Add reviews

Fixes #173

migrations/versions/4f2e19bc2a27_.py

@@ -0,0 +1,40 @@
+"""empty message
+
+Revision ID: 4f2e19bc2a27
+Revises: dd27f1311a90
+Create Date: 2020-07-09 00:35:35.066719
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '4f2e19bc2a27'
+down_revision = 'dd27f1311a90'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('package_review',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('package_id', sa.Integer(), nullable=True),
+    sa.Column('author_id', sa.Integer(), nullable=False),
+    sa.Column('recommends', sa.Boolean(), nullable=False),
+    sa.ForeignKeyConstraint(['author_id'], ['user.id'], ),
+    sa.ForeignKeyConstraint(['package_id'], ['package.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.add_column('thread', sa.Column('review_id', sa.Integer(), nullable=True))
+    op.create_foreign_key(None, 'thread', 'package_review', ['review_id'], ['id'])
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'thread', type_='foreignkey')
+    op.drop_column('thread', 'review_id')
+    op.drop_table('package_review')
+    # ### end Alembic commands ###