method

length

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What's this?

length() public

Returns the size of the collection calling size on the target.

If the collection has been already loaded length and size are equivalent. If not and you are going to need the records anyway this method will take one less query. Otherwise size is more efficient.

Show source

# File activerecord/lib/active_record/associations/collection_association.rb, line 314
      def length
        load_target.size
      end

length

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