Different number of extra formsets in add/change view of ModelAdmin.
Small usability feature to show one number of additional formsets for new object & another for created.
- admin
- formset
- inline formset
Snippet List
Changing queryset of a ModelChoiceField
This snippet shows how to add additional parameters to the queryset of a ModelChoiceField, enabling you to for instance filter the query.
- dynamic
- queryset
- custom
- ModelChoiceField
Enable AWS ELB with SSL Termination
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).
- SSL
- Middleware
- AWS
- Cloud
Automatic slug generation signal
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)
- slug
- slugify
- automatic
Class that converts object to view.
Class that takes a normal none derived class and converts it into a view. The methods return simple datastructures which makes it easier to test.
- views
- test
Callable short_description (or other Meaningful Method Attributes)
The django admin (as of 1.3) doesn't allow for short_description (and other ModelAdmin function attributes) to be a callable. Until that happens, this handy snippet allows you to return dynamic descriptions. Note, I haven't actually tested this yet -- but I plan to when I have the free time.
- admin
- callables
LoginRequiredMixin
Provides a mixin view class that requires logged-in user.
- view
- mixin
- class
- login-required
When saving in admin it will call model save() twice.
When I save this in admin, it will call model save() twice Django version 1.2.3, using settings 'admin.development' Development server is running at http://127.0.0.1:8080/ Quit the server with CONTROL-C. [18/May/2011 10:08:22] "GET /admin/onixcodes/bookbatch/ HTTP/1.1" 200 38211 [18/May/2011 10:08:22] "GET /admin/jsi18n/ HTTP/1.1" 200 4256 [18/May/2011 10:08:29] "GET /admin/onixcodes/bookbatch/55/ HTTP/1.1" 200 9811 [18/May/2011 10:08:29] "GET /admin/jsi18n/ HTTP/1.1" 200 4256 save!! save!! [18/May/2011 10:08:33] "POST /admin/onixcodes/bookbatch/55/ HTTP/1.1" 302 0 [18/May/2011 10:08:33] "GET /admin/onixcodes/bookbatch/ HTTP/1.1" 200 38364 [18/May/2011 10:08:33] "GET /admin/jsi18n/ HTTP/1.1" 200 4256 Anyone has any suggestion? Thanks.
- admin
- save()
- twice
Pygmentify a code using template filter
The above snippet can be added as a custom filter for rendering code snippets in django templates. A simple '|render' next to any source code will do. To add css, use the following command to generate css file. pygmentize -S emacs -f html > pygments-colorful.css And link this css file to the template.
- template
- django
- pygments
- custom-filters
Other translation block
Use in a with statement to set the translation to another locale for a block >>> from django.utils.translation import ugettext >>> ugettext('title') u'title' >>> with Translation('fr') as locale: ...: print locale.locale ...: print ugettext('title') ...: ...: fr titre >>> ugettext('title') u'title'
- i18n
- translation
CollectionFrom (GeometryCollection <-> Geometry Fields!)
Motivation: We can't use GeometryCollections to do filters, etc in GeoDjango due to incomplete underlying libraries. But with this CollectionFrom field we can get all the benefits of working with GeometryCollections but still query based on points, lines, polys. If you're using GeometryCollectionFields and see this error: DatabaseError: Relate Operation called with a LWGEOMCOLLECTION type. This is unsupported. Then this will probably be helpful for you.
- geodjango
- geo
- geometrycollection
Convert String Uppercase and Lowercase
To convert string to lower case replace upper() for lower()
- string
- uppercase
- lowercase
Simple template tag to do |stringformat filter with format from a variable
Formats a django variable using a python string formatting as specified in another template variable. Similar to |stringformat. Takes two arguments: the django template variable with the item to be formatted and the django template variable containing the format string. {% pyformat number formatstringvar %} Place this file in `appname/templatetags/pyformat.py` and you're good.
- template-tag
- string-formatting
South introspection rules for TimeZoneFields
TimeZoneField is not supported with South 0.7. This snippet adds a custom rule to the introspection rules for TimeZoneField. The code is found in the following thread, and fixed according to the latest version of TimeZoneField. http://groups.google.com/group/south-users/browse_thread/thread/34a05331140ee4dd **Usage** Simplest way is to save this snippet in a south_rules.py file and add an import in the models.py.
- timezones
- south
- timezonefield
Use the development server on the network
To let the development server use the network you must use the ip of your machine.
- runserver