DB migration for sample sheets.

lib/galaxy/model/migrations/alembic/versions_gxy/ec25b23b08e2_implement_sample_sheets.py

@@ -0,0 +1,37 @@
+"""Implement sample sheets.
+
+Revision ID: ec25b23b08e2
+Revises: 75348cfb3715
+Create Date: 2024-12-09 10:28:54.902847
+
+"""
+
+from sqlalchemy import Column
+
+from galaxy.model.custom_types import JSONType
+from galaxy.model.migrations.util import (
+    add_column,
+    drop_column,
+    transaction,
+)
+
+# revision identifiers, used by Alembic.
+revision = "ec25b23b08e2"
+down_revision = "75348cfb3715"
+branch_labels = None
+depends_on = None
+
+dataset_collection_element_table = "dataset_collection_element"
+dataset_collection_table = "dataset_collection"
+
+
+def upgrade():
+    with transaction():
+        add_column(dataset_collection_table, Column("column_definitions", JSONType(), default=None))
+        add_column(dataset_collection_element_table, Column("columns", JSONType(), default=None))
+
+
+def downgrade():
+    with transaction():
+        drop_column(dataset_collection_table, "column_definitions")
+        drop_column(dataset_collection_element_table, "columns")