c_fields

on demand cfields
c_f_id = Account.find(ID),configurations.where(model_type: 'dispatch_guides').custom_field_type_ids
CustomFieldType.find(c_f_id)
cambiar si no tiene
Account.find(1),configurations.where(model_type: 'dispatch_guides').first.update(custom_field_type_ids: [1147])
ver si existe custom_field
CustomField.where(custom_field_type_id: c_f_id)