Nice summary, Christoph :)
On Thursday February 5, 2009 15:49:22 Christoph Zwerschke wrote:
> 4) A different solution is to add an "access" object to TG2 and make it
> a standard template variable that auto-evaluates predicates passed as
> attributes. Here is a possible implementation:
>
> -------------------------------------------------------------
> from tg import request
> from repoze.what import predicates
>
> class Access(object):
> """Environ-aware predicates evaluating immediately."""
>
> def __getattr__(self, name):
> predicate = getattr(predicates, name)
> if callable(predicate):
> def predicate_is_met(*args, **kwargs):
> return predicate(*args, *kwargs).is_met(
> request.environ)
> return predicate_is_met
> else:
> return predicate
>
> access = Access() # make this a standard tg template variable
> -------------------------------------------------------------
>
> This would allow easy evaluation of all existing predicates in templates
> in the form tg.acess.has_permission('edit'). We could also provide a
> mechanism for including additional custom predicates in the access object.
Just for the record, this is the only forward compatible alternative and the
only that sounds sensible to me.
Regarding point #1, it's fine with me and I'll implement it this weekend if
it's OK with you.
Cheers.
--
Gustavo Narea <http://gustavonarea.net/>.
Get rid of unethical constraints! Get freedomware:
http://www.getgnulinux.org/
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