Method: Sequel::Model::Associations::ManyToManyAssociationReflection#default_eager_loader

Defined in:
lib/sequel/model/associations.rb

#default_eager_loader(eo) ⇒ Object

The default eager loader used if the user doesn’t override it. Extracted to a method so the code can be shared with the many_through_many plugin.



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# File 'lib/sequel/model/associations.rb', line 1285

def default_eager_loader(eo)
  h = eo[:id_map]
  assign_singular = assign_singular?
  delete_rn = delete_row_number_column
  uses_lcks = self[:uses_left_composite_keys]
  left_key_alias = self[:left_key_alias]
  name = self[:name]

  self[:model].eager_load_results(self, eo) do |assoc_record|
    assoc_record.remove_key!(delete_rn) if delete_rn
    hash_key = if uses_lcks
      left_key_alias.map{|k| assoc_record.remove_key!(k)}
    else
      assoc_record.remove_key!(left_key_alias)
    end

    objects = h[hash_key]

    if assign_singular
      objects.each do |object| 
        object.associations[name] ||= assoc_record
      end
    else
      objects.each do |object|
        object.associations[name].push(assoc_record)
      end
    end
  end
end