24 lines
821 B
JavaScript
24 lines
821 B
JavaScript
/**
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* FIX-19: categories parent/child type.
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* Adds is_parent flag (container category). A CHILD is a leaf and cannot
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* contain children; only PARENT categories can contain other categories.
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*/
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/** @param {import('node-pg-migrate'). MigrationBuilder} pgm */
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export const up = (pgm) => {
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pgm.sql(`ALTER TABLE categories_categories ADD COLUMN is_parent boolean NOT NULL DEFAULT false`);
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// Migration rule: categories that already have children become parents.
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pgm.sql(`
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UPDATE categories_categories c
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SET is_parent = true
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WHERE EXISTS (
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SELECT 1 FROM categories_categories ch WHERE ch.parent_id = c.id
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)
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`);
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};
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/** @param {import('node-pg-migrate').MigrationBuilder} pgm */
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export const down = (pgm) => {
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pgm.sql('ALTER TABLE categories_categories DROP COLUMN IF EXISTS is_parent');
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};
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