order_by template filter
put this code into a file in a folder "templatetags" inside some application and use it like this: {% load your_file_name %} {% for item in your_list|order_by:"field1,-field2,other_class__field_name"
- template
- filter
- orderby
Snippet List
hide_email
This templatetag obsfucate mailto link and hide it while not happen onmouseover event. Usage: {% hide_email object.author object.author.email %} Output: <a href="mailto:[email protected]" onmouseover="var a=String.fromCharCode(79+35,14+103,66+41,30+71,49+49,16+81); var b=String.fromCharCode(14+50,9+105,61+56,81+26,92+9,2+96,20+77,13+33,75+24,32+79,31+78); this.href=['mail','to:',a,b].join('');">rukeba</a> Based on [Email Obsfucator](http://www.djangosnippets.org/snippets/536/) and [forums at Yandex.Market](http://market.yandex.ru/forums/). Example at [my guitar blog](http://rukeba.com/ra/2008/01/15/oasis-wonderwall/)
- templatetag
- antispam
Integrate Tenjin using a decorator
This provides basic [Tenjin](http://www.kuwata-lab.com/tenjin/) integration, using a decorator. Tenjin is a blazingly fast templating system, the fastest pure-python system available. For usage and configuration, see the example in the code. I modeled this after Robert Thomson's code for Mako integration.
- decorator
- tenjin
- template-engine
get_cache_or_query - Shortcut to common cache signature
Replaces something like this: cache_key = 'game1' the_game = cache.get(cache_key) if not the_game: the_game = Game.objects.get(id=1) cache.set(cache_key, the_game, 60*24*5) With this: the_game = get_cache_or_query('game1', Game, seconds_to_cache=60*24*5, id=1)
- cache
- optimization
- get_cache_or_object
State Machine inspired by acts_as_state_machine
A quick and dirty state machine inspired by the rails plugin, acts_as_state_machine. When implementing this on a model, the model is expected to have a character field in the database called "state." Next, come up with a few states that a model can be in and initialize a machine object with those states. Now you need to define the way a model moves from one state to the next. You do this by calling the 'event' method on the machine object. The first event argument defines the name of the method which will transition you to the next (to) state. The next argument is a dictionary defining what the current state must be in order to transition to the ending state. So, in the example, an Entry can transition from any state (the '*') to the draft state by calling entry.draft(). An entry can also transition from the 'draft' or 'hidden' state to the 'published' state which is enforced when calling entry.publish(). You can see what state a model object is in by calling <model_object>.state but sometimes it is more desirable to explicitly ask if a model object is in a particular state; this is done by the calling <model_object>.is_published() or <model_object>.is_draft(). All the code does is prefix "is_" to the "to" state which returns a True or False if the model is in that particular state.
- state-machine
get_queryset_or_404
Sometimes we want to get a queryset or 404, for example, if we're passing our queryset to a subclassed generic view. This is identical to get_list_or_404 but returns a queryset.
- shortcut
- template
- queryset
- get_queryset_or_404
- get_list_or_404
SMTPConnection with Return-Path
Sometimes when sending email you want to specify a Return-Path different from the "From:" address on the email. The Return-Path is used for bounced email and is required for [VERP](http://en.wikipedia.org/wiki/VERP). This class overrides SMTPConnection so that you can specify return_path.
QuerySetManager - easily add new QuerySet methods using a Model inner class
An easy way to add custom methods to the QuerySet used by a Django model. See [simonwillison.net/2008/May/1/orm/](http://simonwillison.net/2008/May/1/orm/) for an in-depth explanation.
- orm
- manager
- queryset
pass a list to object_list
A zen study.
- list
- queryset
- object_list
exception handling middleware
<code> is_loaded = False if not is_loaded: is_loaded = True #... ExceptionHandlingMiddleware as EHM import views EHM.append(views.AuthFailError, views.auth_fail) # when AuthFailError thrown it redirects to `auth_fail` view function. </code>
- middleware
- error
- exception
- custom
- handling
Conditional template parsing block
I'm developing a regionalization extension based on PostGIS and GeoDjango for a web-based LCA software. Because PostGIS (or PostgreSQL) is not available everywhere, we needed a way to fully disable the geographic extensions. Because of that, I set out to create a template block tag which only gets evaluated when GIS support is active and totally ignored (treated as a comment) otherwise. I had some problems getting my BoringNode to work (which should just pass the content through), so I've just used the AutoEscapeControlNode (why? Because it was the first usable class that jumped into my eye.) for this purpose.
- template-tag
- conditional-parsing
quick_url filter
A simple filter that generates a url from an object that has a get_absolute_url method. {{ object|quick_url }} a previous, simpler approach: [#511](http://www.djangosnippets.org/snippets/511/)
- filter
- get_absolute_url
- quick_url
Template Filter attr
You can add this code to a file named "field_attrs.py" in a templatetags folder inside an application. To use it, remember to load the file with the following template tag: {% load field_attrs %} And for each field you want to change the widget's attr: {{ form.phone|attr:"style=width:143px;background-color:yellow"|attr:"size=30" }}
- template
- filter
- newforms
- forms
- form
- field
- attr
Auto slug field
New field type which allows prepopulate_from to work not only from javascript but in python too. If the slugfield has unique=True creates a unique slug too.
- slug
- field
- auto
- prepopulate_from
Profiling middleware using cProfile
Similar to [Profiling Middleware](http://www.djangosnippets.org/snippets/186/), but uses cProfile instead of hotshot. Append ?prof to the URL to see profiling output instead of page output.
- middleware
- performance
- profiler