Add course_category to LearningUnit

server/vbv_lernwelt/competence/create_default_competence_profile.py

@@ -17,5 +17,5 @@ def create_default_competence_profile():
         parent=competence_profile_page,
         title='B1.3 Fahrzeug',
         text='Innerhalb des Handlungsfelds «Fahrzeug» bin ich fähig, die Ziele und Pläne des Kunden zu ergründen (SOLL).',
-        learning_unit=LearningUnit.objects.get(slug='versicherungsvermittlerin-lp-circle-analyse-lu-auto-verkaufen'),
+        learning_unit=LearningUnit.objects.get(slug='versicherungsvermittlerin-lp-circle-analyse-lu-fahrzeug'),
     )

server/vbv_lernwelt/competence/migrations/0001_initial.py

@@ -1,4 +1,4 @@
-# Generated by Django 3.2.13 on 2022-09-27 13:54
+# Generated by Django 3.2.13 on 2022-09-27 14:26
 
 from django.db import migrations, models
 import django.db.models.deletion
@@ -10,7 +10,6 @@ class Migration(migrations.Migration):
 
     dependencies = [
         ('wagtailcore', '0069_log_entry_jsonfield'),
-        ('learnpath', '0002_alter_learningcontent_contents'),
     ]
 
     operations = [
@@ -29,7 +28,6 @@ class Migration(migrations.Migration):
             fields=[
                 ('page_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='wagtailcore.page')),
                 ('text', models.TextField(default='')),
-                ('learning_unit', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='learnpath.learningunit')),
             ],
             options={
                 'abstract': False,

server/vbv_lernwelt/competence/migrations/0002_performancecriteria_learning_unit.py

@@ -0,0 +1,22 @@
+# Generated by Django 3.2.13 on 2022-09-27 14:26
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('learnpath', '0001_initial'),
+        ('competence', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='performancecriteria',
+            name='learning_unit',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='learnpath.learningunit'),
+        ),
+    ]

server/vbv_lernwelt/course/creators.py

@@ -16,18 +16,18 @@ def create_versicherungsvermittlerin_with_categories(apps=None, schema_editor=No
 
     course, _ = Course.objects.get_or_create(
         id=COURSE_VERSICHERUNGSVERMITTLERIN,
-        name='Versicherungsvermittler/in',
+        title='Versicherungsvermittler/in',
         category_name='Handlungsfeld'
     )
 
-    CourseCategory.objects.get_or_create(course=course, name='Allgemein', general=True)
+    CourseCategory.objects.get_or_create(course=course, title='Allgemein', general=True)
 
     for cat in [
-        'Fahrzeug', 'Reisen', 'Einkommensicherung', 'Gesundheit', 'Haushalt', 'Sparen',
+        'Fahrzeug', 'Reisen', 'Einkommenssicherung', 'Gesundheit', 'Haushalt', 'Sparen',
         'Pensionierung', 'KMU', 'Wohneigentum', 'Rechtsstreitigkeiten', 'Erben / Vererben',
         'Selbständigkeit',
     ]:
-        CourseCategory.objects.get_or_create(course=course, name=cat)
+        CourseCategory.objects.get_or_create(course=course, title=cat)
 
     # create default course page
     site = Site.objects.filter(is_default_site=True).first()

server/vbv_lernwelt/course/factories.py

@@ -8,7 +8,7 @@ class CourseFactory(DjangoModelFactory):
     class Meta:
         model = Course
 
-    name = 'Versicherungsvermittler/in'
+    title = 'Versicherungsvermittler/in'
     category_name = 'Handlungsfeld'
 
 

server/vbv_lernwelt/course/migrations/0001_initial.py

@@ -1,4 +1,4 @@
-# Generated by Django 3.2.13 on 2022-09-19 14:57
+# Generated by Django 3.2.13 on 2022-09-27 14:26
 
 from django.db import migrations, models
 import django.db.models.deletion
@@ -17,7 +17,7 @@ class Migration(migrations.Migration):
             name='Course',
             fields=[
                 ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('name', models.CharField(max_length=255, verbose_name='Titel')),
+                ('title', models.CharField(max_length=255, verbose_name='Titel')),
                 ('category_name', models.CharField(default='Kategorie', max_length=255, verbose_name='Kategorie-Name')),
             ],
             options={
@@ -39,7 +39,7 @@ class Migration(migrations.Migration):
             name='CourseCategory',
             fields=[
                 ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('name', models.CharField(blank=True, max_length=255, verbose_name='Titel')),
+                ('title', models.CharField(blank=True, max_length=255, verbose_name='Titel')),
                 ('general', models.BooleanField(default=False, verbose_name='Allgemein')),
                 ('course', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='course.course')),
             ],

