diff options
Diffstat (limited to 'activerecord/lib/active_record/relation')
4 files changed, 8 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb index 75d983d3b8..31d99f0192 100644 --- a/activerecord/lib/active_record/relation/calculations.rb +++ b/activerecord/lib/active_record/relation/calculations.rb @@ -138,6 +138,7 @@ module ActiveRecord # Person.pluck('DATEDIFF(updated_at, created_at)') # # SELECT DATEDIFF(updated_at, created_at) FROM people # # => ['0', '27761', '173'] + # def pluck(column_name) if column_name.is_a?(Symbol) && column_names.include?(column_name.to_s) column_name = "#{table_name}.#{column_name}" diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb index 9d62e726d4..4fedd33d64 100644 --- a/activerecord/lib/active_record/relation/finder_methods.rb +++ b/activerecord/lib/active_record/relation/finder_methods.rb @@ -49,6 +49,7 @@ module ActiveRecord # # Post.find_by name: 'Spartacus', rating: 4 # Post.find_by "published_at < ?", 2.weeks.ago + # def find_by(*args) where(*args).take end diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index c086386da6..19fe8155d9 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -163,6 +163,7 @@ module ActiveRecord # User.order('email DESC').reorder('id ASC').order('name ASC') # # generates a query with 'ORDER BY id ASC, name ASC'. + # def reorder(*args) args.blank? ? self : spawn.reorder!(*args) end @@ -276,6 +277,7 @@ module ActiveRecord # Post.none # => returning [] instead breaks the previous code # end # end + # def none NullRelation.new(@klass, @table) end @@ -310,6 +312,7 @@ module ActiveRecord # # Topics.select('a.title').from(Topics.approved, :a) # # => SELECT a.title FROM (SELECT * FROM topics WHERE approved = 't') a + # def from(value, subquery_name = nil) spawn.from!(value, subquery_name) end diff --git a/activerecord/lib/active_record/relation/spawn_methods.rb b/activerecord/lib/active_record/relation/spawn_methods.rb index 4fb1cb6726..80d087a9ea 100644 --- a/activerecord/lib/active_record/relation/spawn_methods.rb +++ b/activerecord/lib/active_record/relation/spawn_methods.rb @@ -23,6 +23,7 @@ module ActiveRecord # Post.where(:published => true).merge(recent_posts) # # Returns the intersection of all published posts with the 5 most recently created posts. # # (This is just an example. You'd probably want to do this with a single query!) + # def merge(other) if other.is_a?(Array) to_a & other @@ -44,6 +45,7 @@ module ActiveRecord # # Post.order('id asc').except(:order) # discards the order condition # Post.where('id > 10').order('id asc').except(:where) # discards the where condition but keeps the order + # def except(*skips) result = Relation.new(klass, table, values.except(*skips)) result.default_scoped = default_scoped @@ -57,6 +59,7 @@ module ActiveRecord # # Post.order('id asc').only(:where) # discards the order condition # Post.order('id asc').only(:where, :order) # uses the specified order + # def only(*onlies) result = Relation.new(klass, table, values.slice(*onlies)) result.default_scoped = default_scoped |