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Merge pull request #20106 from claudiob/finder-rails3

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[ci skip] Stop explaining finders for Rails 3
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Yves Senn 2015-05-11 09:30:18 +02:00
commit db0e649aba
1 changed files with 2 additions and 14 deletions
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16
activerecord/lib/active_record/relation/finder_methods.rb
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@ -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