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"""cascades |
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Revision ID: 3e9675b35dfc |
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Revises: cb568ec81000 |
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Create Date: 2020-08-12 14:48:35.592316 |
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""" |
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from alembic import op |
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# revision identifiers, used by Alembic. |
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revision = "3e9675b35dfc" |
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down_revision = "cb568ec81000" |
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def _get_convention(): |
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is_sqlite = op.get_bind().dialect.name == "sqlite" |
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return ( |
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{"fk": "FK_%(table_name)s_%(referred_table_name)s"} |
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if is_sqlite |
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else {"fk": "%(table_name)s_%(column_0_name)s_fkey"} |
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) |
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def upgrade(): |
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args = [ |
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("conceptscheme_source", "conceptscheme", "conceptscheme_id", "id"), |
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("conceptscheme_source", "source", "source_id", "id"), |
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("concept_source", "concept", "concept_id", "id"), |
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("concept_source", "source", "source_id", "id"), |
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("conceptscheme_language", "conceptscheme", "conceptscheme_id", "id"), |
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("match", "concept", "concept_id", "id"), |
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("label", "language", "language_id", "id"), |
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("note", "language", "language_id", "id"), |
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("collection_concept", "concept", "concept_id", "id"), |
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("collection_concept", "concept", "collection_id", "id"), |
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("conceptscheme_note", "conceptscheme", "conceptscheme_id", "id"), |
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("conceptscheme_label", "conceptscheme", "conceptscheme_id", "id"), |
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("visitation", "concept", "concept_id", "id"), |
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("visitation", "conceptscheme", "conceptscheme_id", "id"), |
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("concept_note", "concept", "concept_id", "id"), |
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("concept_note", "note", "note_id", "id"), |
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("concept_related_concept", "concept", "concept_id_from", "id"), |
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("concept_related_concept", "concept", "concept_id_to", "id"), |
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("concept_hierarchy_concept", "concept", "concept_id_narrower", "id"), |
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("concept_hierarchy_concept", "concept", "concept_id_broader", "id"), |
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("concept_hierarchy_collection", "concept", "concept_id_broader", "id"), |
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("concept_hierarchy_collection", "concept", "collection_id_narrower", "id"), |
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("concept_label", "concept", "concept_id", "id"), |
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("concept_label", "label", "label_id", "id"), |
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] |
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convention = _get_convention() |
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for source_table, referent_table, local_col, remote_col in args: |
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with op.batch_alter_table( |
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source_table, naming_convention=convention |
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) as batch_op: |
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constraint_name = convention["fk"] % { |
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"table_name": source_table, |
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"referred_table_name": referent_table, |
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"column_0_name": local_col, |
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} |
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batch_op.drop_constraint(constraint_name) |
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batch_op.create_foreign_key( |
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constraint_name, |
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referent_table, |
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[local_col], |
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[remote_col], |
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ondelete="cascade", |
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) |
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def downgrade(): |
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pass |
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OnroerendErfgoed /
atramhasis
