method

count

v5.0.0.1 - Show latest stable - 0 notes - Class: CollectionProxy

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1
2.3.8
3.0.0
3.0.9
3.1.0
3.2.1
3.2.8
3.2.13
4.0.2 (0)
4.1.8 (0)
4.2.1 (0)
4.2.7 (0)
4.2.9 (0)
5.0.0.1 (0)
5.1.7 (38)
5.2.3 (0)
6.0.0 (0)
6.1.3.1 (0)
6.1.7.7 (0)
7.0.0 (0)
7.1.3.2 (0)
7.1.3.4 (0)
What's this?

count(column_name = nil) public

Count all records using SQL.

class Person < ActiveRecord::Base
  has_many :pets
end

person.pets.count # => 3
person.pets
# => [
#       #<Pet id: 1, name: "Fancy-Fancy", person_id: 1>,
#       #<Pet id: 2, name: "Spook", person_id: 1>,
#       #<Pet id: 3, name: "Choo-Choo", person_id: 1>
#    ]

Show source

# File activerecord/lib/active_record/associations/collection_proxy.rb, line 731
      def count(column_name = nil)
        @association.count(column_name)
      end

count

Related methods