v0.30: product pages, categories, sale prices and order status timeline

migrations/005_categories_sale.sql

@@ -0,0 +1,24 @@
+-- Категории и цена со скидкой
+
+CREATE TABLE IF NOT EXISTS categories (
+    id          SERIAL PRIMARY KEY,
+    name        VARCHAR(100) NOT NULL UNIQUE,
+    slug        VARCHAR(100) NOT NULL UNIQUE,
+    description TEXT NOT NULL DEFAULT '',
+    sort_order  INT NOT NULL DEFAULT 0,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+ALTER TABLE products ADD COLUMN IF NOT EXISTS category_id INT REFERENCES categories(id) ON DELETE SET NULL;
+ALTER TABLE products ADD COLUMN IF NOT EXISTS sale_price NUMERIC(10, 2);
+
+INSERT INTO categories (name, slug, sort_order) VALUES
+    ('Электроника', 'elektronika', 1),
+    ('Одежда', 'odezhda', 2),
+    ('Дом и сад', 'dom-i-sad', 3),
+    ('Аксессуары', 'aksessuary', 4),
+    ('Разное', 'raznoe', 5)
+ON CONFLICT (slug) DO NOTHING;
+
+UPDATE products p SET category_id = c.id
+FROM categories c WHERE p.category = c.name AND p.category_id IS NULL;