Chengdong ZhangandCursor
6c1357ec4d
Replace mall fixture favorites with customer-scoped endpoints, and send signed-out shoppers back to the page they left after sign-in. Co-authored-by: Cursor <cursoragent@cursor.com>
26 lines
1020 B
SQL
26 lines
1020 B
SQL
-- Customer favorites: one row per (user, product) or (user, shop).
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-- Two nullable FKs plus a check keep the target shape honest; partial unique
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-- indexes enforce uniqueness without letting NULL shop/product repeat.
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CREATE TABLE favorites (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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user_id UUID NOT NULL REFERENCES users (id) ON DELETE CASCADE,
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product_id UUID REFERENCES products (id) ON DELETE CASCADE,
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shop_id UUID REFERENCES shops (id) ON DELETE CASCADE,
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created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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CONSTRAINT favorites_exactly_one_target CHECK (
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(product_id IS NOT NULL AND shop_id IS NULL)
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OR (product_id IS NULL AND shop_id IS NOT NULL)
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)
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);
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CREATE INDEX favorites_user_created_idx ON favorites (user_id, created_at DESC);
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CREATE UNIQUE INDEX favorites_user_product_idx
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ON favorites (user_id, product_id)
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WHERE product_id IS NOT NULL;
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CREATE UNIQUE INDEX favorites_user_shop_idx
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ON favorites (user_id, shop_id)
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WHERE shop_id IS NOT NULL;
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