Pyramid traversal view lookup using method names

Question

In pyramid when using traversal url lookup, is it possible to have the view lookup algorithm check for method names of a class. For example, I could do something like this:

@view_defaults(context=models.Group)
class GroupView(object):
    def __init__(self, context, request):
        self.context = context
        self.request = request

    @view_config(name='members')
    def members(self):
        pass

to match let's say /groups/somegroup/members

Is there a way to make the name lookup part dynamic? That is, something like this:

@view_defaults(context=models.Group)
class GroupView(object):
    def __init__(self, context, request):
        self.context = context
        self.request = request

    def members(self):
        pass

    def add(self):
        pass

So that both /groups/somegroup/members and /groups/somegroup/add will both resolve to their respective methods of the class?

You'll have to do this yourself. Don't forget that the view definitions are there not just to map the URL to a method but also to specify predicates and rendering options. You're going to lose all of that cool stuff on a per-view basis when you framework it out. — Michael Merickel, Dec 29 '12 at 01:10

score 3 · Accepted Answer · answered Dec 28 '12 at 21:54

Can't say this is the best way (I don't know anything about pyramid); but one option might be to just decorate the class with a decorator that decorates the method names appropriately. eg.

import inspect

def config_wrap(func, name):
    @view_config(name=name)
    def wrapped(*args, **kwargs):
        return func(*args, **kwargs)
    return wrapped

def dynamic_names(cls):
    for name, m in inspect.getmembers(cls, inspect.ismethod):
        setattr(cls,name,config_wrap(m, name))
    return cls


@dynamic_names
@view_defaults(context=models.Group)
class GroupView(object):
    def __init__(self, context, request):
        self.context = context
        self.request = request

    def members(self):
        pass

    def add(self):
        pass

knowing pyramid myself, this is the way I would go about it. — Tom Willis, Dec 28 '12 at 22:29
I thought about doing this, I was hoping there would be a built in way of doing it. Oh well, I'll probably go this route. — Falmarri, Dec 28 '12 at 22:48

Pyramid traversal view lookup using method names

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