server/vbv_lernwelt/course/models.py

@@ -7,24 +7,24 @@ from vbv_lernwelt.core.model_utils import find_available_slug
 
 
 class Course(models.Model):
-    name = models.CharField(_('Titel'), max_length=255)
+    title = models.CharField(_('Titel'), max_length=255)
     category_name = models.CharField(_('Kategorie-Name'), max_length=255, default='Kategorie')
 
     class Meta:
         verbose_name = _("Lerngang")
 
     def __str__(self):
-        return f"{self.name}"
+        return f"{self.title}"
 
 
 class CourseCategory(models.Model):
     # Die Handlungsfelder im "Versicherungsvermittler/in"
-    name = models.CharField(_('Titel'), max_length=255, blank=True)
+    title = models.CharField(_('Titel'), max_length=255, blank=True)
     course = models.ForeignKey('course.Course', on_delete=models.CASCADE)
     general = models.BooleanField(_('Allgemein'), default=False)
 
     def __str__(self):
-        return f"{self.course} / {self.name}"
+        return f"{self.course} / {self.title}"
 
 
 class CoursePage(Page):

server/vbv_lernwelt/course/serializers.py

@@ -6,10 +6,10 @@ from vbv_lernwelt.course.models import CourseCategory, Course
 class CourseSerializer(serializers.ModelSerializer):
     class Meta:
         model = Course
-        fields = ['id', 'name', 'category_name']
+        fields = ['id', 'title', 'category_name']
 
 
 class CourseCategorySerializer(serializers.ModelSerializer):
     class Meta:
         model = CourseCategory
-        fields = ['id', 'name', 'general',]
+        fields = ['id', 'title', 'general',]

server/vbv_lernwelt/learnpath/create_default_learning_path.py

@@ -6,7 +6,7 @@ from wagtail_localize.models import LocaleSynchronization
 
 from vbv_lernwelt.core.admin import User
 from vbv_lernwelt.course.consts import COURSE_VERSICHERUNGSVERMITTLERIN
-from vbv_lernwelt.course.models import CoursePage
+from vbv_lernwelt.course.models import CoursePage, CourseCategory
 from vbv_lernwelt.learnpath.models import LearningPath, Topic, Circle, LearningSequence, LearningContent, LearningUnit, \
     LearningUnitQuestion
 from vbv_lernwelt.learnpath.tests.learning_path_factories import LearningPathFactory, TopicFactory, CircleFactory, \
@@ -63,6 +63,7 @@ def create_circle_children(circle, title):
     lu = LearningUnitFactory(
         title='Absicherung der Familie',
         parent=circle,
+        course_category=CourseCategory.objects.get(course_id=COURSE_VERSICHERUNGSVERMITTLERIN, title='Einkommenssicherung')
     )
     LearningUnitQuestionFactory(
         title="Ich bin in der Lage, mit geeigneten Fragestellungen die Deckung von Versicherungen zu erfassen.",
@@ -122,7 +123,10 @@ def create_circle_children(circle, title):
     )
 
     LearningSequenceFactory(title='Anwenden', parent=circle, icon='it-icon-ls-apply')
-    lu = LearningUnitFactory(title='Prämien einsparen', parent=circle)
+    lu = LearningUnitFactory(
+        title='Prämien einsparen',
+        parent=circle,
+    )
     LearningUnitQuestionFactory(
         title="Passende Frage zu Anwenden",
         parent=lu
@@ -140,7 +144,11 @@ def create_circle_children(circle, title):
         contents=[('exercise', ExerciseBlockFactory())]
     )
 
-    lu = LearningUnitFactory(title='Sich selbständig machen', parent=circle)
+    lu = LearningUnitFactory(
+        title='Sich selbständig machen',
+        parent=circle,
+        course_category=CourseCategory.objects.get(course_id=COURSE_VERSICHERUNGSVERMITTLERIN, title='Selbständigkeit')
+    )
     LearningUnitQuestionFactory(
         title="Passende Frage zu 'Sich selbständig machen'",
         parent=lu
@@ -158,7 +166,11 @@ def create_circle_children(circle, title):
         contents=[('exercise', ExerciseBlockFactory())]
     )
 
