Question

这就是我做的事情

Customer.all

  Customer Load (0.6ms)  SELECT "customers".* FROM "customers"
 => #<ActiveRecord::Relation [#<Customer id: 1, name: "Judy Ngai", created_at: "2013-08-13 18:50:02", updated_at: "2013-08-13 18:50:02", phone_number: nil>]>

然后

judy = Customer.find(1) 
insertdata = judy.phone_number = "1234567890"
insertdata.save!
or 
insertdata.save

给了我

NoMethodError: undefined method `save' for "6265607524":String
NoMethodError: undefined method `save!' for "6265607524":String

我该怎么办？

Answer 1

judy = Customer.find(1) 
judy.phone_number = "1234567890"
judy.save!

Answer 2

我更喜欢像这样使用.update_attribute：

judy = Customer.find(1)
judy.update_attributes(:phone_number, "1234567890")

如果您使用update_attributes，它也会执行验证（= / save不执行验证）。有关分配属性的不同方式列表，请查看5 Ways to set Attributes in ActiveRecord

Rails控制台将数据插入记录

2 个答案: