From 2493229674ba2e8736901d44abe0c82e6ac82993 Mon Sep 17 00:00:00 2001 From: Pratik Naik Date: Wed, 20 Jan 2010 18:17:37 +0530 Subject: Delegate exists? to Relation --- activerecord/lib/active_record/base.rb | 36 +--------------------------------- 1 file changed, 1 insertion(+), 35 deletions(-) (limited to 'activerecord/lib/active_record/base.rb') diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb index 5141f0b32f..2629abe778 100755 --- a/activerecord/lib/active_record/base.rb +++ b/activerecord/lib/active_record/base.rb @@ -556,7 +556,7 @@ module ActiveRecord #:nodoc: end alias :colorize_logging= :colorize_logging - delegate :find, :first, :last, :all, :destroy_all, :to => :scoped + delegate :find, :first, :last, :all, :destroy_all, :exists?, :to => :scoped delegate :select, :group, :order, :limit, :joins, :where, :preload, :eager_load, :includes, :from, :lock, :readonly, :having, :to => :scoped delegate :count, :average, :minimum, :maximum, :sum, :calculate, :to => :scoped @@ -586,40 +586,6 @@ module ActiveRecord #:nodoc: connection.select_all(sanitize_sql(sql), "#{name} Load").collect! { |record| instantiate(record) } end - # Returns true if a record exists in the table that matches the +id+ or - # conditions given, or false otherwise. The argument can take five forms: - # - # * Integer - Finds the record with this primary key. - # * String - Finds the record with a primary key corresponding to this - # string (such as '5'). - # * Array - Finds the record that matches these +find+-style conditions - # (such as ['color = ?', 'red']). - # * Hash - Finds the record that matches these +find+-style conditions - # (such as {:color => 'red'}). - # * No args - Returns false if the table is empty, true otherwise. - # - # For more information about specifying conditions as a Hash or Array, - # see the Conditions section in the introduction to ActiveRecord::Base. - # - # Note: You can't pass in a condition as a string (like name = - # 'Jamie'), since it would be sanitized and then queried against - # the primary key column, like id = 'name = \'Jamie\''. - # - # ==== Examples - # Person.exists?(5) - # Person.exists?('5') - # Person.exists?(:name => "David") - # Person.exists?(['name LIKE ?', "%#{query}%"]) - # Person.exists? - def exists?(id_or_conditions = nil) - case id_or_conditions - when Array, Hash - where(id_or_conditions).exists? - else - scoped.exists?(id_or_conditions) - end - end - # Creates an object (or multiple objects) and saves it to the database, if validations pass. # The resulting object is returned whether the object was saved successfully to the database or not. # -- cgit v1.2.3