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用issue记录我的博客
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同一个表里面字段互为唯一 #4

Open wangxinyun1995 opened 5 years ago

wangxinyun1995 commented 5 years ago

validates :sku, uniqueness: { scope: [:code], message: "sku和code互为唯一" }

索引也要添加

''' add_index "products", ["sku", "code"], name: "index_products_on_sku_and_code", unique: true, using: :btree

'''