module ActiveModel::Naming
Active Model Naming¶ ↑
Creates a model_name
method on your object.
To implement, just extend ActiveModel::Naming in your object:
class BookCover extend ActiveModel::Naming end BookCover.model_name.name # => "BookCover" BookCover.model_name.human # => "Book cover" BookCover.model_name.i18n_key # => :book_cover BookModule::BookCover.model_name.i18n_key # => :"book_module/book_cover"
Providing the functionality that ActiveModel::Naming provides in your object is required to pass the Active Model Lint test. So either extending the provided method below, or rolling your own is required.
Public Class Methods
Returns string to use for params names. It differs for namespaced models regarding whether it's inside isolated engine.
# For isolated engine: ActiveModel::Naming.param_key(Blog::Post) # => "post" # For shared engine: ActiveModel::Naming.param_key(Blog::Post) # => "blog_post"
# File lib/active_model/naming.rb, line 302 def self.param_key(record_or_class) model_name_from_record_or_class(record_or_class).param_key end
Returns the plural class name of a record or class.
ActiveModel::Naming.plural(post) # => "posts" ActiveModel::Naming.plural(Highrise::Person) # => "highrise_people"
# File lib/active_model/naming.rb, line 247 def self.plural(record_or_class) model_name_from_record_or_class(record_or_class).plural end
Returns string to use while generating route names. It differs for namespaced models regarding whether it's inside isolated engine.
# For isolated engine: ActiveModel::Naming.route_key(Blog::Post) # => "posts" # For shared engine: ActiveModel::Naming.route_key(Blog::Post) # => "blog_posts"
The route key also considers if the noun is uncountable and, in such cases, automatically appends _index.
# File lib/active_model/naming.rb, line 290 def self.route_key(record_or_class) model_name_from_record_or_class(record_or_class).route_key end
Returns the singular class name of a record or class.
ActiveModel::Naming.singular(post) # => "post" ActiveModel::Naming.singular(Highrise::Person) # => "highrise_person"
# File lib/active_model/naming.rb, line 255 def self.singular(record_or_class) model_name_from_record_or_class(record_or_class).singular end
Returns string to use while generating route names. It differs for namespaced models regarding whether it's inside isolated engine.
# For isolated engine: ActiveModel::Naming.singular_route_key(Blog::Post) # => "post" # For shared engine: ActiveModel::Naming.singular_route_key(Blog::Post) # => "blog_post"
# File lib/active_model/naming.rb, line 275 def self.singular_route_key(record_or_class) model_name_from_record_or_class(record_or_class).singular_route_key end
Identifies whether the class name of a record or class is uncountable.
ActiveModel::Naming.uncountable?(Sheep) # => true ActiveModel::Naming.uncountable?(Post) # => false
# File lib/active_model/naming.rb, line 263 def self.uncountable?(record_or_class) plural(record_or_class) == singular(record_or_class) end
Public Instance Methods
Returns an ActiveModel::Name object for module. It can be used to retrieve all kinds of naming-related information (See ActiveModel::Name for more information).
class Person include ActiveModel::Model end Person.model_name.name # => "Person" Person.model_name.class # => ActiveModel::Name Person.model_name.singular # => "person" Person.model_name.plural # => "people"
# File lib/active_model/naming.rb, line 234 def model_name @_model_name ||= begin namespace = self.parents.detect do |n| n.respond_to?(:use_relative_model_naming?) && n.use_relative_model_naming? end ActiveModel::Name.new(self, namespace) end end