Added temporary datamigrations for photoalbum -> externallink (release preparation).

django_lostplaces/lostplaces/migrations_release_temp/0008_photoalbum_linktype.py

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+# Generated by Django 3.2.7 on 2021-10-01 19:50
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('lostplaces', '0007_auto_20211001_1925'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='photoalbum',
+            name='linktype',
+            field=models.CharField(blank=True, max_length=20, null=True, verbose_name='link type'),
+        ),
+    ]

django_lostplaces/lostplaces/migrations_release_temp/0009_photoalbum_externallink_interim.py

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+# Generated by Django 3.2.7 on 2021-10-01 20:13
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('lostplaces', '0008_photoalbum_linktype'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ExternalLink',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('submitted_when', models.DateTimeField(auto_now_add=True, null=True, verbose_name='Submission date')),
+                ('subclass', models.IntegerField(default=-1)),
+                ('subclassid', models.IntegerField(default=-1)),
+                ('url', models.URLField(verbose_name='URL')),
+                ('label', models.CharField(max_length=100, verbose_name='link text')),
+                ('linktype', models.CharField(blank=True, max_length=20, null=True, verbose_name='link type')),
+                ('place', models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='externallinks', to='lostplaces.place')),
+                ('submitted_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='externallinks', to='lostplaces.explorer', verbose_name='Submitter')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+        migrations.AddField(
+            model_name='photoalbum',
+            name='externallink_ptr',
+            field=models.OneToOneField(auto_created=True, null=True, blank=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, serialize=False, to='lostplaces.externallink'),
+            preserve_default=False,
+        ),
+    ]

django_lostplaces/lostplaces/migrations_release_temp/0010_photoalbum_externallink_datamigration.py

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+# Generated by Django 3.2.7 on 2021-10-01 20:32
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('lostplaces', '0009_photoalbum_externallink_interim'),
+    ]
+
+    operations = [
+        # insert data from subclass into parent class with subclass 'number' and primary key/id
+        migrations.RunSQL("""INSERT INTO lostplaces_externallink (submitted_when, url, label, place_id, submitted_by_id, subclass, subclassid)
+                        SELECT submitted_when, url, label, place_id, submitted_by_id, 1, id
+                        FROM lostplaces_photoalbum;"""
+
+        ),
+        # update subclass primary key to point to parent class (notice composite key values):
+        migrations.RunSQL("UPDATE lostplaces_photoalbum SET externallink_ptr_id=lostplaces_externallink.id FROM lostplaces_externallink WHERE lostplaces_externallink.subclassid=lostplaces_photoalbum.id AND lostplaces_externallink.subclass=1;"
+        ),
+    ]

django_lostplaces/lostplaces/migrations_release_temp/0011_remove_migrated_photoalbum_data.py

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+# Generated by Django 3.2.7 on 2021-10-01 22:48
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('lostplaces', '0010_photoalbum_externallink_datamigration'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='externallink',
+            name='subclass',
+        ),
+        migrations.RemoveField(
+            model_name='externallink',
+            name='subclassid',
+        ),
+        migrations.RemoveField(
+            model_name='photoalbum',
+            name='id',
+        ),
+        migrations.RemoveField(
+            model_name='photoalbum',
+            name='label',
+        ),
+        migrations.RemoveField(
+            model_name='photoalbum',
+            name='linktype',
+        ),
+        migrations.RemoveField(
+            model_name='photoalbum',
+            name='place',
+        ),
+        migrations.RemoveField(
+            model_name='photoalbum',
+            name='submitted_by',
+        ),
+        migrations.RemoveField(
+            model_name='photoalbum',
+            name='submitted_when',
+        ),
+        migrations.RemoveField(
+            model_name='photoalbum',
+            name='url',
+        ),
+        migrations.AlterField(
+            model_name='photoalbum',
+            name='externallink_ptr',
+            field=models.OneToOneField(auto_created=True, default=-1, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='lostplaces.externallink'),
+            preserve_default=False,
+        ),
+    ]