Allow mixed ordering of items in newsletter

website/newsletters/admin.py

@@ -4,29 +4,20 @@ from django.shortcuts import redirect
 
 from newsletters.models import Newsletter, NewsletterEvent, NewsletterItem
 from utils.translation import TranslatedModelAdmin
-
-from .forms import NewsletterEventForm, NewsletterItemForm
+from .forms import NewsletterEventForm
 
 
 class NewsletterItemInline(admin.StackedInline):
     """The inline for the text items in the newsletter"""
-    form = NewsletterItemForm
     model = NewsletterItem
     extra = 0
-    ordering = ('_order',)
-
-    def get_formset(self, request, obj=None, **kwargs):
-        formset = super().get_formset(request, obj, **kwargs)
-        if obj is not None:
-            count = obj.newslettercontent_set.count()
-            formset.form.declared_fields['order'].initial = count
-        return formset
 
 
 class NewsletterEventInline(NewsletterItemInline):
     """The inline for the event items in the newsletter"""
     form = NewsletterEventForm
     model = NewsletterEvent
+    extra = 0
 
 
 @admin.register(Newsletter)
@@ -45,18 +36,6 @@ class NewsletterAdmin(TranslatedModelAdmin):
         }),
     )
 
-    def save_formset(self, request, form, formset, change):
-        """Save formsets with their order"""
-        formset.save()
-
-        form.instance.set_newslettercontent_order([
-            f.instance.pk
-            for f in sorted(formset.forms,
-                            key=lambda x: (x.cleaned_data['order'],
-                                           x.instance.pk))
-        ])
-        form.instance.save()
-
     def change_view(self, request, object_id, form_url=''):
         """
         Renders the change view

website/newsletters/apps.py

@@ -6,4 +6,4 @@ from django.utils.translation import gettext_lazy as _
 class NewslettersConfig(AppConfig):
     """AppConfig for the newsletters package"""
     name = 'newsletters'
-    verbose_name = _('News letters')
+    verbose_name = _('Newsletters')

website/newsletters/forms.py

@@ -4,29 +4,10 @@ from django.utils import timezone
 from django.utils.translation import ugettext_lazy as _
 
 from events.models import Event
-from .models import NewsletterItem, NewsletterEvent, Newsletter
+from .models import NewsletterEvent
 
 
-class NewsletterItemForm(forms.ModelForm):
-    """Custom ModelForm for the NewsletterItem model to add the order field"""
-    order = forms.IntegerField(label=_('order'), initial=0)
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        try:
-            newsletter = self.instance.newsletter
-            order = newsletter.get_newslettercontent_order()
-            order_value = list(order).index(self.instance.pk)
-            self.fields['order'].initial = order_value
-        except Newsletter.DoesNotExist:
-            pass
-
-    class Meta:
-        fields = '__all__'
-        model = NewsletterItem
-
-
-class NewsletterEventForm(NewsletterItemForm):
+class NewsletterEventForm(forms.ModelForm):
     """
     Custom ModelForm for the NewsletterEvent model to
     add the order field and javascript for automatic field filling
@@ -45,7 +26,7 @@ class NewsletterEventForm(NewsletterItemForm):
         self.fields['event'].required = False
 
     class Meta:
-        fields = ('event', 'title_en', 'title_nl',
+        fields = ('order', 'event', 'title_en', 'title_nl',
                   'description_en', 'description_nl', 'what_en', 'what_nl',
                   'where_en', 'where_nl', 'start_datetime', 'end_datetime',
                   'show_costs_warning', 'price', 'penalty_costs')

website/newsletters/locale/nl/LC_MESSAGES/django.po

@@ -5,8 +5,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Thaliawebsite: nieuwsbrieven\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2018-10-24 23:55+0200\n"
-"PO-Revision-Date: 2018-10-24 23:56+0200\n"
+"POT-Creation-Date: 2019-04-13 16:03+0200\n"
+"PO-Revision-Date: 2019-04-13 16:00+0200\n"
 "Last-Translator: Sébastiaan Versteeg <se_bastiaan@outlook.com>\n"
 "Language-Team: Technicie <www@thalia.nu>\n"
 "Language: nl\n"
@@ -14,15 +14,15 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
-"X-Generator: Poedit 2.2\n"
+"X-Generator: Poedit 2.2.1\n"
 
 #: apps.py
-msgid "News letters"
+msgid "Newsletters"
 msgstr "Nieuwsbrieven"
 
 #: forms.py
-msgid "order"
-msgstr "volgorde"
+msgid "Event"
+msgstr "Evenement"
 
 #: models.py
 msgid "Title"
@@ -66,6 +66,10 @@ msgstr "Controleer of alle links absoluut zijn en http(s):// bevatten."
 msgid "Description"
 msgstr "Beschrijving"
 
+#: models.py
+msgid "order"
+msgstr "volgorde"
+
 #: models.py templates/newsletters/email.html templates/newsletters/email.txt
 msgid "What"
 msgstr "Wat"

website/newsletters/migrations/0008_auto_20190413_1603.py

+# Generated by Django 2.1.8 on 2019-04-13 14:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('newsletters', '0007_newsletter_send_date'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='newslettercontent',
+            options={'ordering': ('order',)},
+        ),
+        migrations.AddField(
+            model_name='newslettercontent',
+            name='order',
+            field=models.PositiveIntegerField(default=0, null=True, verbose_name='order'),
+        ),
+        migrations.AlterOrderWithRespectTo(
+            name='newslettercontent',
+            order_with_respect_to=None,
+        ),
+    ]

website/newsletters/models.py

@@ -108,6 +108,13 @@ class NewsletterContent(models.Model, metaclass=ModelTranslateMeta):
 
     newsletter = models.ForeignKey(Newsletter, on_delete=models.CASCADE)
 
+    order = models.PositiveIntegerField(
+        verbose_name=_('order'),
+        blank=False,
+        null=True,
+        default=0
+    )
+
     def clean(self):
         super().clean()
 
@@ -127,12 +134,12 @@ class NewsletterContent(models.Model, metaclass=ModelTranslateMeta):
         if errors:
             raise ValidationError(errors)
 
-    class Meta:
-        order_with_respect_to = 'newsletter'
-
     def __str__(self):
         return self.title
 
+    class Meta:
+        ordering = ('order',)
+
 
 class NewsletterItem(NewsletterContent):
     """Describes one piece of text content of a newsletter"""