The manual’s example uses a single, self-referencing table. What would be the
syntax for joined, parent/child tables?
I get an AttributeError. Not sure if the parent_name formation is the problem
roots = db((db.role_member.id > 0) & (db.role_member.object_super_object_fk
==
db.object_super_object.id)).select().as_trees(parent_name=db.role_member.object_super_object_fk)
File
"C:\alex\alt_web2py_11_new_boot\web2py_win\web2py\gluon\packages\dal\pydal\objects.py",
line 2470, in as_trees
drows[row.id] = row
File
"C:\alex\alt_web2py_11_new_boot\web2py_win\web2py\gluon\packages\dal\pydal\objects.py",
line 109, in __getattr__
raise AttributeError
It seems that the solution could be to create a set so there is only one
record-type:
mySet = db((db.role_member.id > 0) & (db.role_member.object_super_object_fk ==
db.object_super_object.id)).select()
Then find some way to make it work within as_trees:
roots = db(mySet).select().as_trees(parent_name='mySet.object_super_object_fk')
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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