-    lu = LearningUnitFactory(title='Auto verkaufen', parent=circle)
+    lu = LearningUnitFactory(
+        title='Auto verkaufen',
+        parent=circle,
+        course_category=CourseCategory.objects.get(course_id=COURSE_VERSICHERUNGSVERMITTLERIN, title='Fahrzeug')
+    )
     LearningUnitQuestionFactory(
         title='Passende Frage zu "Auto verkaufen"',
         parent=lu
@@ -188,7 +200,11 @@ def create_circle_children(circle, title):
         contents=[('exercise', ExerciseBlockFactory(url='/static/media/web_based_trainings/training-04-a-01-rafael-fasel-wechselt-sein-auto-einstieg/scormcontent/index.html'))]
     )
 
-    lu = LearningUnitFactory(title='Pensionierung', parent=circle)
+    lu = LearningUnitFactory(
+        title='Pensionierung',
+        parent=circle,
+        course_category=CourseCategory.objects.get(course_id=COURSE_VERSICHERUNGSVERMITTLERIN, title='Pensionierung')
+    )
     LearningUnitQuestionFactory(
         title='Passende Frage zu "Pensionierung"',
         parent=lu
@@ -218,7 +234,11 @@ def create_circle_children(circle, title):
         contents=[('exercise', ExerciseBlockFactory())]
     )
 
-    lu = LearningUnitFactory(title='Reisen', parent=circle)
+    lu = LearningUnitFactory(
+        title='Reisen',
+        parent=circle,
+        course_category=CourseCategory.objects.get(course_id=COURSE_VERSICHERUNGSVERMITTLERIN, title='Reisen')
+    )
     LearningUnitQuestionFactory(
         title='Passende Frage zu "Reisen"',
         parent=lu
@@ -237,7 +257,11 @@ def create_circle_children(circle, title):
             url='/static/media/web_based_trainings/story-06-a-01-emma-und-ayla-campen-durch-amerika-einstieg/scormcontent/index.html'))]
     )
 
-    lu = LearningUnitFactory(title='Haushalt', parent=circle)
+    lu = LearningUnitFactory(
+        title='Haushalt',
+        parent=circle,
+        course_category=CourseCategory.objects.get(course_id=COURSE_VERSICHERUNGSVERMITTLERIN, title='Haushalt')
+    )
     LearningUnitQuestionFactory(
         title='Passende Frage zu "Haushalt"',
         parent=lu
@@ -262,7 +286,11 @@ def create_circle_children(circle, title):
     )
 
     LearningSequenceFactory(title='Üben', parent=circle, icon='it-icon-ls-practice')
-    lu = LearningUnitFactory(title='Kind zieht von zu Hause aus', parent=circle)
+    lu = LearningUnitFactory(
+        title='Kind zieht von zu Hause aus',
+        parent=circle,
+        course_category=CourseCategory.objects.get(course_id=COURSE_VERSICHERUNGSVERMITTLERIN, title='Einkommenssicherung')
+    )
     LearningUnitQuestionFactory(
         title='Passende Frage zu "Kind zieht von zu Hause aus"',
         parent=lu
@@ -287,7 +315,11 @@ def create_circle_children(circle, title):
     )
 
     LearningSequenceFactory(title='Testen', parent=circle, icon='it-icon-ls-test')
-    lu = LearningUnitFactory(title='Kind zieht von zu Hause aus "Testen"', parent=circle)
+    lu = LearningUnitFactory(
+        title='Kind zieht von zu Hause aus "Testen"',
+        parent=circle,
+        course_category=CourseCategory.objects.get(course_id=COURSE_VERSICHERUNGSVERMITTLERIN, title='Einkommenssicherung')
+    )
     LearningUnitQuestionFactory(
         title='Passende Frage zu "Kind zieht von zu Hause aus"',
         parent=lu

server/vbv_lernwelt/learnpath/migrations/0001_initial.py

@@ -1,4 +1,4 @@
-# Generated by Django 3.2.13 on 2022-09-19 15:05
+# Generated by Django 3.2.13 on 2022-09-27 14:26
 
 from django.db import migrations, models
 import django.db.models.deletion
@@ -13,6 +13,7 @@ class Migration(migrations.Migration):
 
     dependencies = [
         ('wagtailcore', '0069_log_entry_jsonfield'),
+        ('course', '0001_initial'),
     ]
 
