instance method `count`

Ruby on Rails 4.0.13

Since v4.0.13

Available in: v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

count(column_name = nil, options = {})

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>
#    ]

Parameters

column_name opt = nil
options opt = {}

Source

# File activerecord/lib/active_record/associations/collection_proxy.rb, line 673
      def count(column_name = nil, options = {})
        @association.count(column_name, options)
      end

Defined in activerecord/lib/active_record/associations/collection_proxy.rb line 673 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Associations::CollectionProxy

Signature

Parameters