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Snippet List
Load File From URL Widget
Rather simple usage, modelforms/in the admin: class CustomAdminForm(forms.ModelForm): class Meta: model = Something widgets = { 'image': URLFileInput(default_exts=[".png", ".gif", ".jpg"]), } class SomethingAdmin(admin.ModelAdmin): form = CustomAdminForm admin.site.register(Something, SomethingAdmin) Basically, this will pull the image from the URL instead of only pulling it from your harddrive for upload. Also accepts optional default_exts argument which limits the file types. Defaults to images.
- imagefield
- filefield
- urlfield
Delete template fragment cache
Template: {% load cache %} {% cache 1800 posts blog.pk %} {# Show posts #} {% endcache %} Code: def view(request, pk): # Code blog = get_object_or_404(Blog, pk=pk) delete_template_fragment_cache('posts', blog.pk) # Code
- template
- cache
- fragment
Gallerific template for django-photologue
Template to make a galleriffic gallery for django photologue. Uses the settings from this demo http://www.twospy.com/galleriffic/example-2.html This is now the default template for the django-cms photologue plugin http://www.django-cms.org/en/extensions/cmsplugin-photologue/detail/
- photologue
- photo-gallery
- django-cms
decorator to add GUID Field to Django Models
A decorator to add a GUID Field to a Django Model. There are other bits of code out there that do similar things, but it was important for the field to have a unique value _before_ it is saved in the database. The contribute_to_class method therefore registers the field class with the post_init signal of the class it's being added to. The handler for that signal is where field initialization is done.
- models
- fields
- decorators
Generic csv export admin action
A generic admin action to export selected objects as csv file. The csv file contains a first line with header information build from the models field names followed by the actual data rows. Access is limited to staff users. Requires django-1.1. **Usage:** Add the code to your project, e.g. a file called actions.py in the project root. Register the action in your apps admin.py: from myproject.actions import export_as_csv class MyAdmin(admin.ModelAdmin): actions = [export_as_csv]
- admin
- generic
- export
- csv
- action
AjaxForm Base Classes
These base form classes add a method to return error messages as HTML encoded as JSON from Django, optionally passing in an argument to strip tags out. The method can be called in your view after checking that your form is valid. There is a ModelForm and Form class to use depending on your needs. The sample jQuery function will take the errors returned as json, loop over the errors and insert the error after each field. If you're using a form prefix, you'll need to add a hidden field to hold the value for the prefix. The `__all__` error(s), which are not bound to a field are appended to the end of the form, which you could easily reposition. Happy coding!
- ajax
- json
- form
Read settings from local_settings.py
Each installation of our Django site has slightly different settings -- namely, which database to use. Developers can provide a `local_settings.py` file which lets them override (or, just as usefully, extend) settings that are in `settings.py`. Subversion is told to ignore `local_settings.py`, so it's never checked in. If `local_settings.py` is missing, the site refuses to work. We include a `local_settings_example.py` file so that new developers can get started more quickly.
- settings
- development
- deployment
- deploy
- production
- local
- local-settings
- local-deployment
Class-based view mixin for flatpages
Allows you to include content from flatpages in class-based views. You can specify the url for the flatpage you want, or let it be determined by request.path.
- mixin
- flatpages
- class-based-views
Serialize all models from tastypie resource
Serializes all models of a resource to json. Borrowed from https://github.com/toastdriven/django-tastypie/issues/442
- json
- tastypie
CompressedTextField for Django 1.4+
This snippet *updates* http://www.djangosnippets.org/snippets/383/ and http://www.djangosnippets.org/snippets/1495/ for Django 1.4+, and adds support for sqlite3 and south. Original snippet text: A CompressedTextField to transparently save data gzipped in the database and uncompress at retrieval.
- text
- model
- field
- compressed
- gzip
- south
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
Test and Restart Memcached Server
Request-phase cache middleware that checks to make sure the Cache server is running. Starting it if it is not. This is run for every request, it checks to see if it can get a defined item out of the cache, if that fails it tries to set it. Failing that it decides the server is probably crashed, so goes though and attempts to connect to the server. Failing a connection it will launch a new server. This is probably not useful on large scale multi server deployments as they likely have their own testing for when services crash, but I am using it in a shared hosting environment where I have to run my own copy of memcache manually and cannot setup proper services testing, so I use this to just make sure the cache server is still running.
- middleware
- cache
- memcached
Retrieve human-readable value from choices tuple or value from dict
Will help you retrieve the value from a dictionary with a supplied key, or the human-readable value from a choices tuple. Works as follows: To retrieve the value of a dict: `{{ crime_rates_dict|getval:"Chicago" }}` <-- will return value of `crime_rates_dict["Chicago"]` To retrieve the human-readable value from a choices tuple: `{{ country.COUNTRIES|getval:"US" }}` <-- will return "United States" in `COUNTRIES = (("US", "United States"),)`
- template
- templatetag
- choices
- dict
- tuple
LoginRequiredMixin
Provides a mixin view class that requires logged-in user.
- view
- mixin
- class
- login-required