method

size

v4.1.8 - Show latest stable - 0 notes - Class: ActiveRecord::Associations::HasManyThroughAssociation

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What's this?

size() public

Returns the size of the collection by executing a SELECT COUNT(*) query if the collection hasn’t been loaded and calling collection.size if it has. If it’s more likely than not that the collection does have a size larger than zero, and you need to fetch that collection afterwards, it’ll take one fewer SELECT query if you use #length.

Show source

# File activerecord/lib/active_record/associations/has_many_through_association.rb, line 19
      def size
        if has_cached_counter?
          owner.send(:read_attribute, cached_counter_attribute_name)
        elsif loaded?
          target.size
        else
          super
        end
      end

size

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