From 73a858cc8c01b89fc66925c46c57c253e12a29ae Mon Sep 17 00:00:00 2001
From: Kuroshini <o.hayatov@id-east.ru>
Date: Mon, 23 Sep 2019 18:21:59 +0300
Subject: [PATCH] Slugs feature migrations

---
 .../migrations/0013_auto_20190923_1505.py     | 38 ++++++++++++++++++
 .../migrations/0030_auto_20190923_1505.py     | 39 +++++++++++++++++++
 .../migrations/0011_auto_20190923_1505.py     | 38 ++++++++++++++++++
 3 files changed, 115 insertions(+)
 create mode 100644 apps/collection/migrations/0013_auto_20190923_1505.py
 create mode 100644 apps/establishment/migrations/0030_auto_20190923_1505.py
 create mode 100644 apps/news/migrations/0011_auto_20190923_1505.py

diff --git a/apps/collection/migrations/0013_auto_20190923_1505.py b/apps/collection/migrations/0013_auto_20190923_1505.py
new file mode 100644
index 00000000..6a44ee57
--- /dev/null
+++ b/apps/collection/migrations/0013_auto_20190923_1505.py
@@ -0,0 +1,38 @@
+# Generated by Django 2.2.4 on 2019-09-23 15:05
+from django.core.validators import EMPTY_VALUES
+from django.db import migrations, models
+
+from collection.models import Collection
+
+
+def migrate_data_forward(apps, schema_editor):
+    for instance in Collection.objects.all():
+        if instance.slug in EMPTY_VALUES:
+            instance.slug = None
+            instance.save(update_fields=['slug'])
+
+def migrate_data_backward(apps, schema_editor):
+    pass
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('collection', '0012_collection_slug'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='collection',
+            name='slug',
+            field=models.SlugField(null=True, verbose_name='Collection slug'),
+        ),
+        migrations.RunPython(
+            migrate_data_forward,
+            migrate_data_backward,
+        ),
+        migrations.AlterField(
+            model_name='collection',
+            name='slug',
+            field=models.SlugField(null=True, unique=True, verbose_name='Collection slug'),
+        ),
+    ]
diff --git a/apps/establishment/migrations/0030_auto_20190923_1505.py b/apps/establishment/migrations/0030_auto_20190923_1505.py
new file mode 100644
index 00000000..9614eca1
--- /dev/null
+++ b/apps/establishment/migrations/0030_auto_20190923_1505.py
@@ -0,0 +1,39 @@
+# Generated by Django 2.2.4 on 2019-09-23 15:05
+from django.core.validators import EMPTY_VALUES
+from django.db import migrations, models
+
+from establishment.models import Establishment
+
+
+def migrate_data_forward(apps, schema_editor):
+    for instance in Establishment.objects.all():
+        if instance.slug in EMPTY_VALUES:
+            instance.slug = None
+            instance.save(update_fields=['slug'])
+
+def migrate_data_backward(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('establishment', '0029_establishment_slug'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='establishment',
+            name='slug',
+            field=models.SlugField(null=True, verbose_name='Establishment slug'),
+        ),
+        migrations.RunPython(
+            migrate_data_forward,
+            migrate_data_backward,
+        ),
+        migrations.AlterField(
+            model_name='establishment',
+            name='slug',
+            field=models.SlugField(unique=True, null=True, verbose_name='Establishment slug'),
+        ),
+    ]
diff --git a/apps/news/migrations/0011_auto_20190923_1505.py b/apps/news/migrations/0011_auto_20190923_1505.py
new file mode 100644
index 00000000..b56a2d12
--- /dev/null
+++ b/apps/news/migrations/0011_auto_20190923_1505.py
@@ -0,0 +1,38 @@
+# Generated by Django 2.2.4 on 2019-09-23 15:05
+from django.core.validators import EMPTY_VALUES
+from django.db import migrations, models
+
+from news.models import News
+
+
+def migrate_data_forward(apps, schema_editor):
+    for instance in News.objects.all():
+        if instance.slug in EMPTY_VALUES:
+            instance.slug = None
+            instance.save(update_fields=['slug'])
+
+def migrate_data_backward(apps, schema_editor):
+    pass
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('news', '0010_news_slug'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='news',
+            name='slug',
+            field=models.SlugField(null=True, verbose_name='News slug'),
+        ),
+        migrations.RunPython(
+            migrate_data_forward,
+            migrate_data_backward,
+        ),
+        migrations.AlterField(
+            model_name='news',
+            name='slug',
+            field=models.SlugField(null=True, unique=True, verbose_name='News slug'),
+        ),
+    ]