Create Request.creator relationship

- Rename creator_id to user_id

alembic/versions/05d6272bdb43_rename_request_creator_.py

@@ -0,0 +1,43 @@
+"""rename request creator
+
+Revision ID: 05d6272bdb43
+Revises: 77b065750596
+Create Date: 2018-08-07 20:21:22.559283
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = '05d6272bdb43'
+down_revision = '77b065750596'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    db = op.get_bind()
+
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('requests', sa.Column('user_id', postgresql.UUID(as_uuid=True), nullable=True))
+    op.create_foreign_key('requests_user_id_fk', 'requests', 'users', ['user_id'], ['id'])
+    # ### end Alembic commands ###
+
+    db.execute("UPDATE requests SET user_id = creator")
+
+    op.alter_column('requests', 'user_id', nullable=False)
+    op.drop_column('requests', 'creator')
+
+
+
+def downgrade():
+    db = op.get_bind()
+
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('requests', sa.Column('creator', postgresql.UUID(), autoincrement=False, nullable=True))
+    op.drop_constraint('requests_user_id_fk', 'requests', type_='foreignkey')
+    # ### end Alembic commands ###
+
+    db.execute("UPDATE requests SET creator = user_id")
+    op.drop_column('requests', 'user_id')