Add long description to collections

migrations/versions/20f2aa2f40b9_.py

@@ -0,0 +1,25 @@
+"""empty message
+
+Revision ID: 20f2aa2f40b9
+Revises: 89dfa0043f9c
+Create Date: 2023-08-19 01:35:20.100549
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = '20f2aa2f40b9'
+down_revision = '89dfa0043f9c'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('collection', sa.Column('long_description', sa.UnicodeText(), nullable=True, server_default=None))
+
+
+def downgrade():
+    with op.batch_alter_table('collection', schema=None) as batch_op:
+        batch_op.drop_column('long_description')