Prettify HTML5 middleware
Slightly updated version of http://djangosnippets.org/snippets/172/ . Supports new HTML5 tags (even though tidy doesn't).
- middleware
- tidy
- standard
- html5
Snippet List
tag to store a settings value as template variable
Get any value from settings.py as a template variable. The variable can then be used in conditional tags. E.g. to show a link to a help page only if it the help page url is defined in settings.py {% load get_setting %} {% get_setting MY_HELP_URL as help_url %} {% if help_url %}<a href="{% help_url|safe %}">Help</a>{% endif %}
- template
- tag
- templatetag
- settings
CSV serializer
CSV serialization for models. Can be used via the dumpdata/loaddata management commands or programmatically using the django.core.serializers module. Supports multiple header lines and natural keys. Add the following to settings.py: SERIALIZATION_MODULES = { 'csv' : 'path.to.csv_serializer', } Examples of usage: $ python manage.py dumpdata --format csv auth.user > users.csv from django.core import serializers csvdata = serializers.serialize('csv', Foo.objects.all()) To run the regression tests distributed with the Django tarball: $ cd /path/to/Django-1.2.x/tests $ PYTHONPATH=/path/to/myproject ./runtests.py --settings=myproject.settings serializers_regress
- csv
- serializer
Choices class
Yet another class to simplify field choices creation. Keeps order, allows i18n. Before: ONLINE = 0 OFFLINE = 1 STATES = ( (ONLINE, _('online')), (OFFLINE, _('offline')) ) state = models.IntegerField(choices=STATES, default=OFFLINE) After: STATES = Choices( ('ONLINE', _('online')), ('OFFLINE', _('offline')) ) state = models.IntegerField(choices=STATES, default=STATES.OFFLINE)
- models
- choices
Resolve URLs to view name
This snippet suplies a resolve_to_name function that takes in a path and resolves it to a view name or view function name (given that the path is actually defined in your urlconf). Example: === urlconf ==== urlpatterns = patterns('' (r'/some/url', 'app.views.view'), (r'/some/other/url', 'app.views.other.view', {}, 'this_is_a_named_view'), ) === example usage in interpreter === >>> from some.where import resolve_to_name >>> print resolve_to_name('/some/url') 'app.views.view' >>> print resolve_to_name('/some/other/url') 'this_is_a_named_view'
- view
- url
- resolve
- name
Loading templates by app path
Loading templates by path app.template_name -> app/templates/template_name.html app.subdir.template_name -> app/templates/subdir/template_name.html Usage: append in settings.TEMPLATE_LOADERS and using render_to('app.index', context)
- template
- loader
Datetime widget
This widget uses: [DHTML Calendar Widget](http://www.dynarch.com/projects/calendar/). It is very simple implementation but may be easily extended/changed/refined. 1. Necessary files: First download calendar package and extract it to your MEDIA folder (MEDIA/calendar/...) You'll also need a small gif that will be shown as a button that allows user to display calendar. By default this 'gif' is searched at '[MEDIA]images/calbutton.gif' but you may change this path in the code (calbtn variable). You need to download or create callbutton.gif image by yourself (it is not included). 2. Include css and js files in your page (as shown in the comment in the code). 3. In form code assign a widget to a field as usual (see newforms documentation for more details). 4. It is possible to change date format by specifying different value for 'dformat' attribute of widget class. If you get javascript errors while trying to open calendar try to use english translation file (calendar-en.js). I've found that some translations, eg. Polish, are broken by default. In this case you should override your language translation with english one and translate it by yourself (it is easy).
- datetime
- date
- calendar
- widget
- dhtml
Browser Verification
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.
- middleware
- browsers
- validation
Edit users on Group admin
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.
- admin
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
Mobile Device Middleware
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.
- middleware
- template
- mobile
ManyToMany field with newforms
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.
- newforms
- multiplechoicefield
- manytomany
StateField
Based on [CountryField](http://www.djangosnippets.org/snippets/494/).
- model
- field
- state
- statefield
OrderField
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.
- models
- fields
- field
- order
- orderfield
- integerfield
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