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shop_id当他们单击添加按钮时， 我正在尝试更新用户的。

调用的控制器方法是这样的：

def update_shop
  @user = User.find(params[:id])
  @shop = Shop.find(params[:shop_id])
  @user.update_attribute(:shop_id, params[:shop_id])
  flash[:success] = "Added Shop!"
  redirect_to @shop
end

单击按钮时的服务器读取：

Started POST "/updateshop?id=3&shop_id=1" for ::1 at 2015-08-31 05:50:52 -0500
Processing by UsersController#update_shop as HTML
  Parameters: {"authenticity_token"=>"jRozldw1u3TrWhaL6CeJyw4Tm5V5S/IFEQQulRkuV1Ot85kmPOsMa2jH2L6m8EFDpy7Ygc9SMBvPLJCuosHXUg==", "id"=>"3", "shop_id"=>"1"}
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 3]]
  Shop Load (0.1ms)  SELECT  "shops".* FROM "shops" WHERE "shops"."id" = ? LIMIT 1  [["id", 1]]
   (0.1ms)  begin transaction
  SQL (0.3ms)  UPDATE "users" SET "shop_id" = ?, "updated_at" = ? WHERE "users"."id" = ?  [["shop_id", 1], ["updated_at", "2015-08-31 10:50:52.089826"], ["id", 3]]
   (5.8ms)  commit transaction

但它实际上并没有更新 User.shop_id 有时它没有更新行，并显示：

Started POST "/updateshop?id=3&shop_id=1" for ::1 at 2015-08-31 05:56:54 -0500
Processing by UsersController#update_shop as HTML
  Parameters: {"authenticity_token"=>"D1ODlfDnhJmQ9NUfh+GL2JE747nJC2t4eqOziRGNCaUvuikmEDkzhhNpGyrJNkNQOAagrX8SqWakiw2yqmKJpA==", "id"=>"3", "shop_id"=>"1"}
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 3]]
  Shop Load (0.1ms)  SELECT  "shops".* FROM "shops" WHERE "shops"."id" = ? LIMIT 1  [["id", 1]]
   (0.1ms)  begin transaction
   (0.1ms)  commit transaction

参数传递正确，我认为update_attribute是正确的，出了什么问题？

4

1 回答 1

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该值已分配，这就是它未更新的原因。我的意思是，没有实际的变化，这就是为什么没有发布 UPDATE 语句的原因。

于 2015-08-31T11:14:09.963 回答