     operations = [
@@ -35,7 +36,7 @@ class Migration(migrations.Migration):
             fields=[
                 ('page_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='wagtailcore.page')),
                 ('minutes', models.PositiveIntegerField(default=15)),
-                ('contents', wagtail.fields.StreamField([('video', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('web_based_training', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('podcast', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('competence', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock())])), ('exercise', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('document', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock())])), ('knowledge', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock())]))], use_json_field=None)),
+                ('contents', wagtail.fields.StreamField([('video', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('resource', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('exercise', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('online_training', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('media_library', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('document', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('test', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('book', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('assignment', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())]))], use_json_field=None)),
             ],
             options={
                 'verbose_name': 'Learning Content',
@@ -63,16 +64,6 @@ class Migration(migrations.Migration):
             },
             bases=('wagtailcore.page',),
         ),
-        migrations.CreateModel(
-            name='LearningUnit',
-            fields=[
-                ('page_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='wagtailcore.page')),
-            ],
-            options={
-                'verbose_name': 'Learning Unit',
-            },
-            bases=('wagtailcore.page',),
-        ),
         migrations.CreateModel(
             name='LearningUnitQuestion',
             fields=[
@@ -94,4 +85,15 @@ class Migration(migrations.Migration):
             },
             bases=('wagtailcore.page',),
         ),
+        migrations.CreateModel(
+            name='LearningUnit',
+            fields=[
+                ('page_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='wagtailcore.page')),
+                ('course_category', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='course.coursecategory')),
+            ],
+            options={
+                'verbose_name': 'Learning Unit',
+            },
+            bases=('wagtailcore.page',),
+        ),
     ]

server/vbv_lernwelt/learnpath/migrations/0002_alter_learningcontent_contents.py

@@ -1,20 +0,0 @@
-# Generated by Django 3.2.13 on 2022-09-27 13:54
-
-from django.db import migrations
-import wagtail.blocks
-import wagtail.fields
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('learnpath', '0001_initial'),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name='learningcontent',
-            name='contents',
-            field=wagtail.fields.StreamField([('video', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('resource', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('exercise', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('online_training', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('media_library', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('document', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('test', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('book', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())])), ('assignment', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock()), ('url', wagtail.blocks.URLBlock())]))], use_json_field=None),
-        ),
-    ]

server/vbv_lernwelt/learnpath/models.py

@@ -8,6 +8,7 @@ from wagtail.images.blocks import ImageChooserBlock
 from wagtail.models import Page
 
 from vbv_lernwelt.core.model_utils import find_available_slug
+from vbv_lernwelt.course.models import CoursePage
 from vbv_lernwelt.learnpath.models_learning_unit_content import VideoBlock, \
     ExerciseBlock, DocumentBlock, AssignmentBlock, BookBlock, MediaLibraryBlock, \
     OnlineTrainingBlock, ResourceBlock, TestBlock
@@ -165,6 +166,11 @@ class LearningSequence(Page):
 class LearningUnit(Page):
     parent_page_types = ['learnpath.Circle']
     subpage_types = []
+    course_category = models.ForeignKey('course.CourseCategory', on_delete=models.SET_NULL, null=True, blank=True)
+
+    content_panels = Page.content_panels + [
+        FieldPanel('course_category'),
+    ]
 
     class Meta:
         verbose_name = "Learning Unit"
@@ -173,7 +179,18 @@ class LearningUnit(Page):
         return f"{self.title}"
 
     def full_clean(self, *args, **kwargs):
-        self.slug = find_slug_with_parent_prefix(self, 'lu')
+        course = None
+        course_parent_page = self.get_ancestors().exact_type(CoursePage).last()
+        if course_parent_page:
+            course = course_parent_page.specific.course
+
+        if self.course_category is None and course:
+            self.course_category = course.coursecategory_set.filter(general=True).first()
+
+        if self.course_category.general:
+            self.slug = find_slug_with_parent_prefix(self, 'lu')
+        else:
+            self.slug = find_slug_with_parent_prefix(self, 'lu', self.course_category.title)
         super(LearningUnit, self).full_clean(*args, **kwargs)
 
     @classmethod
@@ -265,11 +282,14 @@ class LearningContent(Page):
         return f"{self.title}"
 
 
-def find_slug_with_parent_prefix(page, type_prefix):
+def find_slug_with_parent_prefix(page, type_prefix, slug_postfix=None):
     parent_slug = page.get_ancestors().exact_type(LearningPath, Circle).last().slug
     if parent_slug:
         slug_prefix = f"{parent_slug}-{type_prefix}"
     else:
         slug_prefix = type_prefix
 
