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All snippets written in Python

2958 snippets

Snippet List

Active Directory Authentication Backend (with User object updating)

I used the code from http://djangosnippets.org/snippets/901/ and expanded the code to have the possibility to map AD groups to the superuser attribute of Django's users. The code updates the Django users database every time a user connects, so every change in the AD is replicated to the Django database.

  • Active Directors
  • Auth
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MongoDB data load

This snippet loads data from JSON files into a MongoDB database. The code is related with the other snippet [MongoDB data dump](http://djangosnippets.org/snippets/2872/). To get it working, just create a ``MONGODB_NAME`` variable in settings, holding the name of your Mongo database. This can be edited to fit more your needs. The snippet requires ``Pymongo``, since it uses its bson module and the ``MongoClient``.

  • loaddata
  • fixtures
  • mongodb
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MongoDB data dump

This Django management command just dumps data from a given MongoDB collection into a JSON file. To get it working, just create a ``MONGODB_NAME`` variable in settings, holding the name of your Mongo database. This can be edited to fit more your needs. The snippet requires Pymongo, since it uses its ``bson`` module and the ``MongoClient``.

  • dump
  • fixtures
  • mongodb
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X-Sendfile static file serve view

This view has the same functionality as Django's builtin static view function but when the configuration option `USE_XSENDFILE = True` is specified in the settings it returns the absolute path of the file instead of its contents. This allows the mod_xsendfile module in Apache or Lighttpd to take care of efficiently serving the file while still allowing for Django to take care of other processing of the request, like access control or counting the amount of downloads.

  • static
  • xsendfile
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Link If templatetag

Django templatetag wraps everything between ``{% linkif %}`` and ``{% endlinkif %}`` inside a ``link`` if ``link`` is not False. Sample usage:: {% linkif "http://example.com" %}link{% endlinkif %} {% linkif object.url %}link only if object has an url{% endlinkif %}

  • link
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Dump a model instance and related objects as a Python data structure

This utility makes a text dump of a model instance, including objects related by a forward or reverse foreign key. The result is a hierarchical data structure where * each instance is represented as a list of fields, * each field as a (<name>, <value>) tuple, * each <value> as a primitive type, a related object (as a list of fields), or a list of related objects. See the docstring for examples. We used this to make text dumps of parts of the database before and after running a batch job. The format was more useful than stock `dumpdata` output since all related data is included with each object. These dumps lend themselves particularly well for comparison with a visual diff tool like [Meld](http://meldmerge.org/).

  • serialize
  • dump
  • model
  • instance
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HibernateBooleanField

Sometimes its necessary to map your django models to Java Hibernate created tables. Hibernate maps boolean field to bit(1) column instead of tinyint in django. NOTE: tested for mysql backend only

  • model
  • field
  • hibername
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Django and Twill

Django's test client is very limited when it comes to testing complex interactions e.g. forms with hidden or persisted values etc. Twill excels in this area, and thankfully it is very easy to integrate it. * Use `twill_setup` in your `TestCaseSubClass.setUp()` method * Use `twill_teardown` in `TestCaseSubClass.tearDown()` method * In a test, use something like `make_twill_url()` to generate URLs that will work for twill. * Use `twill.commands.go()` etc. to control twill, or use `twill.execute_string()` or `twill.execute_script()`. * Add `twill.set_output(StringIO())` to suppress twill output * If you want to write half the test, then use twill interactively to write the rest as a twill script, use the example in `unfinished_test()` Twill will raise exceptions if commands fail. This means you will get 'E' for error, rather than 'F' for fail in the test output. If necessary, it wouldn't be hard to wrap the twill commands to flag failure with TestCase.assert_ There are, of course, more advanced ways of using these functions (e.g. a mixin that does the setup/teardown for you), but the basic functions needed are here. See also: * [Twill](http://twill.idyll.org/) * [Twill Python API](http://twill.idyll.org/python-api.html)

  • testing
  • tests
  • twill
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Auto-create Django admin user during syncdb

This avoids the frustrating step of having to set up a new admin user every time you re-initialize your database. Put this in any `models` module. In this example I use `common.models`. Adapted from http://stackoverflow.com/questions/1466827/

  • django
  • admin
  • user
  • syncdb
  • manage
  • automatic
  • adminuser
  • admin-user
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Spaceless all HTML pages

This middleware remove all space between tags and line break of all HTML pages. Use a standard Django method. Set *force_spaceless* for dev. purpose.

  • middleware
  • optimization
  • spaceless
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Image Preview on ImageField in admin

This makes a 100x100 thumbnail of the image for the image field and shows it in the admin form combination of http://djangosnippets.org/snippets/955/ and http://www.psychicorigami.com/2009/06/20/django-simple-admin-imagefield-thumbnail/

  • admin
  • widgets
  • widget
  • image-previews
  • previews-on-ImageField
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Login Required Middleware

Sometimes it's a real pain to use the `@login_required` decorator all over the views of a complicated site. This middleware requires login on every page by default and supports a list of regular expression to figure out the exceptions. This way you don't have to worry about forgetting to decorate a view. This snippet requires `LOGIN_URL` to be set in settings.py, and optionally allows you fill out `LOGIN_EXEMPT_URLS`, a tuple of regular expressions (similar to urls.py) that lists your exceptions. Example: `` LOGIN_EXEMPT_URLS = ( r'^about\.html$', r'^legal/', # allow the entire /legal/* subsection ) ``

  • middleware
  • authentication
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