diff options
| -rw-r--r-- | activerecord/lib/active_record/base.rb | 3 | ||||
| -rw-r--r-- | activerecord/test/cases/finder_test.rb | 16 | ||||
| -rw-r--r-- | activerecord/test/cases/named_scope_test.rb | 17 | ||||
| -rw-r--r-- | railties/guides/source/active_record_querying.textile | 20 |
4 files changed, 54 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb index 616b5cc3b4..fe81c7dc2f 100644 --- a/activerecord/lib/active_record/base.rb +++ b/activerecord/lib/active_record/base.rb @@ -437,7 +437,8 @@ module ActiveRecord #:nodoc: self._attr_readonly = [] class << self # Class methods - delegate :find, :first, :last, :all, :destroy, :destroy_all, :exists?, :delete, :delete_all, :update, :update_all, :to => :scoped + delegate :find, :first, :first!, :last, :last!, :all, :exists?, :any?, :many?, :to => :scoped + delegate :destroy, :destroy_all, :delete, :delete_all, :update, :update_all, :to => :scoped delegate :find_each, :find_in_batches, :to => :scoped delegate :select, :group, :order, :except, :reorder, :limit, :offset, :joins, :where, :preload, :eager_load, :includes, :from, :lock, :readonly, :having, :create_with, :to => :scoped delegate :count, :average, :minimum, :maximum, :sum, :calculate, :to => :scoped diff --git a/activerecord/test/cases/finder_test.rb b/activerecord/test/cases/finder_test.rb index 316113634b..1ec00b15b2 100644 --- a/activerecord/test/cases/finder_test.rb +++ b/activerecord/test/cases/finder_test.rb @@ -208,6 +208,14 @@ class FinderTest < ActiveRecord::TestCase end end + def test_model_class_responds_to_first_bang + assert_equal topics(:first), Topic.first! + assert_raises ActiveRecord::RecordNotFound do + Topic.delete_all + Topic.first! + end + end + def test_last_bang_present assert_nothing_raised do assert_equal topics(:second), Topic.where("title = 'The Second Topic of the day'").last! @@ -220,6 +228,14 @@ class FinderTest < ActiveRecord::TestCase end end + def test_model_class_responds_to_last_bang + assert_equal topics(:fourth), Topic.last! + assert_raises ActiveRecord::RecordNotFound do + Topic.delete_all + Topic.last! + end + end + def test_unexisting_record_exception_handling assert_raise(ActiveRecord::RecordNotFound) { Topic.find(1).parent diff --git a/activerecord/test/cases/named_scope_test.rb b/activerecord/test/cases/named_scope_test.rb index fb050c3e52..9b20ea08de 100644 --- a/activerecord/test/cases/named_scope_test.rb +++ b/activerecord/test/cases/named_scope_test.rb @@ -64,7 +64,7 @@ class NamedScopeTest < ActiveRecord::TestCase assert Reply.scopes.include?(:base) assert_equal Reply.find(:all), Reply.base end - + def test_classes_dont_inherit_subclasses_scopes assert !ActiveRecord::Base.scopes.include?(:base) end @@ -246,6 +246,12 @@ class NamedScopeTest < ActiveRecord::TestCase assert_no_queries { assert topics.any? } end + def test_model_class_should_respond_to_any + assert Topic.any? + Topic.delete_all + assert !Topic.any? + end + def test_many_should_not_load_results topics = Topic.base assert_queries(2) do @@ -280,6 +286,15 @@ class NamedScopeTest < ActiveRecord::TestCase assert Topic.base.many? end + def test_model_class_should_respond_to_many + Topic.delete_all + assert !Topic.many? + Topic.create! + assert !Topic.many? + Topic.create! + assert Topic.many? + end + def test_should_build_on_top_of_scope topic = Topic.approved.build({}) assert topic.approved diff --git a/railties/guides/source/active_record_querying.textile b/railties/guides/source/active_record_querying.textile index 2c5d9e67e3..f3a10b8b92 100644 --- a/railties/guides/source/active_record_querying.textile +++ b/railties/guides/source/active_record_querying.textile @@ -962,6 +962,26 @@ Client.exists? The above returns +false+ if the +clients+ table is empty and +true+ otherwise. +You can also use +any?+ and +many?+ to check for existence on a model or relation. + +<ruby> +# via a model +Post.any? +Post.many? + +# via a named scope +Post.recent.any? +Post.recent.many? + +# via a relation +Post.where(:published => true).any? +Post.where(:published => true).many? + +# via an association +Post.first.categories.any? +Post.first.categories.many? +</ruby> + h3. Calculations This section uses count as an example method in this preamble, but the options described apply to all sub-sections. |