Hi,

I have searched the lists archive and did not found a solution to my problem.

I want to force a tree hierarchy using dtml-tree to expand a specific branch when it is rendered the first time.

I use the following Python code borrowed from TreeTag.py (encode_seq() ) to encode the 'id' of the tree item where I want the tree to be opened :

from string import join, split, rfind, find, translate
from urllib import quote, unquote
from zlib import compress, decompress
from binascii import b2a_base64, a2b_base64

tbl=join(map(chr, range(256)),'')
tplus=tbl[:ord('+')]+'-'+tbl[ord('+')+1:]
tminus=tbl[:ord('-')]+'+'+tbl[ord('-')+1:]

state=compress(str([id]))

l=len(state)
if l > 57:
    states=[]
    for i in range(0,l,57):
        states.append(b2a_base64(state[i:i+57])[:-1])
    state=join(states,'')
else:
    state=b2a_base64(state)[:-1]

l=find(state,'=')
if l >= 0:
state=state[:l]
state=translate(state, tplus)

return state

***********************************************

The dtml-tree that I want to manipulate is something like :

<dtml-let id="''">
   <dtml-tree id assume_children=yes id=id branches_expr="an_external_method(PARENT=id, USER=USER)">
       <dtml-var title>
    </dtml-tree>
</dtml-let>

The problem is that when I display the value returned by this Python code for a given 'id' and compare it to the value of 'tree-e' in the REQUEST, they don't match. And I expect them to match.

Can someone give me some lights ? Is my problem related to cookies or is it my encoding function that is used correctly ?

Many thanks,

Kamon

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