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update ActiveModel::AttributeMethods documentation [ci skip]

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Francesco Rodriguez 2012-06-21 12:26:14 -05:00
parent 84213613c3
commit bf3332bfdf
1 changed files with 20 additions and 27 deletions
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47
activemodel/lib/active_model/attribute_methods.rb
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@ -7,28 +7,27 @@ module ActiveModel
end
# == Active Model Attribute Methods
#
# <tt>ActiveModel::AttributeMethods</tt> provides a way to add prefixes and suffixes
# to your methods as well as handling the creation of Active Record like class methods
# such as +table_name+.
# <tt>ActiveModel::AttributeMethods</tt> provides a way to add prefixes and
# suffixes to your methods as well as handling the creation of Active Record
# like class methods such as +table_name+.
#
# The requirements to implement ActiveModel::AttributeMethods are to:
#
# * <tt>include ActiveModel::AttributeMethods</tt> in your object
# * <tt>include ActiveModel::AttributeMethods</tt> in your object.
# * Call each Attribute Method module method you want to add, such as
# attribute_method_suffix or attribute_method_prefix
# * Call <tt>define_attribute_methods</tt> after the other methods are
# called.
# * Define the various generic +_attribute+ methods that you have declared
# +attribute_method_suffix+ or +attribute_method_prefix+.
# * Call +define_attribute_methods+ after the other methods are called.
# * Define the various generic +_attribute+ methods that you have declared.
#
# A minimal implementation could be:
#
# class Person
# include ActiveModel::AttributeMethods
#
# attribute_method_affix :prefix => 'reset_', :suffix => '_to_default!'
# attribute_method_affix prefix: 'reset_', suffix: '_to_default!'
# attribute_method_suffix '_contrived?'
# attribute_method_prefix 'clear_'
# define_attribute_methods 'name'
# define_attribute_methods :name
#
# attr_accessor :name
#
@ -43,12 +42,12 @@ module ActiveModel
# end
#
# def reset_attribute_to_default!(attr)
# send("#{attr}=", "Default Name")
# send("#{attr}=", 'Default Name')
# end
# end
#
# Note that whenever you include ActiveModel::AttributeMethods in your class,
# it requires you to implement an <tt>attributes</tt> method which returns a hash
# it requires you to implement an +attributes+ method which returns a hash
# with each attribute name in your model as hash key and the attribute value as
# hash value.
#
@ -78,8 +77,6 @@ module ActiveModel
# An instance method <tt>#{prefix}attribute</tt> must exist and accept
# at least the +attr+ argument.
#
# For example:
#
# class Person
#
# include ActiveModel::AttributeMethods
@ -95,7 +92,7 @@ module ActiveModel
# end
#
# person = Person.new
# person.name = "Bob"
# person.name = 'Bob'
# person.name # => "Bob"
# person.clear_name
# person.name # => nil
@ -113,10 +110,8 @@ module ActiveModel
#
# attribute#{suffix}(#{attr}, *args, &block)
#
# An <tt>attribute#{suffix}</tt> instance method must exist and accept at least
# the +attr+ argument.
#
# For example:
# An <tt>attribute#{suffix}</tt> instance method must exist and accept at
# least the +attr+ argument.
#
# class Person
#
@ -133,7 +128,7 @@ module ActiveModel
# end
#
# person = Person.new
# person.name = "Bob"
# person.name = 'Bob'
# person.name # => "Bob"
# person.name_short? # => true
def attribute_method_suffix(*suffixes)
@ -154,13 +149,11 @@ module ActiveModel
# An <tt>#{prefix}attribute#{suffix}</tt> instance method must exist and
# accept at least the +attr+ argument.
#
# For example:
#
# class Person
#
# include ActiveModel::AttributeMethods
# attr_accessor :name
# attribute_method_affix :prefix => 'reset_', :suffix => '_to_default!'
# attribute_method_affix prefix: 'reset_', suffix: '_to_default!'
# define_attribute_methods :name
#
# private
@ -188,7 +181,7 @@ module ActiveModel
# end
#
# person = Person.new
# person.nickname = "Bob"
# person.nickname = 'Bob'
# person.nickname # => "Bob"
# person.name # => "Bob"
def alias_attribute(new_name, old_name)
@ -202,9 +195,9 @@ module ActiveModel
# Declares the attributes that should be prefixed and suffixed by
# ActiveModel::AttributeMethods.
#
# To use, pass in an array of attribute names (as strings or symbols),
# be sure to declare +define_attribute_methods+ after you define any
# prefix, suffix or affix methods, or they will not hook in.
# To use, pass attribute names (as strings or symbols), be sure to declare
# +define_attribute_methods+ after you define any prefix, suffix or affix
# methods, or they will not hook in.
#
# class Person
#