from cubicweb.schema import format_constraint

class Folder2(MetaUserEntityType):

    """folders are used to classify entities. They may be defined as a tree.

    When you include the Folder entity, all application specific entities

    may then be classified using the "filed_under" relation.

    """

    name = String(required=True, indexed=True, internationalizable=True,

                  constraints=[UniqueConstraint(), SizeConstraint(64)])

    description_format = String(meta=True, internationalizable=True,

                                default='text/rest', constraints=[format_constraint])

    description = String(fulltextindexed=True)

    filed_under2 = BothWayRelation(

        SubjectRelation('Folder2', description=_("parent folder")),

        ObjectRelation('*'),

        )

class filed_under2(MetaUserRelationType):

    """indicates that an entity is classified under a folder"""

    # is_about has been renamed into filed_under

    #//* is_about Folder

    #* filed_under Folder