How cat I get list of validations defined in model Example: class ModelName validates_presence_of :field_name
I\'m working on a rails3 app and开发者_StackOverflow中文版 I\'m a little bit confused with Active Model.
class User include ActiveModel::Validations validates_presense_of :first_name validates_length_of :last_name, :in开发者_Python百科 => 3..20, :too_long => \"pick a shorter last name\", :too_short
Where are the default validation error messages in Rails 3.0? What is the equivalent of ActiveRecord开发者_高级运维::Error.default_error_messages[:taken], for example? I have gotten as far as finding
I don\'t understand why the following is not working in Rails 3. I\'m getting \"undefined local variable or method `custom_message\'\" error.
I published an article on disabling ActiveModel callbacks, but I’m not completely sure this is the prettiest way to开发者_C百科 do something like this.
I\'m using Rails 3 w/ Mongoid, (so no ActiveRecord). Mongoid uses ActiveModel\'s \"to_json\" method, and by default that method includes the root object in the JSON (which I don\'t want).
I am using ActiveRecord in Rails 3 to pull data from two different tables in two different databases.These databases can not join on each other, but I have the need to do a simple join after-the-fact.
Any chance the 2nd and 3rd lines can be combined in an one-liner and hopefully save one valuable开发者_如何学编程?
Given the following class definition in ruby: class Conversation class Message include ActiveModel::Validations
加载中,请稍侯......