即使输入数据，Rails 验证也会失败
以下是我在 Rails Console 中执行的命令：
Person.create!(:firstName=>"matt", :lastName=>"master", :gender => 1)
我的结果是此错误消息：
ActiveRecord::RecordInvalid: Validation failed: Firstname can't be blank
我的模型验证代码如下所示：
class Person < ActiveRecord::Base
belongs_to :user, :class_name => 'User', :foreign_key => 'fk_ssmUserId'
validates_presence_of :firstName, :lastName
当我注释掉 validates_presence_of 时，一切正常，并且我的数据已正确输入到数据库，所以我知道这些值实际上被传递到新对象中。我什至检查了 Rails::ActiveRecord::Validations 代码中创建的新对象，以确保它在保存之前已正确实例化。是的。另外，我还有其他带有 validates_presence_of 的模型，每次都能 100% 正常工作。这只是这一种型号。我正在使用 Rails 3.1.0.rc1。
有什么想法吗？
谢谢！
Here is the command that I'm executing in Rails Console:
Person.create!(:firstName=>"matt", :lastName=>"master", :gender => 1)
My result is this error message:
ActiveRecord::RecordInvalid: Validation failed: Firstname can't be blank
My model validation code looks as such:
class Person < ActiveRecord::Base
belongs_to :user, :class_name => 'User', :foreign_key => 'fk_ssmUserId'
validates_presence_of :firstName, :lastName
When I comment out validates_presence_of everything works and my data is entered properly into the database, so I know that the values are actually being passed into the new object. I even inspected the new object created inside the Rails::ActiveRecord::Validations code to make sure it was being instantiated correctly before being saved. It was. Also, I have other models with validates_presence_of that work 100% fine every time. It's just this one model. I am using Rails 3.1.0.rc1.
Any ideas?
Thanks!
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检查该键是否与您的模型列相对应。似乎一切都应该好起来。
check that the key correspond to your model columns. Seems to be everything should be fine.
我怀疑此错误与您使用 .create! 方法从控制台创建和保存对象有关。您的 Person 类似乎需要一个外键，当您在控制台创建对象时，该值可能不会被实例化。要测试这一点，请尝试
在 .create 方法之后键入：，不带任何感叹号。这不应产生错误。现在输入：
很可能您已将所需的键值设置为“nil”，并且在您填写适当的值之前无法从控制台保存该对象。
I have a suspicion that this error relates to the fact that you're creating and saving the object using the .create! method from the console. Your Person class appears to require a foreign key, a value which is probably not being instantiated when you create an object at the console. To test this, try typing:
with no bang after the .create method. This should not generate an error. Now type:
It's very likely that you have required key values set as "nil" and that the object can't be saved from console until you fill in the appropriate values.