Login

3112 snippets

Snippet List

Return to a filtered changelist on change form save

You've filtered your changelist in your admin site and you want to edit a few entries here; you click on an object, edit it and press save, and you end up back at the default unfiltered changelist view. This ModelAdmin override is so that if you press "save" (not "save and add another", or "save and continue editing") you end up back at your filtered changelist. There are other ways out there and other snippets to do similar; however I hadn't seen one to only redirect if you pressed save so this is what I came up with. Hopefully it's useful.

  • admin
  • redirect
Read More

Easy configuration for relocatable sites

Deploying relocatable Django sites isn't currently as trivial as it should be (see http://code.djangoproject.com/ticket/8906, http://groups.google.com/group/django-developers/tree/browse_frm/thread/fa3661888716f940/). This snippet relocates all url patterns (similarly to http://djangosnippets.org/snippets/2129/) as well as the absolute url settings of `settings.py`. This allows deployment under a different mount point with a single Django setting, without having to repeat the mount point again as a SCRIPT_NAME parameter supplied by the web server.

  • deployment
  • mount point
  • relocatable
Read More

Query lookups using operators

This class emulates query lookups to behave as numeric operators. Inspired by SQLAlchemy. User.objects.filter( X('username') == 'diverman' ) User.objects.filter( X('username') != 'diverman' ) User.objects.filter( X('pk') > 10 ) User.objects.filter( X('pk') >= 10 ) User.objects.filter( X('pk') < 10 ) User.objects.filter( X('pk') <= 10 ) User.objects.filter( X('username') % 'iverma' ) User.objects.filter( X('username') << 'diver' ) User.objects.filter( X('username') >> 'man' ) User.objects.filter( X('pk') | (1, 2, 3) )

  • q
  • query
  • lookup
  • operator
Read More

Reset / Send account details email

I needed to create a feature for administrators to create accounts and email the *new account was created* email using a button. Remember to change the default template and subject to match your needs. The code is directly taken from `django.contrib.auth.forms.PasswordResetForm.save()`. Notice that the function raises `ValueError` if the user is missing an email address.

  • users
  • reset-password
Read More

adding fields to User model

This code adds new field to Django user model. It must be executed early as much as possible, so put this code to __init__.py of some application.

  • fields
  • model
  • user
  • auth
  • field
Read More

Django csrf_token Template Tag Fix

If you currently use `{% csrf_token %}`, you will notice it prints a hidden div, and an xHTML input tag. What if you don't want that hidden div, and/or you want your page to validate with HTML and not xHTML. This snippet returns only the csrf token itself, and none of the related HTML code. You can use it like this. `<input type="hidden" name="csrfmiddlewaretoken" value="{% with csrf_token as csrf_token_clean %}{{ csrf_token_clean }}{% endwith %}" >`

  • csrf_token
  • csrf_token_clean
Read More

Filter to generate QR codes

You can convert any string to a QR code image as easy as use a simple filter, thanks to google charts api. Common use: <img src="{{object.attribute_to_encode|qr:"120x130"}}" /> This will create a 120(width) x 130(heiht) image with the value of the attribute_to_encode encoded in a QR coded image.

  • filter
  • templatetag
  • templatefilter
  • barcode
  • qr
Read More

Use both NTLM and Anonymous authentication with IIS

Point '^accounts/login/$' or whatever your custom login path is to the 'negotiate_ntlm' view. This allows you to keep anonymous authentication enabled on IIS and easily lock down just the parts of the site you need to (e.g. [admin](http://djangosnippets.org/snippets/2127/)).

  • admin
  • authentication
  • anonymous
  • iis
  • ntlm
Read More

Interactive Profiling Middleware

Based on [Extended Profiling Middleware](http://djangosnippets.org/snippets/605/), this version allows interactive sorting of functions and inspection of SQL queries.

  • middleware
  • profile
  • hotshot
Read More

Database cleanup

***About*** I tried to dump data from my database (manage.py dumpdata) and I couldn't do it because of error: User matching query does not exists I found out that my database was filled with garbage: entries those foreigners were deleted. My table's engine is MyISAM so it allows for these lost entries to exist. I had to cleanup my database before I do datadump, so I've written a script which worked fine for me. ***Usage*** Place this script in same directory with your settings.py and run it: `python db_cleanup.py` ***Disclaimer*** Backup your data :)

  • dumpdata
Read More

"Autoconnect" model decorator, easy pre_save and post_save signal connection

This method allows you to define pre_save and post_save signal connections for your decorators in a little more clean way. Instead of calling `pre_save.connect(some_func, sender=MyModel)`, or perhaps `pre_save.connect(MyModel.some_static_func, sender=MyModel)`, you can simply define the pre_save method right on your model. The @autoconnect decorator will look for pre_save and post_save methods, and will convert them to static methods, with "self" being the instance of the model.

  • pre_save
  • post_save
  • signal-connect
Read More