Methods

Included Modules

  • Comparable

Attributes

[RW] cache_key
[RW] collection
[RW] element
[RW] i18n_key
[RW] name
[RW] param_key
[RW] plural
[RW] route_key
[RW] singular
[RW] singular_route_key

Class Public methods

new(klass, namespace = nil, name = nil)

Returns a new ActiveModel::Name instance. By default, the namespace and name option will take the namespace and name of the given class respectively.

module Foo
  class Bar
  end
end

ActiveModel::Name.new(Foo::Bar).to_s
# => "Foo::Bar"
📝 Source code 
# File activemodel/lib/active_model/naming.rb, line 164
    def initialize(klass, namespace = nil, name = nil)
      @name = name || klass.name

      raise ArgumentError, "Class name cannot be blank. You need to supply a name argument when anonymous class given" if @name.blank?

      @unnamespaced = @name.delete_prefix("#{namespace.name}::") if namespace
      @klass        = klass
      @singular     = _singularize(@name)
      @plural       = ActiveSupport::Inflector.pluralize(@singular)
      @element      = ActiveSupport::Inflector.underscore(ActiveSupport::Inflector.demodulize(@name))
      @human        = ActiveSupport::Inflector.humanize(@element)
      @collection   = ActiveSupport::Inflector.tableize(@name)
      @param_key    = (namespace ? _singularize(@unnamespaced) : @singular)
      @i18n_key     = @name.underscore.to_sym

      @route_key          = (namespace ? ActiveSupport::Inflector.pluralize(@param_key) : @plural.dup)
      @singular_route_key = ActiveSupport::Inflector.singularize(@route_key)
      @route_key << "_index" if @plural == @singular
    end
🔎 See on GitHub

Instance Public methods

!~(regexp)

Equivalent to String#!~. Match the class name against the given regexp. Returns true if there is no match, otherwise false.

class BlogPost
  extend ActiveModel::Naming
end

BlogPost.model_name !~ /Post/ # => false
BlogPost.model_name !~ /\d/   # => true
🔎 See on GitHub

<=>(other)

Equivalent to String#<=>.

class BlogPost
  extend ActiveModel::Naming
end

BlogPost.model_name <=> 'BlogPost'  # => 0
BlogPost.model_name <=> 'Blog'      # => 1
BlogPost.model_name <=> 'BlogPosts' # => -1
🔎 See on GitHub

==(other)

Equivalent to String#==. Returns true if the class name and other are equal, otherwise false.

class BlogPost
  extend ActiveModel::Naming
end

BlogPost.model_name == 'BlogPost'  # => true
BlogPost.model_name == 'Blog Post' # => false
🔎 See on GitHub

===(other)

Equivalent to #==.

class BlogPost
  extend ActiveModel::Naming
end

BlogPost.model_name === 'BlogPost'  # => true
BlogPost.model_name === 'Blog Post' # => false
🔎 See on GitHub

=~(regexp)

Equivalent to String#=~. Match the class name against the given regexp. Returns the position where the match starts or nil if there is no match.

class BlogPost
  extend ActiveModel::Naming
end

BlogPost.model_name =~ /Post/ # => 4
BlogPost.model_name =~ /\d/   # => nil
🔎 See on GitHub

eql?(other)

Equivalent to String#eql?. Returns true if the class name and other have the same length and content, otherwise false.

class BlogPost
  extend ActiveModel::Naming
end

BlogPost.model_name.eql?('BlogPost')  # => true
BlogPost.model_name.eql?('Blog Post') # => false
🔎 See on GitHub

human(options = {})

Transform the model name into a more human format, using I18n. By default, it will underscore then humanize the class name.

class BlogPost
  extend ActiveModel::Naming
end

BlogPost.model_name.human # => "Blog post"

Specify options with additional translating options.

📝 Source code 
# File activemodel/lib/active_model/naming.rb, line 194
    def human(options = {})
      return @human unless @klass.respond_to?(:lookup_ancestors) &&
                           @klass.respond_to?(:i18n_scope)

      defaults = @klass.lookup_ancestors.map do |klass|
        klass.model_name.i18n_key
      end

      defaults << options[:default] if options[:default]
      defaults << @human

      options = { scope: [@klass.i18n_scope, :models], count: 1, default: defaults }.merge!(options.except(:default))
      I18n.translate(defaults.shift, **options)
    end
🔎 See on GitHub

match?(regexp)

Equivalent to String#match?. Match the class name against the given regexp. Returns true if there is a match, otherwise false.

class BlogPost
  extend ActiveModel::Naming
end

BlogPost.model_name.match?(/Post/) # => true
BlogPost.model_name.match?(/\d/) # => false
🔎 See on GitHub

to_s()

Returns the class name.

class BlogPost
  extend ActiveModel::Naming
end

BlogPost.model_name.to_s # => "BlogPost"
🔎 See on GitHub

to_str()

Equivalent to to_s.

📝 Source code 
# File activemodel/lib/active_model/naming.rb, line 150
    delegate :==, :===, :<=>, :=~, :"!~", :eql?, :match?, :to_s,
             :to_str, :as_json, to: :name
🔎 See on GitHub