I use this snippet to save images to my imagefields on django models. This uses the very awesome requests library, so install it first pip install requests You probably want to have this be done on a celery queu, if the image is big enough.
The problem with Django's default Radio button widget is that it puts the buttons in a vertical format and the documentation is somewhat silent on how to make them horizontal. If you are dealing with a long list of buttons then veritical is probably the way to go but if you are dealing with "YES/NO" situation or any other boolean choice then you will probably want them horizontal. Basically I just took the code and even the explanation from here: https://wikis.utexas.edu/display/~bm6432/Django-Modifying+RadioSelect+Widget+to+have+horizontal+buttons
This code is for set one register on admin if exist more than 1 register you can not delete it or add more. Only set mymodel
1) Install django-extensions (requires werkzeug) 2) Paste snippet into settings.py 3) manage.py runserver_plus Now you should be able to open files in textmate by clicking the file links in the werkzeug error pages. It will also take you to the correct line number and highlight files that are in your project directory in a different color.
Updating fields that allow for NULLs must take care about those NULLs. Use case: `Message.objects.filter(id=1).update(price=CF('price', 0) + 7)` `Message.objects.filter(id=1).update(status=CF('status') // 's')` Works for postgres. Supposedly works for mysql. Didn't test with other backends.
Useful when you want to keep only one instance of a model to be the default one. This is a decorative way of doing the same as in http://djangosnippets.org/snippets/1830/ Can this be made better as a class decorator (not having to declare explicitly the save method) ?
Register django views
If you use this pattern to track changes in the auth user table: from django.contrib.auth.models import User from reversion.helpers import patch_admin patch_admin(User) you can't see important changes, since a version is created for every login if a user. If you want to get rid of changes which only change unimportant stuff you can use this middleware. This middleware can be used for every model. Just use this pattern in your settings: REVERSION_CLEAN={ 'django.contrib.auth': {'User': ['last_login']}, }
Django-piston have two build-in authentication handlers, the HttpBasicAuthentication and OAuthAuthentication. This snippet give another choice which use the django auth. It can support ajax and normal request.
This code publishes an iCal file that can be subscribed to in Google Calendar. They change the way they interpret iCal data occasionally, so this may break, I'll try to keep it up to date. There is some crazy string replace stuff going on there, I haven't yet convinced vObject to format things properly. Feedback welcome. *Note: this works for my existing feeds, but if I add a new feed to GCal, the timezones are incorrect, I'm working on that.
This facilitates unit tests for model mixins in Django. For more info, see [my blog](https://michael.mior.ca/blog/unit-testing-django-model-mixins/).
It's often useful to dynamically create filter criteria, and Q objects are useful for that, but sometimes you need to make a combined Q composed of various alternates. This bit of code eases the awkwardness of creating the first Q so that there's a combiner, plus the odd case of no criteria.
The canonical notion of urls ending in slashes dates from a web where urls were used to access documents and files this is no longer the case so keeping your urls witouth trailing slashes makes them prettier. The problem is that many people/blogs/spiders/browsers could end up with a url with slashes which can be problematic for you SEO, or confuse users. This script is for sites with no trailing slash dicipline in their urls, and to prevent everybody getting a horrible 404 for a simple slash you just got to remove it and issue a permanent redirect (301) and you'll get your pretty urls your cake and eat it too. I must stress, you will have to edit all your public urls removing the slashes like so: url(r'^login$', login,} If you forget, to edit them and visit the url, your browser will remember the redirect and you'll have to clean the browsing history to fix it.
Template filter that truncates the text when it exceeds a certain number of characters. It deletes the last word only if partial. Adds '...' at the end of the text, only if truncated. Examples (text == 'Lorem ipsum dolor sit amet', len(text) == 26) {{ text|truncatewords_by_chars:30 }} 'Lorem ipsum dolor sit amet' {{ text|truncatewords_by_chars:25 }} 'Lorem ipsum dolor sit...' {{ text|truncatewords_by_chars:21 }} 'Lorem ipsum dolor sit...' {{ text|truncatewords_by_chars:20 }} 'Lorem ipsum dolor...' By Davide Muzzarelli
Template filter that divides a list into an exact number of columns. The number of columns is guaranteed. Example (list == [1,2,3,4,5,6,7,8,9,10]): {% for column in list|columns:3 %} <ul> {% for item in column %} <li>{{ item }}</li> {% endfor %} </ul> {% endfor %} Result: <ul> <li>1</li> <li>2</li> <li>3</li> <li>4</li> </ul> <ul> <li>5</li> <li>6</li> <li>7</li> </ul> <ul> <li>8</li> <li>9</li> <li>10</li> </ul> By Davide Muzzarelli