Base class for AggregateReflection and AssociationReflection. Objects of AggregateReflection and AssociationReflection are returned by the Reflection::ClassMethods.

Methods

Attributes

[R] active_record
[R] name

Returns the name of the macro.

composed_of :balance, class_name: 'Money' returns :balance has_many :clients returns :clients
[R] options

Returns the hash of options used for the macro.

composed_of :balance, class_name: 'Money' returns { class_name: "Money" } has_many :clients returns {}
[R] scope

Class Public methods

new(name, scope, options, active_record)

📝 Source code 
# File activerecord/lib/active_record/reflection.rb, line 396
      def initialize(name, scope, options, active_record)
        super()
        @name          = name
        @scope         = scope
        @options       = normalize_options(options)
        @active_record = active_record
        @klass         = options[:anonymous_class]
        @plural_name   = active_record.pluralize_table_names ?
                            name.to_s.pluralize : name.to_s
      end
🔎 See on GitHub

Instance Public methods

==(other_aggregation)

Returns true if self and other_aggregation have the same name attribute, active_record attribute, and other_aggregation has an options hash assigned to it.

📝 Source code 
# File activerecord/lib/active_record/reflection.rb, line 444
      def ==(other_aggregation)
        super ||
          other_aggregation.kind_of?(self.class) &&
          name == other_aggregation.name &&
          !other_aggregation.options.nil? &&
          active_record == other_aggregation.active_record
      end
🔎 See on GitHub

autosave=(autosave)

📝 Source code 
# File activerecord/lib/active_record/reflection.rb, line 407
      def autosave=(autosave)
        @options[:autosave] = autosave
        parent_reflection = self.parent_reflection
        if parent_reflection
          parent_reflection.autosave = autosave
        end
      end
🔎 See on GitHub

compute_class(name)

📝 Source code 
# File activerecord/lib/active_record/reflection.rb, line 434
      def compute_class(name)
        name.constantize
      end
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klass()

Returns the class for the macro.

composed_of :balance, class_name: 'Money' returns the Money class has_many :clients returns the Client class

class Company < ActiveRecord::Base
  has_many :clients
end

Company.reflect_on_association(:clients).klass
# => Client

Note: Do not call klass.new or klass.create to instantiate a new association object. Use build_association or create_association instead. This allows plugins to hook into association object creation.

📝 Source code 
# File activerecord/lib/active_record/reflection.rb, line 430
      def klass
        @klass ||= compute_class(compute_name(class_name))
      end
🔎 See on GitHub

scope_for(relation, owner = nil)

📝 Source code 
# File activerecord/lib/active_record/reflection.rb, line 452
      def scope_for(relation, owner = nil)
        relation.instance_exec(owner, &scope) || relation
      end
🔎 See on GitHub