Calling another view in Pyramid

Question

My goal: In Pyramid, to call another view-callable, and to get a Response object back without knowing any details about that view-callable.

In my Pyramid a

Answer 1

The Pyramid documentation here indicates that leaving the name key word argument out of view_config will cause the view to be registered by the function itself (rather than a string):

Such a registration... implies that the view name will be *my_view*

So, in your case you should be able to use pyramid.view.render_view or pyramid.view.render_view_to_response referencing foo_view directly:

@view_config(route_name="bar")
def bar_view(request):
    return pyramid.views.render_view_to_response(None, request, name=foo_view)

Update:

Yep, your right, passing the view function does not work.

It's interesting, but taking your example code and applying the route_name to the config did not work for me. However, the following example, just giving the view a name sets the route url and gives the view a name. In this fashion render_view_to_response works as advertised. Naming, your views may not be what you want, but this configuration accomplishes the same thing as your example code without added configuration.

@view_config(name="foo")
def foo_view(request):
    # returning a response here, in lieu of having
    # declared a renderer to delegate to...
    return Response('Where am i? `{0[whereami]}'.format({"whereami" : "foo!"}))

@view_config(name="bar")
def bar_view(request):
    # handles the response if bar_view has a renderer 
    return render_view_to_response(None, request, name='foo')

@view_config(name="baz")
def baz_view(request):
    # presumably this would not work if foo_view was
    # not returning a Response object directly, as it
    # skips over the rendering part. I think you would
    # have to declare a renderer on this view in that case.
    return foo_view(request)

if __name__ == '__main__':
    config = Configurator()
    config.scan()
    app = config.make_wsgi_app()
    serve(app, host='127.0.0.1', port='5000')