add migration

migrations/versions/7670a05866_.py

+"""empty message
+
+Revision ID: 7670a05866
+Revises: 68688a3014
+Create Date: 2015-11-07 12:14:03.278207
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '7670a05866'
+down_revision = '68688a3014'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('topics',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(), nullable=True),
+    sa.Column('mode', sa.String(), nullable=True),
+    sa.Column('event_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['event_id'], ['events.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name')
+    )
+    op.drop_column('events', 'mode')
+    op.add_column('speakers', sa.Column('event_id', sa.Integer(), nullable=False))
+    op.drop_constraint('speakers_event_fkey', 'speakers', type_='foreignkey')
+    op.create_foreign_key(None, 'speakers', 'events', ['event_id'], ['id'])
+    op.drop_column('speakers', 'event')
+    op.add_column('statements', sa.Column('event_id', sa.Integer(), nullable=False))
+    op.add_column('statements', sa.Column('speaker_id', sa.Integer(), nullable=False))
+    op.drop_constraint('statements_event_fkey', 'statements', type_='foreignkey')
+    op.drop_constraint('statements_speaker_fkey', 'statements', type_='foreignkey')
+    op.create_foreign_key(None, 'statements', 'events', ['event_id'], ['id'])
+    op.create_foreign_key(None, 'statements', 'speakers', ['speaker_id'], ['id'])
+    op.drop_column('statements', 'event')
+    op.drop_column('statements', 'speaker')
+    ### end Alembic commands ###
+
+
+def downgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('statements', sa.Column('speaker', sa.INTEGER(), autoincrement=False, nullable=False))
+    op.add_column('statements', sa.Column('event', sa.INTEGER(), autoincrement=False, nullable=False))
+    op.drop_constraint(None, 'statements', type_='foreignkey')
+    op.drop_constraint(None, 'statements', type_='foreignkey')
+    op.create_foreign_key('statements_speaker_fkey', 'statements', 'speakers', ['speaker'], ['id'])
+    op.create_foreign_key('statements_event_fkey', 'statements', 'events', ['event'], ['id'])
+    op.drop_column('statements', 'speaker_id')
+    op.drop_column('statements', 'event_id')
+    op.add_column('speakers', sa.Column('event', sa.INTEGER(), autoincrement=False, nullable=False))
+    op.drop_constraint(None, 'speakers', type_='foreignkey')
+    op.create_foreign_key('speakers_event_fkey', 'speakers', 'events', ['event'], ['id'])
+    op.drop_column('speakers', 'event_id')
+    op.add_column('events', sa.Column('mode', sa.VARCHAR(), autoincrement=False, nullable=True))
+    op.drop_table('topics')
+    ### end Alembic commands ###