This is a ModelAdmin base class you can use to make foreign key references to User a bit nicer in admin. In addition to showing a user's username, it also shows their full name too (if they have one and it differs from the username). **2009-08-14**: updated to handle many to many fields and easily configure whether to always show the username (if it differs from full name)
Inserts the output of a view, using fully qualified view name (and then some args), a or local Django URL. {% view view_or_url arg[ arg2] k=v [k2=v2...] %} This might be helpful if you are trying to do 'on-server' AJAX of page panels. Most browsers can call back to the server to get panels of content asynchonously, whilst others (such as mobiles that don't support AJAX very well) can have a template that embeds the output of the URL synchronously into the main page. Yay! Go the mobile web! Follow standard templatetag instructions for installing. **IMPORTANT**: the calling template must receive a context variable called 'request' containing the original HttpRequest. This means you should be OK with permissions and other session state. **ALSO NOTE**: that middleware is not invoked on this 'inner' view. Example usage... Using a view name (or something that evaluates to a view name): {% view "mymodule.views.inner" "value" %} {% view "mymodule.views.inner" keyword="value" %} {% view "mymodule.views.inner" arg_expr %} {% view "mymodule.views.inner" keyword=arg_expr %} {% view view_expr "value" %} {% view view_expr keyword="value" %} {% view view_expr arg_expr %} {% view view_expr keyword=arg_expr %} Using a URL (or something that evaluates to a URL): {% view "/inner" %} {% view url_expr %} (Note that every argument will be evaluated against context except for the names of any keyword arguments. If you're warped enough to need evaluated keyword names, then you're probably smart enough to add this yourself!)
I work with multiple projects, many of which have multiple custom management commands defined. It can be hard to remember them, and slow to pick them out of the "manage.py help" list. This quickie command lists all of a project's custom commands (along with their help text). Writing it was easy after looking at the source of django.core.management. Open questions include: how do you decide which app to put this command in? Should this command list itself?
This is a conditional templatetag decorator that makes it *very* easy to write template tags that can be used as conditions. This can help avoid template boilerplate code (e.g. setting a variable in your template to be used in a condition). All you have to do is define a function with expected parameters that returns True or False. Examples are in the code.
Alex Gaynor presented this idiom at EuroDjangoCon 2009.
Generate QR Code image from a string with the Google charts API http://code.google.com/intl/fr-FR/apis/chart/types.html#qrcodes Exemple usage in a template {{ my_string|qrcode:"my alt" }} will return the image tag with * src: http://chart.apis.google.com/chart?chs=150x150&cht=qr&chl=my_string&choe=UTF-8 * alt: my alt"
By enabling this backend: AUTHENTICATION_BACKENDS = ( 'path.to.my.backends.CaseInsensitiveModelBackend', ) Your users will now be able to log in with their username, no matter whether the letters are upper- or lower-case.
Truncates a string after a given length, keeping the last word complete. This filter is more precise than the default `truncatewords` filter. Words length vary too much, 10 words may result in 40 or 70 characters, so cutting by character count makes more sense. There is a [blog post](http://ricobl.wordpress.com/2008/12/23/templates-django-filtro-truncatewords-melhorado/) about this snippet (in Portuguese).
As I was unable to find good examples to render a Form with two or more inlineformsets. Therefor I have posted this to Django snippets. This code is little different from another snippet with a Form with one InlineFormSet (the prefixes are necessary in this situation). The example shows a person's data together with two inline formsets (phonenumbers and addresses) for a person. You can add, update and delete from this form.
As I was unable to find good examples to render an inlineformset together, I have posted this to Django snippets. The example shows a person's data together with the phonenumbers for that person. You can add, update and delete from this form.
Often I want fields in my models to be unique - Django's `unique` works too late in model form validation and will throw an exception unless you check for it by hand. This is a bit of code that cleans up the boiler plate of checking if different fields are unique. Set `exclude_initial` to `False` if you want to raise an error if the unique field cannot be set to whatever value the instance had before. **Update** Thanks fnl for rightly pointing out that Django's `unique=True` does check for this - just make sure to pass `instance=obj` when you're initializing your forms. _HOWEVER_ a problem you'll typically run into with this is though you want a field to unique, you also want multiple entries to be able to be `blank`. This can help you!
The default server_error view uses Context instead of RequestContext. If you were depending on a context processor to make MEDIA_URL available in your templates, your 500.html template will not render with the correct image paths. This handler adds MEDIA_URL (and nothing else) back to the context that is sent to the template.
This provides some basic cryptographic fields using pyCrypto. All encryption/decription is done transparently and defaults to use AES. Example usage: class DefferredJunk(models.Model): semi_secret = EncryptedCharField(max_length=255)
Example: @limit("global", 3, 10, per_ip=True) def view(request, ...): The example limits the view to one request every 3 seconds per ip address. The limit is shared by every view that uses the string "global" (first parameter), which is an arbitrary string. Request succeed until the accumulated requested time in seconds (second parameter) exceeds the limit (third parameter).
sometimes,you need to lock one or more table to ensure the integrity of data.may be it's help to you.