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Pre-delete signal function for deleting files a model

This snippit is meant to be used with the pre_delete signal to delete any files associated with a model instance before the instance is deleted. It will search the model instance for fields that are subclasses of FieldFile, and then delete the corresponding files. As such, it will work with any model field that is a subclass of FileField.

  • remove
  • delete
  • signals
  • file
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Unique naming for file uploads

This snippit can be used to generate unique file names for uploads. `upload_to` allows a callable, but only provides two arguments: `instance` and `filename`. In order to prevent dumping all of the files for a model into one directory, this utilizes the `partial` decorator from `functools`, which essentially allows adding an extra argument to the function. The returned path will be of the form: `[model name]/[field_name]/[random hash].[filename extension]`

  • files
  • path
  • naming
  • uploads
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Clean-ish memcached key generation

Based on [snippet #1212](http://djangosnippets.org/snippets/1212/) along with it's comments. Replaced the for loop with translate. example usage: from django.core.cache import cache from mysnippet import cache_key_clean expensive_func = lambda x: 'x{0}x'.format(x) input_string = "I wanted a nice value." key = cache_key_clean(input_string) result = cache.get(key) if result is None: result = expensive_func(input_string) cache.set(key, result)

  • memcache
  • cache
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django-thumbs black&white support

Based on the original http://code.google.com/p/django-thumbs/ Added South support too. Usage: ` photo = ImageWithThumbsField(upload_to='images', sizes=((125,125,True),(300,200),)` To retrieve image URL, exactly the same way as with ImageField: `my_object.photo.url` To retrieve thumbnails URL's just add the size to it: `my_object.photo.url_125x125` `my_object.photo.url_300x200` To convert to greyscale set the third attribute of size to True

  • thumbs
  • django-thumbs
  • grayscale
  • black and white
  • thumbsnails
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Alternative to Class Based Views

There is a lot of debate on whether there is a real future for the Django CBVs (class based views). Personally, I find them tedious, and just wanted a way to keep my views clean. So, here is a really minimalistic way of having class based views, without the fuss. This is a fork from: http://stackoverflow.com/questions/742/class-views-in-django http://djangosnippets.org/snippets/2041/

  • views
  • class
  • cbv
  • based
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yet another render_to_response decorator

This one takes a template path as an argument. Return dictionary with template values from your view. It's simple as: @render_to_template('posts/post_list.html') def api_get_all(request): return {'test': 'testing!'}

  • render_to_response
  • decorator
  • response
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Tastypie v0.9.11 LoginRequiredAuthorization

This is an Authorization class for [Tastypie](http://django-tastypie.readthedocs.org/en/latest/authentication_authorization.html) v0.9.11 (v0.9.12 changes how Authorization works). DjangoAuthorization checks specific permissions — `add_model`, `change_model`, `delete_model`, etc. If you don't need that level of permissions checking, this might be useful. It just makes sure the User is logged in. It's equivalent to the `login_required` decorator.

  • login_required
  • tastypie
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Fail Faster: unsafe_test Management Command

The faster you fail the faster you reach success. This management command runs tests within the django environment, but without a test database, hence the word "UNSAFE". It only runs unittests for a single application, which are not subclasses of django.test.TestCase. Django's TestCases are not supported because they attempt to purge the database. Turn this flaw into a feature by segregating testcases into those that either need or don't need the test database. This tool may not be useful in all cases, but in certain cases you can have more rapid testing iterations. I use it for certain utility applications. **Setup:** Place in <app_name>/management/commands/unsafe_test.py **Run:** $./manage.py unsafe_test <app_name>

  • management-command
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Django with AngularJS

This is a simpel snippet to prevent conflict between Django and AngularJS template syntax. It is possible to change the AngularJS syntax, but this can cause compatibility problems, so I figured that this was a better solution.

  • AngularJS
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