On Oct 7, 2005, at 2:42 PM, mario ruggier wrote:
I'd be interested to understand how you have modeled it now. I do
not need any conversion utilities... looking at the code (and
examples... ;-) would be very much appreciated.
# PersistentSet is a new durus type.
# string is a new spec that includes unicodes and ascii strs.
class Permissions (PersistentDict):
data_is = {string:sequence(either(Persistent, True),
PersistentSet)}
def grant(self, permission, granter):
require(permission, string)
require(granter, either(Persistent, True))
if permission not in self:
self[permission] = PersistentSet([granter])
else:
self[permission].add(granter)
def ungrant(self, permission, granter):
require(permission, string)
require(granter, either(Persistent, True))
if self.is_granted(permission, granter):
self.data[permission].remove(granter)
if len(self.data[permission]) == 0:
del self.data[permission]
def is_granted(self, permission, granter):
return granter in self.get(permission, [])
class DulcineaUser(DulcineaPersistent):
global_permissions = {
"act-as":
"Allow to act as another user.",
"create-users":
"Allow the creation of other users.",
"manage-permissions":
"Allow changing of permissions.",
"staff":
"Is a member of the staff",
"system":
"Allow to do things normally done by the software system.",
}
permissions_is = Permissions
...
def is_admin(self):
return self.is_granted('staff')
def is_granted(self, permission, granter=True):
return self.get_permissions().is_granted(permission, granter)
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