Dynamic View Selection

[Khai Weng Au Yeong]

Not sure if this has been covered before, but I was thinking about this for awhile.

Is there a way to dynamically select a View to be used by a URL without having to replicate the URL dispatcher over and over via a "superceding" like method. Like for example, in my project (let's say it's generic), if I have "BaseEmailer" at "<project_root>.emailer.views" and I have a client with a special-case need installed at "<project_root>.clients.emailer.views", can I get Django to dynamically select it just based off this logic: if client-app-name = base-app-name?

[Russell Keith-Magee]

Yes - but it doesn’t depend on some hidden feature of Django. It’s 

A Django View is just a function that accepts a request + args, and returns a response. That view can, itself, call other functions - including other functions that can act as views. So, you could write a “switch statement” view:

def switch_view(request, arg1, arg2):

    if client_app_name == ‘xxx’:

        return xxx.view(request, arg1, arg2)

    else:

        return base_view(request, arg1, arg2)

The logic of exactly how to manage the “switch” is entirely up to you.

Depending on how you set up your client sub-packages, you might even be able to use import logic to your advantage:

def switch_view(request, arg1, arg2):

    try:

        client_module = importlib.import_module(‘project.%s.emailer.view’ % client_name)

        return client_module.view(request, arg1, arg2)

    except ImportError:

        return base_view(request, arg1, arg2)

Yours,

Russ Magee %-)

On 11 Aug 2017, at 5:32 am, Khai Weng Au Yeong <aykha...@gmail.com> wrote:

Not sure if this has been covered before, but I was thinking about this for awhile.

Is there a way to dynamically select a View to be used by a URL without having to replicate the URL dispatcher over and over via a "superceding" like method. Like for example, in my project (let's say it's generic), if I have "BaseEmailer" at "<project_root>.emailer.views" and I have a client with a special-case need installed at "<project_root>.clients.emailer.views", can I get Django to dynamically select it just based off this logic: if client-app-name = base-app-name?

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[Khai Weng Au Yeong]

Hey, Russ.

Alright, that answers plenty. If I were to do this I think I would experiment with implementing this into the Middleware segment.

Thanks,

Khai