Re: [Twisted-web] Page object design: wrapping a dictionary containing data

Jan. 23, 2005

      Mary Gardiner wrote:
...
What's a good way for the Page object to wrap that dictionary that
doesn't involve doing this:
def data_name(self, ctx, data):
        return self.d['project_name']
...
I vaguely recall that the equivalent of this used to be possible in
Woven:
def data_project(self, ctx, data):
        return self.d
and then that the data items were accessible by (say)
stan.directive("project/project_name"). This doesn't look like its
supported in Nevow. Is this correct? What alternative designs are there
for something like this?
heya Mary,

there's a lot of Nevow magic I don't know, but in case something doesn't 
exist, something like the following should work, albeit, pretty crude:

python -c '
class C:
     def __getattr__( self, attr ):
         if attr.startswith( "data_" ):
             return lambda ctx, data, s=self, a=attr : s.d["project_%s" 
% a[len("data_"):]]
         raise AttributeError

c = C()

c.d  = { "project_name" : "roar" }
ctx  = "ned"
data = "fred"

print c.data_name( ctx, data )
'

Andy.

Re: [Twisted-web] Page object design: wrapping a dictionary containing data

Andy Gayton