Split template_file template loading and template location logic

[Michael Twomey <micktwomey@…>]

To make life a little easier for someone using a different templating system (e.g. kid), it'd useful to be able to use django's template location logic to traverse the template directories finding your custom template file.

I've created a patch which splits django.core.template_file.load_template_source into two functions, find_template (which locates a template somewhere in the template directories) and load_template_source which behaves exactly the same as before, except it uses find_template.

An example of it's use in a view:

from django.core import template_file

def blog_feed(request, ...):
        
    ...get objects...
    
    filename = template_file.find_template("custom_template.xml")
    
    renderer = my_custom_renderer(filename, ...)
    
    return HttpResponse(renderer.render(), mimetype="application/xml")

[Michael Twomey <micktwomey@…>]

svn diff of template_file.py

[Adrian Holovaty]

Quick question: Why'd you change the try/except to an if statement? Personal preference, or is there a solid reason?

[Sune Kirkeby <sune.kirkeby@…>]

Is this needed now that we have load_template_source? Also, it won't work easily for templates not stored as files (i.e. database-based templates and egg-templates), you would have to write the template-source out to a temporary file...

[rjwittams]

This doesn't really make much sense any more with the template loading changes.
Open a new ticket if load_template_source does not fit the bill.