-    return find_available_slug(slugify(f'{slug_prefix}-{page.title}', allow_unicode=True))
+    if slug_postfix is None:
+        slug_postfix = page.title
+
+    return find_available_slug(slugify(f'{slug_prefix}-{slug_postfix}', allow_unicode=True))

server/vbv_lernwelt/media_library/create_default_documents.py

@@ -14,9 +14,9 @@ def create_default_collections():
     root, created = Collection.objects.get_or_create(name='Root', depth=0)
 
     for course in Course.objects.all():
-        course_collection = root.add_child(name=course.name)
+        course_collection = root.add_child(name=course.title)
         for cat in course.coursecategory_set.all():
-            cat_collection = course_collection.add_child(name=cat.name)
+            cat_collection = course_collection.add_child(name=cat.title)
 
 
 def create_default_documents():

server/vbv_lernwelt/media_library/create_default_media_library.py

@@ -43,7 +43,7 @@ welche Aspekte du bei einer Offerte beachten musst und wie du dem Kunden die Lö
         ])
         media_category = MediaCategoryPageFactory(
             overview_icon=overview_icon,
-            title=cat.name,
+            title=cat.title,
             course_category=cat,
             parent=media_lib_page,
             introduction_text=introduction_text,

server/vbv_lernwelt/media_library/migrations/0001_initial.py

@@ -1,16 +1,15 @@
-# Generated by Django 3.2.13 on 2022-09-23 15:27
+# Generated by Django 3.2.13 on 2022-09-27 14:26
 
+from django.conf import settings
+from django.db import migrations, models
 import django.db.models.deletion
 import taggit.managers
+import vbv_lernwelt.media_library.content_blocks
 import wagtail.blocks
 import wagtail.documents.blocks
 import wagtail.fields
 import wagtail.models.collections
 import wagtail.search.index
-from django.conf import settings
-from django.db import migrations, models
-
-import vbv_lernwelt.media_library.content_blocks
 
 
 class Migration(migrations.Migration):
@@ -18,10 +17,10 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
-        ('wagtailcore', '0069_log_entry_jsonfield'),
-        ('taggit', '0004_alter_taggeditem_content_type_alter_taggeditem_tag'),
         ('course', '0001_initial'),
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('wagtailcore', '0069_log_entry_jsonfield'),
+        ('taggit', '0004_alter_taggeditem_content_type_alter_taggeditem_tag'),
     ]
 
     operations = [
@@ -54,7 +53,7 @@ class Migration(migrations.Migration):
                 ('items', wagtail.fields.StreamField([('item', wagtail.blocks.TextBlock())], use_json_field=True)),
                 ('overview_icon', models.CharField(default='icon-hf-fahrzeug', max_length=255)),
                 ('body', wagtail.fields.StreamField([('content_collection', wagtail.blocks.StructBlock([('title', wagtail.blocks.TextBlock()), ('contents', wagtail.blocks.StreamBlock([('Links', wagtail.blocks.StructBlock([('title', wagtail.blocks.TextBlock(blank=False, null=False)), ('description', wagtail.blocks.TextBlock(default='')), ('link_display_text', wagtail.blocks.CharBlock(default='Link öffnen', max_length=255)), ('url', wagtail.blocks.URLBlock())])), ('Documents', wagtail.documents.blocks.DocumentChooserBlock()), ('Ankers', vbv_lernwelt.media_library.content_blocks.AnchorBlock()), ('CrossReference', wagtail.blocks.StructBlock([('description', wagtail.blocks.TextBlock(default='')), ('link_display_text', wagtail.blocks.CharBlock(default='Link öffnen', max_length=255)), ('category', wagtail.blocks.PageChooserBlock(page_type=['media_library.MediaCategoryPage']))]))]))]))], null=True, use_json_field=True)),
-                ('course_category', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='course.coursecategory')),
+                ('course_category', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='course.coursecategory')),
             ],
             options={
                 'abstract': False,

server/vbv_lernwelt/media_library/models.py

@@ -38,7 +38,7 @@ class MediaCategoryPage(Page):
     """
     Handlungsfeld. zB. Fahrzeug
     """
-    course_category = models.ForeignKey('course.CourseCategory', on_delete=models.CASCADE)
+    course_category = models.ForeignKey('course.CourseCategory', on_delete=models.SET_NULL, null=True, blank=True)
     parent_page_types = ['media_library.MediaLibraryPage']
     introduction_text = models.TextField(default='')
     description_title = models.TextField(default='Das erwartet dich in diesem Handlungsfeld')