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create and authenticate an anonymous user

If you want anonymous visitors to your site, or parts of your site to be authenticated as real users so that you can treat them as such in your views and models, use this snippet. Add the above AuthenticationBackendAnonymous middleware into AUTHENTICATION_BACKENDS in your settings.py and use the snippet anonymous_or_real(request) in your views, which returns a user. Comment out the bit where it creates a profile if you are not using profiles.

  • authentication
  • anonymous
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Multiple Model Forms feeding a single Form to use with a single FormView

This is a simple example of feeding multiple Forms into a single Form via its constructor method, to work with a single FormView and reap the benefits of Django's awesome Form validation system. It's a Form class that defines (or takes via an argument to its constructor) *parent* Forms (that can, for instance, be ModelForms, to take advantage of the automatic Field generation) and takes its fields from there. An advanced user won't be impressed by this, so excuse if this snippet is out of place, but a rather inexperienced user such as myself might find it interesting and make him willing to explore Django's internals a bit more.

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jQuery color picker model field

This uses the Really Simple Color Picker in jQuery: http://www.web2media.net/laktek/2008/10/27/really-simple-color-picker-in-jquery/ Get source from there or GitHub: http://github.com/laktek/really-simple-color-picker/tree/master

  • models
  • admin
  • jquery
  • widgets
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django smartround filter

rounds floats in more human readable format e.g. 341.123434 mUSD -> 341mUSD 0.45345345 mUSD -> 0.5 mUSD 0.034545 mUSD -> 0.03 mUSD 0.0014545 mUSD -> 0.001 mUSD etc.

  • smart round
  • smartfloatformat
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Custom SQL via subquery

You can use custom SQL statements with the existing database API by creating a subquery specified via the `tables` parameter of `extra`. (This has only been tested with MySQL and may not work with all database back-ends.)

  • group-by
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Custom DRF browsable API interface for InBBoxFilter of django-rest-framework-gis

[DRF browsable API interface](http://www.django-rest-framework.org/api-guide/filtering/#customizing-the-interface) for django-rest-framework-gis [InBBoxFilter](https://github.com/djangonauts/django-rest-framework-gis#inbboxfilter) Tested with Django==1.10.5 django-filter==1.0.1 djangorestframework==3.5.4 djangorestframework-gis==0.11 ![Screenshot](http://joxi.ru/8AnzxLDTOEgeAO.png)

  • django
  • django-rest-framework
  • django-rest-framework-gis
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ModelChoiceField with optiongroups

This is a ModelChoiceField where the choices are rendered in optiongroups (this is already posible with a normal Choicefield) For this to work properly the queryset you supply should already be ordered the way you want (i.e. by the group_by_field first, then any sub-ordering) See [related blog article](http://anentropic.wordpress.com/2010/03/23/django-optiongroups-for-your-modelchoice-field/)

  • modelchoicefield
  • optiongroup
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REMOVE IMAGEFIELD ATTACHMENT IN DJANGO

File cleanup callback used to emulate the old delete behavior using signals. Initially django deleted linked files when an object containing a File/ImageField was deleted. Usage: >>> from django.db.models.signals import post_delete >>> post_delete.connect(file_cleanup, sender=MyModel, dispatch_uid="mymodel.file_cleanup")

  • filefield
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IPAddressField with CIDR support

Based on #1381 Use this piece of code to add IPv4/IPv6 and network support to Django. An IPAddressField allows you to find IP's for a given subnet. An IPNetworkField allows you to find a subnet for a given IP or find a subnet within a subnet. For starters, simply paste it into a new file in your app called fields.py. IPAddressField example # models.py from fields import IPAddressField class IPTest(models.Model): ip = IPAddressField() To search for an IP within a given subnet from ipaddr import IPNetwork IPTest.objects.filter(ip__in=IPNetwork('10.0.0.0/24')) IPNetworkField example # models.py from fields import IPNetworkField, IPNetworkQuerySet class IPTest(models.Model): objects = IPNetworkQuerySet.as_manager() network = IPNetworkField() To search for a subnet with a given IP from ipaddr import IPAddress IPTest.objects.network('network', IPAddress('10.0.0.1'))

  • cidr
  • ipv4
  • ipv6
  • ipaddress
  • ipnetwork
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