A page we used on Curse to stop users who are new, who are using old browsers (ones who usually have extreme issues with CSS handling) and recommend they update. Can easily be modified to suit your needs.
Ordinarily, it is not possible to edit Group membership from the Group admin because the m2m relationship is defined on User. With a custom form, it is possible to add a ModelMultipleChoiceField for this purpose. The trick is to populate the initial value for the form field and save the form data properly. One of the gotchas I found was that the admin framework saves ModelForms with commit=False and uses the save_m2m method when the group is finally saved. In order to preserve this functionality, I wrap the save_m2m method when commit=False.
When using Amazon's ELB with SSL termination, Django needs to know that the requests are secure. You need to use the special indication given on the request (HTTP_X_FORWARDED_PROTO) to determine that. This middleware will do that for you. The second part is forcing requests to HTTPS in case they are not. This part is not mandatory and could probably be done using configuration rules in your HTTP server. Note that I did it for the specific site, simply to avoid redirecting requests which are not of interest in the first place. This snippet is based on work done in [Django-Heroism](https://github.com/rossdakin/django-heroism).
Middleware class that checks the user agent against a known list of strings found in mobile devices, and if matched it then tries to determine the name of the template being rendered based on the convention of having every view use a keyword arg called "template". It then adds "mobile" to the template name and if the mobile template exists, it will override the "template" arg for the view with the mobile template name.
In editing a ManyToMany field in a form, it is necessary to clear the entries in the bridge table before adding new entries. So first save the new entries, remove the old entries in the multiple choice field and then add the new entries. It is also necessary to add the commit_on_success decorator to make sure that the whole process is in one transaction.
Based on [CountryField](http://www.djangosnippets.org/snippets/494/).
OrderField for models from http://ianonpython.blogspot.com/2008/08/orderfield-for-django-models.html and updated to use a django aggregation function. This field sets a default value as an auto-increment of the maximum value of the field +1.
A pre_save signal that will automatically generate a slug for your model based on the "title" attribute, and will store the new slug in the "slug" attribute. USAGE: from django.db.models.signals import pre_save from YOURPACKAGE import slug_generator pre_save.connect(slug_generator, sender=YOURMODEL)
This adds an 'fbshell' management command which starts up a Python shell with an authenticated [pyfacebook](http://code.google.com/p/pyfacebook/) instance ready to make requests. This is very useful for testing out facebook requests or performing administration tasks without hooking a debugger into your application. This snippet should be saved to /yourproject/management/commands/fbshell.py See [custom management commands](http://docs.djangoproject.com/en/dev/howto/custom-management-commands/) for a description of how this works. If you are already using pyfacebook in your app then you'll already have the right settings, so just run : $ python manage.py fbshell A browser window will pop up, prompting you for authentication (unless you're already logged in to facebook). Press enter in the shell when you're finished this, and you'll be dropped into a shell with the session key, uuid, and name printed. Now you can use the facebook instance: >>> facebook.friends.get() >>> [...] If you haven't used pyfacebook in your app, you'll need at least the following settings in your settings.py FACEBOOK_API_KEY = 'your_api_key' FACEBOOK_SECRET_KEY = 'your_secret_key'
This snippet uses the admin FilterSelectMultiple widget in normal forms. Earlier I tried this without the **internationalization javascript** and failed, so I looked around the web and found couple of posts, they worked but suggest many customizations. I learnt from them that they had this *jsi18n* javascript included. I included it with mine and it worked. I have written a [detailed post](http://www.rohanjain.in/coding/2011/06/20/django-using-admin-horizontal-filter-in-forms/) about this.
Use it like below: totals = MyClass.aggregate( is_enabled_yes=CountCase('is_enabled', when=True), is_enabled_no=CountCase('is_enabled', when=False), count_if=CountCase('id', case="another_field in ('a','b')", when=True), )
In case when you need a list of related objects for particular queryset
Modified version of [Profiling Middleware](http://www.djangosnippets.org/snippets/186/) Prints profile results for method, additionally groups results by files and by modules (for django uses top level modules as groups). Works for Windows. Usage: append ?prof or &prof= to any URL pointing to django application after adding ProfileMiddleware to middlewares in yours settings.py. NOTICE: ProfileMiddleware uses hotshot profiler which is not thread safe.
Based on the discussion at Empty Thoughts (http://blog.michaeltrier.com/2007/8/6/age-in-years-calculation) I built a quick and dirty custom filter. Save this as a file in your "templatetags" folder. I called mine "calculate_age.py" and then in your template "{% load calculate_age %}" then use it, "{{ object.birthdate|age }}"
Sometimes the only way to reproduce a bug on a production site is to login as the User who encountered it. This form allows you to login as any user on the site. **Usage** @staff_member_required def login_as(request, template="login_as.html"): data = request.POST or None form = LoginAsForm(data, request=request) if form.is_valid() form.save() return HttpResponseRedirect(settings.LOGIN_REDIRECT_URL) ...