chore: Make migration for project membership list

terraso_backend/apps/project_management/migrations/0015_remove_project_group_project_membership_list.py

@@ -0,0 +1,31 @@
+# Generated by Django 4.2.5 on 2023-09-15 15:24
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("collaboration", "0005_change_collaborator_to_editor"),
+        ("project_management", "0014_site_privacy_alter_project_description"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="project",
+            name="membership_list",
+            field=models.OneToOneField(
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                to="collaboration.membershiplist",
+            ),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name="project",
+            name="group",
+            field=models.OneToOneField(
+                null=True, on_delete=django.db.models.deletion.CASCADE, to="core.group"
+            ),
+        ),
+    ]

terraso_backend/apps/project_management/migrations/0016_auto_20230915_1527.py

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+# Generated by Django 4.2.5 on 2023-09-15 15:27
+
+from django.db import migrations
+
+from apps.project_management import collaboration_roles
+
+
+def migrate_forward(apps, schema_editor):
+    Project = apps.get_model("project_management", "Project")
+    MembershipList = apps.get_model("collaboration", "MembershipList")
+    Membership = apps.get_model("collaboration", "Membership")
+    # The example docs https://docs.djangoproject.com/en/4.2/ref/migration-operations/#runpython
+    # use the db_alias.
+    # probably not technically necessary because we don't use multiple DBs
+    db_alias = schema_editor.connection.alias
+    for project in Project.objects.using(db_alias).all():
+        group = project.group
+        project.membership_list = MembershipList.objects.using(db_alias).create(
+            membership_type="open",
+            enroll_method="join",
+        )
+        # add group memberships to membership list
+        for membership in group.memberships.all():
+            user_role = (
+                collaboration_roles.ROLE_MANAGER
+                if membership.user_role == "manager"
+                else collaboration_roles.ROLE_VIEWER
+            )
+
+            if (
+                Membership.objects.using(db_alias)
+                .filter(user=membership.user, membership_list=project.membership_list)
+                .exists()
+            ):
+                # it seems like group constraints are not as strict as MembershipLists
+                # if there are several Memberships with the same user, just ignore
+                # (this was happening with my local DB instance)
+                continue
+            Membership.objects.using(db_alias).create(
+                user=membership.user,
+                membership_list=project.membership_list,
+                user_role=user_role,
+                membership_status="approved",
+            )
+            # clean up
+            membership.delete()
+        project.group.delete()
+        project.group = None
+        project.save()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("project_management", "0015_remove_project_group_project_membership_list"),
+    ]
+
+    operations = [migrations.RunPython(migrate_forward, atomic=True)]

terraso_backend/apps/project_management/migrations/0017_auto_20230915_1527.py

@@ -0,0 +1,26 @@
+# Generated by Django 4.2.5 on 2023-09-15 15:27
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("project_management", "0016_auto_20230915_1527"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="project",
+            name="group",
+        ),
+        migrations.AlterField(
+            model_name="project",
+            name="membership_list",
+            field=models.OneToOneField(
+                on_delete=django.db.models.deletion.CASCADE,
+                to="collaboration.membershiplist",
+                null=False,
+            ),
+        ),
+    ]