49 lines
1.1 KiB
Python
49 lines
1.1 KiB
Python
from copy import copy
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from Persistent import Persistent
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class User_list( Persistent ):
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"""
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A list of users.
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"""
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def __init__( self, id, secondary_id = None ):
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"""
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Create a list of users, and give the list the provided id.
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@type id: unicode
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@param id: id of the user list
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@type secondary_id: unicode or NoneType
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@param secondary_id: convenience id for easy access (optional)
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@rtype: User_list
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@return: newly constructed user list
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"""
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Persistent.__init__( self, id, secondary_id )
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self.__users = []
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def add_user( self, user ):
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"""
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Add a user to this list.
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@type user: User
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@param user: user to add
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"""
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if user.object_id not in [ u.object_id for u in self.__users ]:
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self.update_revision()
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self.__users.append( user )
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def remove_user( self, user ):
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"""
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Remove a user from this list.
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@type user: User
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@param user: user to remove
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"""
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if user in self.__users:
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self.update_revision()
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self.__users.remove( user )
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def __set_users( self, users ):
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self.__users = users
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users = property( lambda self: copy( self.__users ), __set_users )
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