flows: FlowStageBinding: rename .flow to .target to fix select_subclasses()

passbook/flows/migrations/0010_provider_flows.py

@@ -0,0 +1,48 @@
+# Generated by Django 3.0.6 on 2020-05-24 11:34
+
+from django.apps.registry import Apps
+from django.db import migrations
+from django.db.backends.base.schema import BaseDatabaseSchemaEditor
+
+from passbook.flows.models import FlowDesignation
+
+
+def create_default_provider_authorization_flow(
+    apps: Apps, schema_editor: BaseDatabaseSchemaEditor
+):
+    Flow = apps.get_model("passbook_flows", "Flow")
+    FlowStageBinding = apps.get_model("passbook_flows", "FlowStageBinding")
+
+    ConsentStage = apps.get_model("passbook_stages_consent", "ConsentStage")
+
+    db_alias = schema_editor.connection.alias
+
+    # Empty flow for providers where consent is implicitly given
+    Flow.objects.using(db_alias).update_or_create(
+        slug="default-provider-authorization-implicit-consent",
+        designation=FlowDesignation.AUTHORIZATION,
+        defaults={"name": "Authorize Application"},
+    )
+
+    # Flow with consent form to obtain explicit user consent
+    flow, _ = Flow.objects.using(db_alias).update_or_create(
+        slug="default-provider-authorization-explicit-consent",
+        designation=FlowDesignation.AUTHORIZATION,
+        defaults={"name": "Authorize Application"},
+    )
+    stage, _ = ConsentStage.objects.using(db_alias).update_or_create(
+        name="default-provider-authorization-consent"
+    )
+    FlowStageBinding.objects.using(db_alias).update_or_create(
+        target=flow, stage=stage, defaults={"order": 0}
+    )
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("passbook_flows", "0009_source_flows"),
+        ("passbook_stages_consent", "0001_initial"),
+    ]
+
+    operations = [migrations.RunPython(create_default_provider_authorization_flow)]