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Merge pull request #13442 from aditya-kapoor/update-docs

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Updated documentation for Attribute Methods [ci skip]
This commit is contained in:
Godfrey Chan 2013-12-26 02:02:53 -08:00
commit 87323487ce
1 changed files with 11 additions and 16 deletions
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25
activemodel/lib/active_model/attribute_methods.rb
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@ -14,11 +14,11 @@ module ActiveModel
class MissingAttributeError < NoMethodError
end
# == Active Model Attribute Methods
# == 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
# <tt>ActiveRecord::Base</tt>-like class methods such as +table_name+.
# Provides a way to add prefixes and suffixes to your methods as
# well as handling the creation of <tt>ActiveRecord::Base</tt>-like
# class methods such as +table_name+.
#
# The requirements to implement <tt>ActiveModel::AttributeMethods</tt> are to:
#
@ -27,7 +27,9 @@ module ActiveModel
# or +attribute_method_prefix+.
# * Call +define_attribute_methods+ after the other methods are called.
# * Define the various generic +_attribute+ methods that you have declared.
# * Define an +attributes+ method, see below.
# * Define an +attributes+ method which returns a hash with each
# attribute name in your model as hash key and the attribute value as hash value.
# Hash keys must be strings.
#
# A minimal implementation could be:
#
@ -59,13 +61,6 @@ module ActiveModel
# send("#{attr}=", 'Default Name')
# end
# end
#
# Note that whenever you include <tt>ActiveModel::AttributeMethods</tt> in
# your class, 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.
#
# Hash keys must be strings.
module AttributeMethods
extend ActiveSupport::Concern
@ -173,14 +168,14 @@ module ActiveModel
# private
#
# def reset_attribute_to_default!(attr)
# ...
# send("#{attr}=", 'Default Name')
# end
# end
#
# person = Person.new
# person.name # => 'Gem'
# person.reset_name_to_default!
# person.name # => 'Gemma'
# person.name # => 'Default Name'
def attribute_method_affix(*affixes)
self.attribute_method_matchers += affixes.map! { |affix| AttributeMethodMatcher.new prefix: affix[:prefix], suffix: affix[:suffix] }
undefine_attribute_methods
@ -250,7 +245,7 @@ module ActiveModel
# private
#
# def clear_attribute(attr)
# ...
# send("#{attr}", nil)
# end
# end
def define_attribute_methods(*attr_names)