Ruby Rails overrides field properties for ActiveRecord::Base

In Ruby rails, if you want to save a property (or read a property), and you want to do something else when you save the property (or read a property)

You can use the method that overrides the property's setup or reader.

For example, a models table has a field called name, and you want to manipulate the name.

Method One,

Class Model < Activerecord::baseattr_accessible:namedef name= (value) # Actionswrite_attribute (: name,value) enddef Nameread_attribute (: Name) end

Method Two,

Similar to method one, facilitates After_find and Before_save methods

Specific examples please Baidu

Ruby Rails overrides field properties for ActiveRecord::Base