diff options
Diffstat (limited to 'activemodel/lib/active_model/attribute_methods.rb')
| -rw-r--r-- | activemodel/lib/active_model/attribute_methods.rb | 37 |
1 files changed, 15 insertions, 22 deletions
diff --git a/activemodel/lib/active_model/attribute_methods.rb b/activemodel/lib/active_model/attribute_methods.rb index 8d6d405e96..96be551264 100644 --- a/activemodel/lib/active_model/attribute_methods.rb +++ b/activemodel/lib/active_model/attribute_methods.rb @@ -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: # @@ -42,7 +44,7 @@ module ActiveModel # attr_accessor :name # # def attributes - # {'name' => @name} + # { 'name' => @name } # end # # private @@ -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) @@ -358,14 +353,12 @@ module ActiveModel @attribute_method_matchers_cache ||= ThreadSafe::Cache.new(initial_capacity: 4) end - def attribute_method_matcher(method_name) #:nodoc: + def attribute_method_matchers_matching(method_name) #:nodoc: attribute_method_matchers_cache.compute_if_absent(method_name) do # Must try to match prefixes/suffixes first, or else the matcher with no prefix/suffix # will match every time. matchers = attribute_method_matchers.partition(&:plain?).reverse.flatten(1) - match = nil - matchers.detect { |method| match = method.match(method_name) } - match + matchers.map { |method| method.match(method_name) }.compact end end @@ -474,8 +467,8 @@ module ActiveModel # Returns a struct representing the matching attribute method. # The struct's attributes are prefix, base and suffix. def match_attribute_method?(method_name) - match = self.class.send(:attribute_method_matcher, method_name) - match if match && attribute_method?(match.attr_name) + matches = self.class.send(:attribute_method_matchers_matching, method_name) + matches.detect { |match| attribute_method?(match.attr_name) } end def missing_attribute(attr_name, stack) |