diff options
Diffstat (limited to 'activerecord/lib/active_record/relation/finder_methods.rb')
| -rw-r--r-- | activerecord/lib/active_record/relation/finder_methods.rb | 22 |
1 files changed, 5 insertions, 17 deletions
diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb index 576a32bf75..6020aa238f 100644 --- a/activerecord/lib/active_record/relation/finder_methods.rb +++ b/activerecord/lib/active_record/relation/finder_methods.rb @@ -46,7 +46,7 @@ module ActiveRecord # # returns the first item or returns a new instance (requires you call .save to persist against the database). # # Person.where(name: 'Spartacus', rating: 4).first_or_create - # # returns the first item or creates it and returns it, available since Rails 3.2.1. + # # returns the first item or creates it and returns it. # # ==== Alternatives for +find+ # @@ -57,10 +57,10 @@ module ActiveRecord # # returns a chainable list of instances with only the mentioned fields. # # Person.where(name: 'Spartacus', rating: 4).ids - # # returns an Array of ids, available since Rails 3.2.1. + # # returns an Array of ids. # # Person.where(name: 'Spartacus', rating: 4).pluck(:field1, :field2) - # # returns an Array of the required fields, available since Rails 3.1. + # # returns an Array of the required fields. def find(*args) if block_given? to_a.find(*args) { |*block_args| yield(*block_args) } @@ -111,23 +111,11 @@ module ActiveRecord # Find the first record (or first N records if a parameter is supplied). # If no order is defined it will order by primary key. # - # Person.first # returns the first object fetched by SELECT * FROM people + # Person.first # returns the first object fetched by SELECT * FROM people ORDER BY people.id LIMIT 1 # Person.where(["user_name = ?", user_name]).first # Person.where(["user_name = :u", { u: user_name }]).first # Person.order("created_on DESC").offset(5).first - # Person.first(3) # returns the first three objects fetched by SELECT * FROM people LIMIT 3 - # - # ==== Rails 3 - # - # Person.first # SELECT "people".* FROM "people" LIMIT 1 - # - # NOTE: Rails 3 may not order this query by the primary key and the order - # will depend on the database implementation. In order to ensure that behavior, - # use <tt>User.order(:id).first</tt> instead. - # - # ==== Rails 4 - # - # Person.first # SELECT "people".* FROM "people" ORDER BY "people"."id" ASC LIMIT 1 + # Person.first(3) # returns the first three objects fetched by SELECT * FROM people ORDER BY people.id LIMIT 3 # def first(limit = nil) if limit |