wip group membership

 * closes inveniosoftware/invenio-app-rdm#2186

invenio_communities/alembic/ab7c937cdd3f_change_fk_groupid_to_string.py

@@ -0,0 +1,36 @@
+#
+# This file is part of Invenio.
+# Copyright (C) 2016-2018 CERN.
+#
+# Invenio is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
+
+"""Change FK GroupId to string"""
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "ab7c937cdd3f"
+down_revision = "a3f5a8635cbb"
+branch_labels = ()
+depends_on = "8f11b75e0995"
+
+
+def upgrade():
+    """Upgrade database."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index("ix_uq_partial_files_object_is_head", table_name="files_object")
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    """Downgrade database."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_index(
+        "ix_uq_partial_files_object_is_head",
+        "files_object",
+        ["bucket_id", "key"],
+        unique=False,
+    )
+    # ### end Alembic commands ###

invenio_communities/members/records/models.py

@@ -60,7 +60,7 @@ def user_id(cls):
     def group_id(cls):
         """Foreign key to the related group."""
         return db.Column(
-            db.Integer(),
+            db.String(80),
             db.ForeignKey(Role.id, ondelete="RESTRICT"),
             nullable=True,
         )