save image from url to django ImageField
Saves image from a url into django's ImageField in a model. Uses [requests](http://pypi.python.org/pypi/requests/) library.
- django
- image
- requests
- remote
Snippet List
Better slugify
Better slugify function for national characters. Source of original script: http://trac.django-fr.org/browser/site/trunk/project/links/slughifi.py?rev=47
- unicode
- slugify
- slughifi
Django model objects and querysets dehydration/hydration
Dehydrates objects that can be dictionaries, lists or tuples containing django model objects or django querysets. For each of those, it creates a smaller/dehydrated version of it for saving in cache or pickling. The reverse operation is also provided so dehydrated objects can also be re-hydrated. *Example:* >>> import pickle >>> users = list(User.objects.all()[:20]) >>> print users [<User: Indiana Jones>, <User: Bilbo Baggins>, ...] >>> pickled_users = pickle.dumps(users) >>> print len(pickled_users) 17546 >>> dehydrated_users = dehydrate(users) >>> pickled_dehydrated_users = pickle.dumps(dehydrated_users) >>> rehydrated_users = hydrate(pickle.loads(pickled_dehydrated_users)) >>> print rehydrated_users [<User: Indiana Jones>, <User: Bilbo Baggins>, ...] >>> print len(pickled_dehydrated_users) 1471
- models
- orm
- queryset
- hydrate
- dehydrate
UTC-based astimezone filter
A version of http://djangosnippets.org/snippets/2388/ which assumes UTC-based dates. This is when you store dates in UTC (as you should), and want to display them in your site's local timezone, and you notice that Django's timesince/time template tags still do not support timezones.
- timezone
- utc
- timezones
- times
Property Attributes in Memcache
Memcached Property Attributes ----------------------------- Setting the attribute will store the value in memcached; accessing the attribute will retrieve from memcached. Most useful as a way of simulating memcached "fields" on model instances. See the docstring for details.
- cache
- memcached
- descriptors
ClearableFileInput with image preview
This widget allows you to display preview images with adjustable width and length of the link: [example](http://img526.imageshack.us/img526/6588/screenshotat20111026215.png) AdvancedFileInput(preview=True, image_width=200) For other files, you can adjust the length of the link without preview: [example](http://img845.imageshack.us/img845/6588/screenshotat20111026215.png) AdvancedFileInput(preview=False, url_length=30) by default, parameters are: preview = True url_length = 30 image_width = 200
- imagefield
- preview
- imagepreview
- previews-on-imagefield
Disable ordering in the admin for a model
Django admin orders models by their primary key by default, which can be undesirable on very large tables. This shows how to disable any ordering on a model. Note that this behavior is fixed in 1.4 trunk.
- admin
- ordering
"Ukrainian telephone number" model and form fields.
Fields are validate Ukrainian phone numbers in popular formats.
- form_field
- model_field
How to rename processes
Rename apache (or any) processes to be easily identified from ps output.
- apache
- wsgi
- process
Remove old fields on dumpdata generated json
A small script that takes a manage.py dumpdata generated json file, and removes fields of the specified models. I needed this because i kept my initial data on a json file and after I removed a field on one of my models, the script wouldn't work anymore.
- json
- loaddata
- fixture
- dumpdata
- migrate
- removed field
Get Client IP Behind Proxy
If your application server is behind a proxy, `request.META["REMOTE_ADDR"]` will likely return the proxy server's IP, not the client's IP. The proxy server will usually provide the client's IP in the `HTTP_X_FORWARDED_FOR` header. This util function checks both headers. I use it behind Amazon's Elastic Load Balancer (ELB).
- request
- ip
Persistent Session Debugging with Django Debug Toolbar
When using [django debug toolbar](https://github.com/django-debug-toolbar/django-debug-toolbar), I like to be able to turn debugging on and off without having to edit my settings file. This callback makes that possible. Add `?debug=on` to the URL to turn debugging on. It will remain on in the current session until you turn it off with `?debug=off`. Make sure your session middleware comes before your debug toolbar middleware.
- session
- debug
- debug-toolbar
Custom CSS class in Form with template tag filter
It was based in: http://djangosnippets.org/snippets/1586/ Instead of doing this: 'attribute_name = forms.CharField(widget=forms.TextInput(attrs={'class':'special'}))` You can do this in your template: {{ form|cssclass:"attribute_name:special_class"|cssclass:"other_attribute:special_class" }}
- filter
- templatetag
- css
- form
- class
Haystack objects in one query
Actually the best way to handle this is to use built-in http://docs.haystacksearch.org/dev/searchqueryset_api.html#load-all I just missed it while checking documentation and wrote this crappy snippet!
- django
- haystack
- SearchQuerySet
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