_left',
+            'hidden_if_available',
         ]
         field_classes = {
             'available_from': SplitDateTimeField,
             'available_until': SplitDateTimeField,
+            'hidden_if_available': SafeModelChoiceField,
         }
         widgets = {
             'available_from': SplitDateTimePickerWidget(),

src/pretix/control/templates/pretixcontrol/item/index.html

@@ -31,6 +31,7 @@
                     {% bootstrap_field form.available_until layout="control" %}
                     {% bootstrap_field form.max_per_order layout="control" %}
                     {% bootstrap_field form.min_per_order layout="control" %}
+                    {% bootstrap_field form.hidden_if_available layout="control" %}
                     {% bootstrap_field form.require_voucher layout="control" %}
                     {% bootstrap_field form.hide_without_voucher layout="control" %}
                     {% bootstrap_field form.require_bundling layout="control" %}

src/pretix/control/urls.py

@@ -181,6 +181,7 @@ urlpatterns = [
         url(r'^questions/add$', item.QuestionCreate.as_view(), name='event.items.questions.add'),
         url(r'^quotas/$', item.QuotaList.as_view(), name='event.items.quotas'),
         url(r'^quotas/(?P<quota>\d+)/$', item.QuotaView.as_view(), name='event.items.quotas.show'),
+        url(r'^quotas/select$', typeahead.quotas_select2, name='event.items.quotas.select2'),
         url(r'^quotas/(?P<quota>\d+)/change$', item.QuotaUpdate.as_view(), name='event.items.quotas.edit'),
         url(r'^quotas/(?P<quota>\d+)/delete$', item.QuotaDelete.as_view(),
             name='event.items.quotas.delete'),

src/pretix/control/views/typeahead.py

@@ -309,6 +309,53 @@ def subevent_select2(request, **kwargs):
     return JsonResponse(doc)
 
 
+@event_permission_required(None)
+def quotas_select2(request, **kwargs):
+    query = request.GET.get('query', '')
+    try:
+        page = int(request.GET.get('page', '1'))
+    except ValueError:
+        page = 1
+
+    qf = Q(name__icontains=query) | Q(subevent__name__icontains=i18ncomp(query))
+    tz = request.event.timezone
+
+    dt = None
+    for f in get_format('DATE_INPUT_FORMATS'):
+        try:
+            dt = datetime.strptime(query, f)
+            break
+        except (ValueError, TypeError):
+            continue
+
+    if dt and request.event.has_subevents:
+        dt_start = make_aware(datetime.combine(dt.date(), time(hour=0, minute=0, second=0)), tz)
+        dt_end = make_aware(datetime.combine(dt.date(), time(hour=23, minute=59, second=59)), tz)
+        qf |= Q(subevent__date_from__gte=dt_start) & Q(subevent__date_from__lte=dt_end)
+
+    qs = request.event.quotas.filter(
+        qf
+    ).order_by('-subevent__date_from', 'name')
+
+    total = qs.count()
+    pagesize = 20
+    offset = (page - 1) * pagesize
+    doc = {
+        'results': [
+            {
+                'id': q.pk,
+                'name': str(q.name),
+                'text': q.name
+            }
+            for q in qs[offset:offset + pagesize]
+        ],
+        'pagination': {
+            "more": total >= (offset + pagesize)
+        }
+    }
+    return JsonResponse(doc)
+
+
 @event_permission_required(None)
 def checkinlist_select2(request, **kwargs):
     query = request.GET.get('query', '')