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Parse custom template tag's args or kwargs

Enhanced version of snippet [1113](http://djangosnippets.org/snippets/1113/) Usage example (not self-contained): @register.tag def groupurl(parser, token): ''' Syntax:: {% groupurl view_name group [key=val, [key=val, ...]] [as varname] %} Example:: <a href="{% groupurl blog_detail group slug=blog.slug %}">{{ blog.name }}</a> ''' bits = token.contents.split() tag_name = bits[0] if len(bits) < 3: raise template.TemplateSyntaxError("'%s' takes tag at least 2 arguments (path to a view and a group)" % (tag_name,) bits_iter = iter(bits[1:]) # view_name + group and url kwargs args, kwargs = parse_args_and_kwargs(parser, bits_iter, stop_test='as', tagname=tag_name) if len(args) != 2: raise template.TemplateSyntaxError("'%s' takes exactly two non-kwargs (path to a view and a group)" % (tag_name,)) view_name, group = args # as var asvar = None for bit in bits_iter: asvar = bit return GroupURLNode(view_name, group, kwargs, asvar)

  • tag
  • templatetag
  • parse
  • args
  • kwargs
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slug_and_slash_to_dash - modified slugify for urls

This filter converts slashes to spaces in a a sting and then slugify's the result. However, it ignores leading and trailing slashes. For example, it can take something like this: /some/url/with-an-existing-slug/ And turn it into this: some-url-with-an-existing-slug The filter was originally written to use the *curent* url as the `disqus_identifier` for Disqus comments. For example: {{ request.META.PATH_INFO|slug_and_slash_to_dash }}

  • template
  • filter
  • slugify
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Testing for failure in management commands

Because BaseCommand catches all CommandError exceptions and turns them into nicely formatted strings before calling sys.exit(1), it can be tricky to properly test failure. Normally, this is great, but it makes testing that a command fails when we expect to a little harder. That's where this snippet comes in. It redirects sys.stderr to an instance StringIO where we can monitor what's output and catches the BaseException raised by sys.exit(1). Form here, it's trivial to test that a management command fails exactly as you'd expect it to.

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mkrange - create a range() inside a template - variable/filter support for range values

Ok, I just took [wolever](http://djangosnippets.org/users/wolever/)'s snippet at [http://djangosnippets.org/snippets/1926/](http://djangosnippets.org/snippets/1926/) and added template variable/filter support for range values. For instance, you could write something like this: `{% mkrange 1 tool_page.paginator.num_pages|add:"1" as page_range %}` I'm just learning python and django, so any advice would be appreciated.

  • django
  • python
  • custom tag
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RadioSelectWithHelpText

A Django form widget which displays help text for individual items in a set of radio buttons. It overrides the RadioSelect widget, adding a small bit of HTML after each <input> element, with the help text for each item. It was developed for a Django Dash project I'm working on (called transphorm.me), so isn't as feature-rich as it could be, but if you have any trouble installing it - or if I've miscopied any of my code in my rush - please let me know.

  • newforms
  • forms
  • widgets
  • radioselect
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comments_allowed function for your model/...

Use this if you want to check if commenting is allowed for a certain object/model/... in a template. Like this; `{% if not object.comments_allowed %} <p>Comments are now closed.</p> {% else %} {% render_comment_form for object %} {% endif %}` You can replace the CommentModerator class with your own custom moderation class ofcourse.

  • comments
  • moderation
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A ModelChoiceField with support for title in options based on a field in the model

ModelChoiceTitleField is a ModelChoiceField descendent that creates <OPTIONS> with title elements based on the field specified in title_source_field: priority=ModelChoiceTitleField(Priority.objects.all(), initial=Priority.objects.get(default=True).id, title_source_field='long_description') That will generate a `<SELECT>` element looking like: <select name="priority" id="id_priority"> <option value="1" title="Some extremely important task.">Emergency</option> ... </select> In the `<option>` above, the title was retrieved from the `long_description` field for the instance of the Priority class. The word Emergency came from a call to the instance of the Priority class' `__unicode__()` method. The value of the option is the PK for the instance of the Priority class.

  • ModelChoiceField
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CurrentSessionIDMiddleware

The middleware assigns a unique identifier for session. The session id doesn't depend of session or whatever else. It only need cookies to be turned on. The session id is reassigned after client close a browser. Identifier of the session could be read from request: request.current_session_id. You can setup name of the cookie in yours settings module (FLASH_SESSION_COOKIE_NAME). request.current_session_id is lazy. It means the ID will be assigned and cookie will be returned to client after first usage.

  • middleware
  • session
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Middleware to resolve current URL to module and view

Add it to MIDDLEWARE_CLASSES and you will get request.current_view getting values like "connection.views.index" or "django.views.static.serve" - one example usage is to show different help text based on current view name. EDIT: actually, you can use process_view middleware function where you automatically get current_view as first parameter.

  • middleware
  • view
  • url
  • resolve
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Simple Syslog Logging Class with Decorator

Simple logging decorator. Logs the function name along with the message. `Jul 14 16:10:42 mtzion test_func: 1 two` Define SYSLOG_FACILITY in settings.py. import syslog SYSLOG_FACILITY = syslog.LOG_LOCAL1

  • decorator
  • logging
  • syslog
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Template filter to turn Twitter names into links

Quick and simple twitterize filter to turn Twitter usernames into profile links on your own sites. Add the filter code to your own template tags (http://docs.djangoproject.com/en/dev/howto/custom-template-tags/).

  • twitter
  • twtterize
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Get actual child model in multi-table inheritance

A common problem (it hit the Django mailinglist a couple of times) is that if you get `models.Topping.objects.all()`, you get a list of toppings, although they stand for other classes such as `SalamiTopping` or `CheeseTopping`. If you need the actual object, just derive `Topping` from `PolymorphicModel`, and say `topping.actual_instance`. This will give you e.g. a `SalamiTopping`. Sometimes you just want to check for the actual class. You can get it by saying `topping.content_type.model_class()`. There is a slight performance impact when creating objects because they have to be saved twice. NEWS: A good alternative to this approach is the [InheritanceManager](https://github.com/carljm/django-model-utils/blob/master/README.rst).

  • models
  • child-model
  • multi-table-inheritance
  • polymorphy
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Use MEDIA_URL in flatpages with SSL

This is a copy of [snippet 654](http://djangosnippets.org/snippets/654/), modified to allow dynamic MEDIA_URL, as you might need that for SSL in combination with [snippet 1754](http://djangosnippets.org/snippets/1754/). This is a template filter to enable the use of the MEDIA_URL setting in content from the flatpages database table. It searches for {{ MEDIA_URL }} and replaces it with the current MEDIA_URL added by a context processor. Note: To set up, drop the above code into a file called media_url.py in your templatetags directory in one of your INSTALLED_APPS, and add the filter to your flatpages template like so: {% load media_url %} {{ flatpage.content|media_url:MEDIA_URL }}

  • filter
  • ssl
  • context
  • flatpages
  • processor
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