Add m2m corpus-follower table

migrations/versions/5fe6a6c7870c_.py

@@ -0,0 +1,36 @@
+"""empty message
+
+Revision ID: 5fe6a6c7870c
+Revises: 5b2a6e590166
+Create Date: 2023-01-23 08:27:10.169454
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '5fe6a6c7870c'
+down_revision = '5b2a6e590166'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('corpus_follower_associations',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('following_user_id', sa.Integer(), nullable=True),
+    sa.Column('followed_corpus_id', sa.Integer(), nullable=True),
+    sa.Column('permissions', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['followed_corpus_id'], ['corpora.id'], ),
+    sa.ForeignKeyConstraint(['following_user_id'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('corpus_follower_associations')
+    # ### end Alembic commands ###