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Class: ActiveModel::Validations::AcceptanceValidator::LazilyDefineAttributes

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::Module
Instance Chain:
self, ::Module, ::Module::Concerning
Inherits: Module
  • ::Object
Defined in: activemodel/lib/active_model/validations/acceptance.rb

Class Attribute Summary

::Module - Inherited

.attr_internal_naming_format, .attr_internal_naming_format=

Class Method Summary

Instance Attribute Summary

::Module - Inherited

#anonymous?

A module may or may not have a name.

Instance Method Summary

::Module - Inherited

#alias_attribute

Allows you to make aliases for attributes, which includes getter, setter, and a predicate.
#attr_internal

Alias for Module#attr_internal_accessor.
#attr_internal_accessor

Declares an attribute reader and writer backed by an internally-named instance variable.
#attr_internal_reader

Declares an attribute reader backed by an internally-named instance variable.
#attr_internal_writer

Declares an attribute writer backed by an internally-named instance variable.
#cattr_accessor

Alias for Module#mattr_accessor.
#cattr_reader

Alias for Module#mattr_reader.
#cattr_writer

Alias for Module#mattr_writer.
#deep_dup

Returns a copy of module or class if it’s anonymous.
#delegate

Provides a delegate class method to easily expose contained objects’ public methods as your own.
#delegate_missing_to

When building decorators, a common pattern may emerge:
#deprecate

deprecate :foo, deprecator: MyLib.deprecator
#mattr_accessor

Defines both class and instance accessors for class attributes.
#mattr_reader

Defines a class attribute and creates a class and instance reader methods.
#mattr_writer

Defines a class attribute and creates a class and instance writer methods to allow assignment to the attribute.
#module_parent

Returns the module which contains this one according to its name.
#module_parent_name

Returns the name of the module containing this one.
#module_parents

Returns all the parents of this module according to its name, ordered from nested outwards.
#redefine_method

Replaces the existing method definition, if there is one, with the passed block as its body.
#redefine_singleton_method

Replaces the existing singleton method definition, if there is one, with the passed block as its body.
#remove_possible_method

Removes the named method, if it exists.
#remove_possible_singleton_method

Removes the named singleton method, if it exists.
#silence_redefinition_of_method

Marks the named method as intended to be redefined, if it exists.
#thread_cattr_accessor

Alias for Module#thread_mattr_accessor.
#thread_cattr_reader

Alias for Module#thread_mattr_reader.
#thread_cattr_writer

Alias for Module#thread_mattr_writer.
#thread_mattr_accessor

Defines both class and instance accessors for class attributes.

::Module::Concerning - Included

#concern

A low-cruft shortcut to define a concern.
#concerning

Define a new concern and mix it in.

Constructor Details

.new(attributes) ⇒ LazilyDefineAttributes

[ GitHub ] 

  


# File 'activemodel/lib/active_model/validations/acceptance.rb', line 28



def initialize(attributes)
  @attributes = attributes.map(&:to_s)
end


  







Instance Method Details



  

    #==(other)  
  

  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/validations/acceptance.rb', line 73



def ==(other)
  self.class == other.class && attributes == other.attributes
end


  








  

    #define_on(klass)  
  

  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/validations/acceptance.rb', line 56



def define_on(klass)
  @lock&.synchronize do
    return unless @lock

    attr_readers = attributes.reject { |name| klass.attribute_method?(name) }
    attr_writers = attributes.reject { |name| klass.attribute_method?("#{name}=") }

    attr_reader(*attr_readers)
    attr_writer(*attr_writers)

    remove_method :respond_to_missing?
    remove_method :method_missing

    @lock = nil
  end
end


  








  

    #included(klass)  
  

  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/validations/acceptance.rb', line 32



def included(klass)
  @lock = Mutex.new
  mod = self

  define_method(:respond_to_missing?) do |method_name, include_private = false|
    mod.define_on(klass)
    super(method_name, include_private) || mod.matches?(method_name)
  end

  define_method(:method_missing) do |method_name, *args, &block|
    mod.define_on(klass)
    if mod.matches?(method_name)
      send(method_name, *args, &block)
    else
      super(method_name, *args, &block)
    end
  end
end


  








  

    #matches?(method_name)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/validations/acceptance.rb', line 51



def matches?(method_name)
  attr_name = method_name.to_s.chomp("=")
  attributes.any? { |name| name == attr_name }
end