使用Google App Engine Python 2.7在Django 1.2中自定义标签

Question

Creating a custom tag in Google App Engine Python2.5 with Webapp used to be a joyful experience. Here: Django templates and variable attributes

But now, in Python 2.7 with Webapp2 and Django 1.2, it is a pain in the ass. I can only find bits of information here and there, and some of the methods contradict with each other.

The method described in http://www.john-smith.me/Tag/webapp2 ranks high in Google, but some people claim it is "what a waste of time" Webapp2 custom tags

This one method seems to work

from django.template.loader import add_to_builtins
add_to_builtins('xxxxx')

But I dont know the details. Who can provide a step by step example?

I dont know why there are no official documents about these stuff. I mean, this is not science experiments in which we explore the unknown. There supposed to be some documentation so the developers can save their time.

Answer 1

I had same problem.

The fix:

1. Create templatetags folder. Add there module with custom tags as explained in Django docs Custom template tags and filters . Example folder structure:

    app.yaml myapp/ __init__.py templatetags/ __init__.py my_tags.py 

2. In settings.py set INSTALLED_APPS to myapp (name of folder which contains templatetags sub-folder):

    INSTALLED_APPS = ( 'myapp' ) 

3. Now when you call {% load my_tags %} in template Django should also seek the mytags module in myapp/*/templatetags/ folder.