diff options
Diffstat (limited to 'activerecord/lib/active_record/named_scope.rb')
| -rw-r--r-- | activerecord/lib/active_record/named_scope.rb | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/activerecord/lib/active_record/named_scope.rb b/activerecord/lib/active_record/named_scope.rb index 1f3ef300f2..1b22fa5e24 100644 --- a/activerecord/lib/active_record/named_scope.rb +++ b/activerecord/lib/active_record/named_scope.rb @@ -1,5 +1,10 @@ +require 'active_support/core_ext/array' +require 'active_support/core_ext/hash/except' + module ActiveRecord module NamedScope + extend ActiveSupport::Concern + # All subclasses of ActiveRecord::Base have one named scope: # * <tt>scoped</tt> - which allows for the creation of anonymous \scopes, on the fly: <tt>Shirt.scoped(:conditions => {:color => 'red'}).scoped(:include => :washing_instructions)</tt> # @@ -7,11 +12,8 @@ module ActiveRecord # intermediate values (scopes) around as first-class objects is convenient. # # You can define a scope that applies to all finders using ActiveRecord::Base.default_scope. - def self.included(base) - base.class_eval do - extend ClassMethods - named_scope :scoped, lambda { |scope| scope } - end + included do + named_scope :scoped, lambda { |scope| scope } end module ClassMethods @@ -107,14 +109,14 @@ module ActiveRecord class Scope attr_reader :proxy_scope, :proxy_options, :current_scoped_methods_when_defined - NON_DELEGATE_METHODS = %w(nil? send object_id class extend find size count sum average maximum minimum paginate first last empty? any? respond_to?).to_set + NON_DELEGATE_METHODS = %w(nil? send object_id class extend find size count sum average maximum minimum paginate first last empty? any? many? respond_to?).to_set [].methods.each do |m| unless m =~ /^__/ || NON_DELEGATE_METHODS.include?(m.to_s) delegate m, :to => :proxy_found end end - delegate :scopes, :with_scope, :to => :proxy_scope + delegate :scopes, :with_scope, :scoped_methods, :to => :proxy_scope def initialize(proxy_scope, options, &block) options ||= {} @@ -166,6 +168,15 @@ module ActiveRecord end end + # Returns true if the named scope has more than 1 matching record. + def many? + if block_given? + proxy_found.many? { |*block_args| yield(*block_args) } + else + size > 1 + end + end + protected def proxy_found @found || load_found @@ -178,7 +189,7 @@ module ActiveRecord else with_scope({:find => proxy_options, :create => proxy_options[:conditions].is_a?(Hash) ? proxy_options[:conditions] : {}}, :reverse_merge) do method = :new if method == :build - if current_scoped_methods_when_defined + if current_scoped_methods_when_defined && !scoped_methods.include?(current_scoped_methods_when_defined) with_scope current_scoped_methods_when_defined do proxy_scope.send(method, *args, &block) end |