Raised when an error occured while doing a mass assignment to an attribute through the attributes= method. The exception has an attribute property that is the name of the offending attribute.

Methods
Attributes
[R] attribute
[R] exception
Public Class methods
new(message, exception, attribute)
     # File lib/active_record/base.rb, line 105
105:     def initialize(message, exception, attribute)
106:       @exception = exception
107:       @attribute = attribute
108:       @message = message
109:     end