Add a table mapping Teams to Projects

Change-Id: I4821d4d204a35abab6b43e1037424bdc5c9606a1

storyboard/db/migration/alembic_migrations/versions/065_associate_multiple_projects_with_teams.py

@@ -0,0 +1,51 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+
+"""Associate multiple projects with teams
+
+Revision ID: 065
+Revises: 064
+Create Date: 2019-03-07 11:25:31.308033
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '065'
+down_revision = '064'
+
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade(active_plugins=None, options=None):
+    op.create_table('project_teams',
+        sa.Column('project_id', sa.Integer(), nullable=False),
+        sa.Column('team_id', sa.Integer(), nullable=False),
+        sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ),
+        sa.ForeignKeyConstraint(['team_id'], ['teams.id'], )
+    )
+    dialect = op.get_bind().engine.dialect
+    if dialect.supports_alter:
+        op.drop_constraint('projects_ibfk_1', 'projects', type_='foreignkey')
+        op.drop_column('projects', 'team_id')
+
+
+def downgrade(active_plugins=None, options=None):
+    dialect = op.get_bind().engine.dialect
+    if dialect.supports_alter:
+        op.add_column('projects', sa.Column(
+            'team_id', sa.Integer(), autoincrement=False, nullable=True))
+        op.create_foreign_key(
+            'projects_ibfk_1', 'projects', 'teams', ['team_id'], ['id'])
+    op.drop_table('project_teams')

storyboard/db/models.py

@@ -217,6 +217,13 @@ class Team(ModelBuilder, Base):
                                backref="teams")
 
 
+project_teams = Table(
+    'project_teams', Base.metadata,
+    Column('project_id', Integer, ForeignKey('projects.id'), nullable=False),
+    Column('team_id', Integer, ForeignKey('teams.id'), nullable=False)
+)
+
+
 project_group_mapping = Table(
     'project_group_mapping', Base.metadata,
     Column('project_id', Integer, ForeignKey('projects.id')),
@@ -267,8 +274,7 @@ class Project(FullText, ModelBuilder, Base):
 
     name = Column(String(CommonLength.top_middle_length))
     description = Column(UnicodeText())
-    team_id = Column(Integer, ForeignKey('teams.id'))
+    teams = relationship(Team, secondary="project_teams", backref="projects")
-    team = relationship(Team, primaryjoin=team_id == Team.id)
     tasks = relationship('Task', backref='project')
     branches = relationship('Branch', backref='project')
     repo_url = Column(String(CommonLength.top_large_length), default=None)