render_to_json

**Explanation:** I think this shortcut can be util for who uses JSON many times and does not want to write same code everytime. **Setup:** Saves the snippet as `myproject/utils.py` or add the code to some place in your project with same ends. **Use in a view:** from myproject.utils import render_to_json from django.contrib.admin.models import User def json_view(request): admin_user = User.objects.get(username='admin') return render_to_json( 'json/example.json', locals(), ) **Update:** This code can be used as complement to [http://www.djangosnippets.org/snippets/154/](JsonResponse snippet) too.

• template
• json

Tue 04 Sep 2012 Read More

Get Latitude and Longitude from google maps

I use this to integrate a google map in a form renderd by newforms. If someone click on the map and set a icon, the Latitude and Longitude data goes into the 2 form fields. You need to generate a google API key (http://www.google.com/apis/maps/signup.html) for the GOOGLE_KEY variable.

• google
• latitude
• longitude
• googlemaps

Tue 04 Sep 2012 Read More

simple email validation function

This very basic function I was missing in this part of the Django Documentation when creating a custom MultiEmailField: http://docs.djangoproject.com/en/dev/ref/forms/validation/

• email
• validation

Tue 04 Sep 2012 Read More

in_group template filter

Allows you to search if a user belongs to a given group. Along the same lines as snippet [390](http://www.djangosnippets.org/snippets/390/), but uses a regular ``if`` tag so it is more flexible. (Updated for efficiency. Running a boolean test on a QuerySet avoids a bit of unnecessary overhead.) (Updated to accept a list of groups.)

• template
• filter
• group

Mon 03 Sep 2012 Read More

Automatic Manager Choice Filters

Automatically adds filter methods to your objects manager based on their display name. class Foo(models.Model): MOO_CHOICES=((1,'foo'),(2,'bar')) moo = models.IntegerField(choices=MOO_CHOICES) objects = ChoiceFilterManager('moo',MOO_CHOICES) Foo.objects.foo() Foo.objects.bar()

• managers
• choices

Mon 03 Sep 2012 Read More

simple guestbook

a simple guestbook. the guestbook-area and entries can (and should) be styled by CSS. The template extends a "base.html", which should contain a "content" block. The Model is very simple without moderation, admin-comment or any other advanced features, but its easy to extend. i.e. add a Field "active=models.BooleanField()" and add "exclude=['active']" to the forms.EntryForm.Meta class for moderated Entries. Now you can switch the entries on/off in the admin-interface by setting active=True/False this snippet is public domain, use for everything you want. UPDATE: added basic SPAM protection (a do_not_fill field), but you might want to try a captcha-form/Field like snippet 812

• guestbook
• guest
• book

Sat 01 Sep 2012 Read More

CitySelector

CitySelector is a jquery widget, allowing to pick cities from DB, filled by django_ipgeobase application. Also it includes widget for django forms, based on mentioned jquery plugin, views and urlconf, required to provide interaction between widget and DB and middleware, populating request with correspondent location. Visit https://bitbucket.org/JustDelight/city_selector

• jquery
• widget
• geolocation
• jqueryui
• ru
• django_ipgeobase

Fri 31 Aug 2012 Read More

Filter by taggit tags in the admin

A FilterSpec that can be used to filter by taggit tags in the admin. To use, simply import this module (for example in `models.py`), and add the name of your TaggableManager field in the list_filter attribute of your ModelAdmin class.

• filter
• admin
• taggit

Fri 31 Aug 2012 Read More

"If in" templatetag

It's been a while, but I think I made this by copying and pasting the default {% if %} tag and modifying it. Does what it says, lets you test for inclusion in a list, in templates, like so: {% ifin item list %}.

• template
• lists
• tag
• contains

Wed 29 Aug 2012 Read More

Allow any view (probably a generic view) to accept captured URL variables into extra_context.

If your URL pattern looks like: `urlpatterns = patterns('django.views.generic.create_update', url(r'^obj/(?P<obj_id>\d+)/new_thing$', create_object, {'form_class': ThingForm, 'template_name': 'thing/new_thing.html', extra_context: {:this":"that"}), )` You will receive an error, because the create_update view doesn't have a parameter called "obj_id". Supposing you want that variable in the URL, and furthermore let's say you wanted to do something with it in the template. With this function, you can wrap the view, and add the parameter capture_to_context, which maps URL variables to template variables: `urlpatterns = patterns('django.views.generic.create_update', url(r'^obj/(?P<obj_id>\d+)/new_thing$', view_url_vars_to_context(create_object), {'form_class': ThingForm, 'template_name': 'thing/new_thing.html', 'url_vars_to_context':{'obj_id':'objID'}, extra_context: {:this":"that"}}), )` Now objID will be a variable in your template, with the value given to obj_id. This is good for generic views, but there's no reason you couldn't use it for your own views if you really wanted, as long as you had an "extra_context" parameter.

• urls
• views

Wed 29 Aug 2012 Read More

jQuery Autocomplete

A merged version of the many jQuery autocomplete widgets. See [1](http://php.scripts.psu.edu/rja171/widgets/autocomplete.php) and [2](http://www.dyve.net/jquery/?autocomplete) for more information.

• jquery
• autocomplete

Wed 29 Aug 2012 Read More

Content Moderator

This snippet is for [django-flag](http://code.google.com/p/django-flag/) Pinax app to make it generic moderator for any content model. You don't need to modify neither your model nor your views to moderate your flagged content objects.

• generic
• pinax

Wed 29 Aug 2012 Read More

ImageURLField for forms

A URL field specifically for images, which can validate details about the filesize, dimensions and format of an image at a given URL, without having to read the entire image into memory. Requires [Python Imaging Library](http://www.pythonware.com/library/pil/). *4th October, 2008* - updated for 1.0 compatibility.

• image
• pil
• validation
• url
• form
• field

Tue 28 Aug 2012 Read More

ResizeImageField

ResizeImageField ================ (extension of RemovableImageField) ================================= by Wim Feijen, Go2People. What does it do? ---------------- ResizeImageField is a replacement for django's ImageField. It has two major benefits: 1. Creation of thumbnails and scaled images. 1. Extends the image upload form and adds a preview and a checkbox to remove the existing image. It's easy to use: - Replace ImageField by ResizeImageField - No further changes are necessary Requirements: ------------- Working installation of PIL, the Python Imaging Library Usage ----- - add resize_image to your app - add resize_filters.py to your templatetags - in settings.py, set a PHOTO_DIR, f.e. photos/original - in models.py, add: - from settings import PHOTO_DIR - from resize_image import ResizeImageField - photo = ResizeImageField(upload_to=PHOTO_DIR, blank=True) Scaled images will be stored in 'photos/scaled', thumbnails will be stored in 'photos/thumb'. Access your images from your template. Add:: {% load resize_filters %} {{ address.photo.url|thumb }} or:: {{ address.photo.url|scaled }} Defaults ------- - Scaled images are max. 200x200 pixels by default - Thumbnails are 50x50 pixels. Override the default behaviour in settings.py Scaling is done by PIL's thumbnail function, transparency is conserved. Credits ------ This code is an adaptation from python snippet 636 by tomZ: "Updated Filefield / ImageField with a delete checkbox"

• image
• thumbnail
• resize
• scale
• delete
• ImageField
• ResizeImageField
• removable

Mon 27 Aug 2012 Read More

Multipart Templated Email

A replacement for sending mail that takes the name of a template which exists in both text and html formats, and uses these to create a multipart email populated with the given context.

• template
• email

Fri 24 Aug 2012 Read More