Admin-like autodiscover for your apps. I have copy/pasted this code too many times...Dynamically autodiscover a particular module_name in a django project's INSTALLED_APPS directories, a-la django admin's autodiscover() method.
### Problem: you want to limit posts to a view This can be accomplished with a view decorator that stores hits by IP in memcached, incrementing the cached value and returning 403's when the cached value exceeds a certain threshold for a given IP.
I'll throw my implementation into the mix - shortcut for render_to_response as a decorator.
http://github.com/coleifer/django-generic-aggregation http://charlesleifer.com/blog/generating-aggregate-data-across-generic-relations/ Generate and calculate aggregations across generic foreign keys. >>> from misc import generic_annotate, generic_aggregate >>> from blog.models import Entry >>> from tagging.models import TaggedItem >>> from django.db.models import Count >>> qs = generic_annotate(Entry.objects.all(), TaggedItem.object, 'id', Count) >>> qs[0].score 5L >>> qs[1].score 4L >>> qs[1].tags u'databases django many-to-many python' >>> generic_aggregate(Entry.objects.all(), TaggedItem.object, 'id', Count) 106L # total number of times entries were tagged
I often find myself testing that the queryset returned by a method contains the instances I expect. I use a custom method, **assertQuerysetEqual()**, to test the equality of two querysets or lists:: def test_some_values(self): qs = get_user_list() self.assertQuerysetEqual(qs, [normal_user, super_user]) Makes it easy to test small querysets against lists whose values are known and expected.
Searches through templates, adding the `{% csrf_token %}` tag whenever it finds a form that posts.
Add to your middleware classes before 'django.middleware.csrf.CsrfViewMiddleware'.
Often I want to call a custom manager method in the template, something like Snippet.objects.get_latest(). I hate writing custom templatetags to do all that work, so instead I've written a filter that will work for any. Here's how I use it: {% for snippet in "cab.snippet"|call_manager:"top_rated"|slice:":5" %}
Say you'd like to cache one of your template filters. This decorator acts sort of like memoize, caching a result set based on the arguments passed in (which are used as the cache key).
Sometimes you may want to check how many queries a specific set of operations is taking. This TestCase decorator allows you to do that.
Writing templatetags is obnoxious. Say you have a small blurb on all your pages that shows the latest 5 comments posted to the site -- using this filter, you could write the following: {% for comment in "comments.comment"|latest:5 %} ...display comment here... {% endfor %}