create migration according to howto from Django homepage

fet2020/tasks/migrations/0002_alter_task_options_task_slug_task_slug_id_and_more.py

@@ -1,104 +1,103 @@
-# Generated by Django 4.0.6 on 2022-07-30 10:47
+# Generated by Django 4.1.2 on 2022-12-21 11:42
 
 import datetime
-import logging
-
-import fet2020.utils
-
 from django.db import migrations, models
 import django.db.models.deletion
-import django.db.models.expressions
+import fet2020.utils
-from django.utils.text import slugify
-
-
-def forwards_func(apps, schema_editor):
-    Tasks = apps.get_model("tasks", "Task")
-    for elem in Tasks.objects.all():
-        elem.slug_id = fet2020.utils.create_random_id()
-        elem.slug = elem.slug_id + "-" + slugify(elem.title)
-        elem.save(update_fields=["slug_id", "slug"])
-
-    TaskLists = apps.get_model("tasks", "TaskList")
-    for elem in TaskLists.objects.all():
-        elem.shortterm = slugify(elem.name)
-        elem.slug = slugify(elem.shortterm)
-        elem.save(update_fields=["shortterm", "slug"])
 
 
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('tasks', '0001_initial'),
+        ("tasks", "0001_initial"),
     ]
 
     operations = [
         migrations.AlterModelOptions(
-            name='task',
+            name="task",
-            options={'ordering': ('task_list', django.db.models.expressions.OrderBy(django.db.models.expressions.F('due_date'), descending=True, nulls_first=True)), 'verbose_name': 'Aufgabe', 'verbose_name_plural': 'Aufgaben'},
-        ),
-        # remove unique=True to set value, and then set option unique=True
-        migrations.AddField(
-            model_name='task',
-            name='slug',
-            field=models.SlugField(blank=True),
-        ),
-        # remove unique=True to set value, and then set option unique=True
-        migrations.AddField(
-            model_name='task',
-            name='slug_id',
-            field=models.CharField(default=fet2020.utils.create_random_id, editable=False, max_length=8),
-        ),
-        # remove unique=True to set value, and then set option unique=True
-        migrations.AddField(
-            model_name='tasklist',
-            name='shortterm',
-            field=models.CharField(blank=True, max_length=128),
-        ),
-        migrations.AlterField(
-            model_name='task',
-            name='title',
-            field=models.CharField(max_length=128, verbose_name='Titel'),
-        ),
-        migrations.AlterField(
-            model_name='tasklist',
-            name='name',
-            field=models.CharField(max_length=128),
-        ),
-        migrations.CreateModel(
-            name='Document',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('title', models.CharField(max_length=128, verbose_name='Titel')),
-                ('slug_id', models.CharField(default=fet2020.utils.create_random_id, editable=False, max_length=8, unique=True)),
-                ('etherpad_key', models.CharField(blank=True, max_length=50)),
-                ('date', models.DateField(default=datetime.date.today, verbose_name='Datum')),
-                ('task', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='tasks.task')),
-            ],
             options={
-                'verbose_name': 'Dokument',
+                "ordering": (
-                'verbose_name_plural': 'Dokumente',
+                    "task_list",
+                    models.OrderBy(
+                        models.F("due_date"), descending=True, nulls_first=True
+                    ),
+                ),
+                "verbose_name": "Aufgabe",
+                "verbose_name_plural": "Aufgaben",
             },
         ),
-        migrations.RunPython(forwards_func),
+        migrations.AddField(
-        # unique=True after setting value
+            model_name="task",
-        migrations.AlterField(
+            name="slug",
-            model_name='task',
+            field=models.SlugField(blank=True, null=True),
-            name='slug',
+        ),
-            field=models.SlugField(blank=True, unique=True),
+        migrations.AddField(
+            model_name="task",
+            name="slug_id",
+            field=models.CharField(
+                default=fet2020.utils.create_random_id,
+                editable=False,
+                max_length=8,
+                null=True,
+            ),
+        ),
+        migrations.AddField(
+            model_name="tasklist",
+            name="shortterm",
+            field=models.CharField(blank=True, max_length=128, null=True),
         ),
         migrations.AlterField(
-            model_name='task',
+            model_name="task",
-            name='slug_id',
+            name="title",
-            field=models.CharField(default=fet2020.utils.create_random_id, editable=False, max_length=8, unique=True),
+            field=models.CharField(max_length=128, verbose_name="Titel"),
         ),
         migrations.AlterField(
-            model_name='tasklist',
+            model_name="tasklist",
-            name='shortterm',
+            name="name",
-            field=models.CharField(blank=True, max_length=128, unique=True),
+            field=models.CharField(max_length=128),
         ),
         migrations.AlterField(
-            model_name='tasklist',
+            model_name="tasklist",
-            name='slug',
+            name="slug",
-            field=models.SlugField(blank=True, unique=True),
+            field=models.SlugField(blank=True, null=True),
+        ),
+        migrations.CreateModel(
+            name="Document",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("title", models.CharField(max_length=128, verbose_name="Titel")),
+                (
+                    "slug_id",
+                    models.CharField(
+                        default=fet2020.utils.create_random_id,
+                        editable=False,
+                        max_length=8,
+                        unique=True,
+                    ),
+                ),
+                ("etherpad_key", models.CharField(blank=True, max_length=50)),
+                (
+                    "date",
+                    models.DateField(default=datetime.date.today, verbose_name="Datum"),
+                ),
+                (
+                    "task",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE, to="tasks.task"
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "Dokument",
+                "verbose_name_plural": "Dokumente",
+            },
         ),
     ]

fet2020/tasks/migrations/0003_populate_unique_values.py

@@ -0,0 +1,29 @@
+# Generated by Django 4.1.2 on 2022-12-21 11:43
+
+from django.db import migrations
+import fet2020.utils
+
+
+def forwards_func(apps, schema_editor):
+    Tasks = apps.get_model("tasks", "Task")
+    for elem in Tasks.objects.all():
+        elem.slug_id = fet2020.utils.create_random_id()
+        elem.slug = elem.slug_id + "-" + slugify(elem.title)
+        elem.save(update_fields=["slug_id", "slug"])
+
+    TaskLists = apps.get_model("tasks", "TaskList")
+    for elem in TaskLists.objects.all():
+        elem.shortterm = slugify(elem.name)
+        elem.slug = slugify(elem.shortterm)
+        elem.save(update_fields=["shortterm", "slug"])
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("tasks", "0002_alter_task_options_task_slug_task_slug_id_and_more"),
+    ]
+
+    operations = [
+        migrations.RunPython(forwards_func, reverse_code=migrations.RunPython.noop),
+    ]

fet2020/tasks/migrations/0004_set_fields_unique.py

@@ -0,0 +1,39 @@
+# Generated by Django 4.1.2 on 2022-12-21 11:43
+
+from django.db import migrations, models
+import fet2020.utils
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("tasks", "0003_populate_unique_values"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="task",
+            name="slug",
+            field=models.SlugField(blank=True, unique=True),
+        ),
+        migrations.AlterField(
+            model_name="task",
+            name="slug_id",
+            field=models.CharField(
+                default=fet2020.utils.create_random_id,
+                editable=False,
+                max_length=8,
+                unique=True,
+            ),
+        ),
+        migrations.AlterField(
+            model_name="tasklist",
+            name="shortterm",
+            field=models.CharField(blank=True, max_length=128, unique=True),
+        ),
+        migrations.AlterField(
+            model_name="tasklist",
+            name="slug",
+            field=models.SlugField(blank=True, unique=True),
+        ),
+    ]