Create new migration to convert column type of defense_component from

string to array

alembic/versions/02ac8bdcf16f_update_portfolios_defense_component_.py

@@ -0,0 +1,36 @@
+"""update portfolios defense component column type
+
+Revision ID: 02ac8bdcf16f
+Revises: 08f2a640e9c2
+Create Date: 2019-12-26 16:10:54.366461
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = '02ac8bdcf16f' # pragma: allowlist secret
+down_revision = '08f2a640e9c2' # pragma: allowlist secret
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('portfolios', 'defense_component',
+               type_=postgresql.ARRAY(sa.VARCHAR()),
+               existing_type=sa.VARCHAR(),
+               postgresql_using="string_to_array(defense_component, ',')::character varying[]",
+               nullable=False)
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('portfolios', 'defense_component',
+               type_=sa.VARCHAR(),
+               existing_type=postgresql.ARRAY(sa.VARCHAR()),
+               postgresql_using="defense_component[1]::character varying",
+               nullable=False)
+    # ### end Alembic commands ###