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BBCode templatefilter (generate & strip)

Parse a string for [BBCode](http://en.wikipedia.org/wiki/Bbcode) and generate it to (X)HTML by using the [postmarkup libary](http://code.google.com/p/postmarkup/). In your template for generating (X)HTML: {% load bbcode %} {{ value|bbcode }} In your template for removing BBCode fragments: {% load bbcode %} {{ value|strip_bbcode }}

  • template
  • templatetag
  • templatefilter
  • bbcode
  • xhmtl
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Author: b23
  • 2
  • 8

View Permission Decorator Helper

This is a simple helper to make custom permission decorators for Django views. Perhaps you have an edit_comment view which you want to make sure current user is the owner of: >def edit_comment(request, comment_id): >>if request.user == Comment(id=comment_id).user: >>>... do authorized things ... >>else: >>>... do unauthorized things ... >>... >>... In this view, you might do a quick check `if request.user == Comment(id=comment_id).user`, however you now need to duplicate this code all over the place whenever you want to check if a comment is owned by the current user. Instead, you can use the built in login_required decorator, and your own decorator to do the test: >@permission >def user_owns_comment(request, comment_id): >>return request.user == Comment(id=comment_id) > >@login_required >@user_owns_comment >def edit(request, comment_id): >> ... >> ... >> ... The "tester" function will post a message using the messages module built into Django, and redirect the user to the root. It allows access and executes the view if the tester function returns anything that evaluates to True. Your permission tester should either strictly specify the same arguments as the view, or take additional *args, and **kwargs to prevent syntax errors on extra arguments being passed along.

  • view
  • decorator
  • permission
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Inline truncate by character number

Sometimes I need to truncate a string after a number of characters, usually to avoid breaking the page layout. When the string we have to truncate is a filename I don't want to hide its extension so a user can easily recognize the file. My solution is add the ellipsis at the middle of the string converting `ALongLongLongTitleDocumentThatExemplifiesThisSnippet.txt` into `ALongLongLong...hisSnippet.txt`

  • filter
  • truncate
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Allow template tags in a Flatpage's content

** This tag, as shown, can cause problems (infinite recursion being one) if you don't use it correctly. ** Our internal CMS has a pages app similar to Flatpages, and a "chunks" app similar to [django-chunks](http://blog.clintecker.com/2008/jul/6/django-chunks/). Because most of our other apps are template-tag driven (FAQs, job postings, news, events, etc) I wanted a way to be able to write django template code right into a page or chunk's body from within the django admin. This tag will let you write django template code into, for example, a Flatpage's content and render it with the current context. So if you had a template tag called "get_latest_news" and wanted to add latest news to a flatpage, just enter this in the flatpage's content: {% get_latest_news 5 as news %} {% for article in news %} <li>{{ article.title }}</li> {% endfor %} This ability has proven extremely useful to us. Please note this is just a "summary" snippet to illustrate the concept. Use in a production environment should include more robust error checking.

  • template
  • flatpages
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HTML color code field

A CharField (Model) that checks that the value is a valid HTML color code (Hex triplet) like #FFEE00.

  • model
  • db
  • color
  • hexcode
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Author: b23
  • 1
  • 4

auto_now using signals

There has been some discussion about removing `auto_now` and `auto_now_add` some time ago. `auto_now_add` can be replaced be using a callable default value, `auto_now` can't. So I wrote this litte function for my current project (older ones still use `auto_add`) to fill the gap...but I'm not sure if `auto_now` will be removed at all.

  • datetime
  • model
  • auto_now
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More information about users and groups in user admin

Add-on for auth app of newforms-admin branch, adding more information about users and their groups at user and group list in admin interface. Also, nice example on customization of contributed django admin apps. It adds the following to the user list interface: fields for is_superuser and is_staff, last login time; by default, short names of groups user is in (mousehover to see full names) It adds the following to the to group list interface: list of users in your groups. To enable, just put it somewhere and import it from your main urls.py: import useradmin

  • admin
  • newforms-admin
  • customization
  • users
  • groups
  • roles
  • information
  • nfa
  • supervising
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Switch/case conditional tags

This tag allow you to use C-like switch tag in your templates. It is useful for sequencial and repetitive `{% ifequal %}` tags. To install it in your project, you just need to follow [these instructions](http://www.djangoproject.com/documentation/templates_python/#extending-the-template-system)

  • tag
  • conditional
  • switch
  • case
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SSL Redirect Middleware and testing

While we're on the topic of SSLRedirect (See snippet 240 and 880) here's what I add to the end of my ssl middleware module, so that SSLRedirect wont break my automated testing. It simply creates a dummy middleware class that removes the SSL argument, but does not do any redirecting. If you were to simply remove the middleware from settings, the extra SSL argument will then get passed on to all the relevant views. Of course, you'll need to define a TESTING variable in settings, or change this to something else like settings.DEBUG. Having the separate variable for testing allows you to run your server in DEBUG mode without side effects like the change above.

  • middleware
  • ssl
  • testing
  • redirect
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ModelForm-based create_update generic views

This is a ModelForms-based rewrite of the create_object and update_object generic views, with a few added features. The views now accept a "form_class" argument optionally in place of the "model" argument, so you can create and tweak your own ModelForm to pass in. They also accept a "pre_save" callback that can make any additional changes to the created or updated instance (based on request.user, for instance) before it is saved to the DB. Usage: just save the code in a file anywhere on the PythonPath and use the create_object and update_object functions as views in your urls.py.

  • newforms
  • views
  • generic
  • update
  • modelforms
  • create
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