How do I "forward" requests and switch their contexts?

[jens.t...@gmail.com]

Hello everybody,

I could need a bit of help with a more architectural question. I'm using Cornice to build a REST server on top of Pyramid/SQLAlchemy. Now I've got two main "domains" in my endpoints, which are accessed by the two different user roles in the system:

 - Normal users have endpoints like /api/user/profile, etc

 - Administrator users have endpoints like /api/admin/user/profile, etc.

Obviously, each "domain" has its own set of endpoints; however, sometimes the endpoints overlap. For example, assume the two endpoints above. A normal user may POST her name to /api/user/profile to change the name in her own profile. An administrator, in contrast, has to specify both the user and the name of the user in their POST request to change the name for a given user.

This is essentially duplicated functionality, where the only difference is the context.

How would I best go about implementing such a scenario without duplicating code for the two requests?

It would make sense to "forward" the normal user request to the view handler of the admin, unless this elevation of rights would be frowned upon. Alternatively, one could "forward" the admin request to the view function of the normal user. Either way, the context data would have to be adjusted but that is a small effort compared to the duplicated code. Or should I uses common helper functions, which would still mean to duplicate code that validates incoming request data?

So what is the recommended way of going about such scenarios?

Thanks!

Jens

[Torsten Irländer]

Hi Jens,

I would try to factor out as many code as possible which is common to both views into a separate function and use this function both  context. I assume the validation and setting values in the profile work in the same way and does not rely on its context.

This way you can implement context specific logic in the views an than call common logic within the methods mentioned above.

Torsten

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