Removes hardcoded white in announcements

bookwyrm/migrations/0144_alter_announcement_display_type.py

@@ -0,0 +1,39 @@
+# Generated by Django 3.2.12 on 2022-03-01 18:46
+
+from django.db import migrations, models
+
+
+def remove_white(apps, schema_editor):
+    """don't hardcode white announcements"""
+    db_alias = schema_editor.connection.alias
+    announcement_model = apps.get_model("bookwyrm", "Announcement")
+    announcement_model.objects.using(db_alias).filter(display_type="white-ter").update(
+        display_type=None
+    )
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bookwyrm", "0143_merge_0142_auto_20220227_1752_0142_user_hide_follows"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="announcement",
+            name="display_type",
+            field=models.CharField(
+                blank=True,
+                choices=[
+                    ("primary-light", "Primary"),
+                    ("success-light", "Success"),
+                    ("link-light", "Link"),
+                    ("warning-light", "Warning"),
+                    ("danger-light", "Danger"),
+                ],
+                max_length=20,
+                null=True,
+            ),
+        ),
+        migrations.RunPython(remove_white, reverse_code=migrations.RunPython.noop),
+    ]