Re: View decorator for common navigation elements?

Hi Victor,

I think this is a very good question.  I've been considering what the best approach would be and decided on either using a decorator as you've mentioned or implementing class based views.  You can create base view classes that load common data for the different types of pages.  You would then have specific views subclass one of the base view classes to inherit the loading of the common data while acting on data specific to their view.

I'm curious if anyone else has any opinions or experiences loading common page elements in a clean and DRY manner.

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Alex

On Thu, Sep 29, 2011 at 5:59 PM, Victor Hooi <victorhooi@gmail.com> wrote:

Hi,

We have a common navigation bar on nearly every page (view) that contains a dropdown - this dropdown is populated with items from a database table. This dropdown also has AJAX behaviour attached to it.

I'm thinking I can create a decorator that will retrieve the list from the database, and return a Python list

We can then wrap every single view in this decorator, and then pass the list to the template for rendering.

Firstly - is there a more elegant alternative, rather than wrapping every single view in this decorator? (Middleware? Or is that a poor fit here? Anything else?).

And secondly - are there are any performance issues here? We're making database calls with every single view, just to get a list for a navigation dropdown. Smarter way?

I know I can use the caching middleware to cache entire pages, or even template fragments - but how about caching a single list() like this? What are other methods people are using to tackle this?

Cheers,

Victor

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