Implement tag models

api/funkwhale_api/common/migrations/0003_cit_extension.py

@@ -0,0 +1,22 @@
+# Generated by Django 2.0.2 on 2018-02-27 18:43
+from django.db import migrations
+from django.contrib.postgres.operations import CITextExtension
+
+
+class CustomCITExtension(CITextExtension):
+    def database_forwards(self, app_label, schema_editor, from_state, to_state):
+        check_sql = "SELECT 1 FROM pg_extension WHERE extname = 'citext'"
+        with schema_editor.connection.cursor() as cursor:
+            cursor.execute(check_sql)
+            result = cursor.fetchall()
+
+        if result:
+            return
+        return super().database_forwards(app_label, schema_editor, from_state, to_state)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [("common", "0002_mutation")]
+
+    operations = [CustomCITExtension()]