Login

All snippets written in Python

2958 snippets

Snippet List

Display arbitrary models

Template tag for displaying a list of arbitrary models. Useful for life-stream kind of pages that display blog entries, links, photos etc ordered by date. [Example](http://bjornkri.com) **Usage:** something like: {% for object in object_list %} {% display_excerpt object %} {% endfor %} Will look for *app/model_excerpt.html* by default, and fall back on a generic *display_excerpt.html*, or returns the object's string representation as a last fallback. *display_excerpt.html* might look something like: <a href="{{ object.get_absolute_url }}">{{ object }}</a> Any model you throw at it should have a *get_absolute_url* and a string representation of some sort, so this gives you the bare minimum of a title and a link to a detail page. *display_excerpt* takes an optional argument to set the template suffix. This might be handy for generating different formatting for feeds, for instance: {% for object in object_list %} {% display_excerpt object "feed" %} {% endfor %} This will look for app/model_feed.html to render the object. Got lots of help from mattmcc on #django for this one, thanks!

  • display
  • excerpt
  • lifestream
Read More

SnippySnip

** Help me get better! If you vote (either way) please leave a comment if you have time and say what was good or bad. I appreciate any and all feedback. Thanks! ** I keep finding places in my apps where I need an isolated snippet of text that can periodically be changed from the admin interface. Most often it's html but sometimes it's text, javascript, or css. Use it like so: (Assuming this snippet lives in snippy_snip/models.py and there is a snippet named "Welcome Message" in the database) from snippy_snip.models import snip msg = snip("Welcome Message") Or, you might populate a parameter hash for a template: def showpage(request): params = { 'welcome': snip('Welcome Message'), 'video1': snip('Video 1'), 'NavHeader': snip('Nav.SectionHeader'), } return render_to_response("main.html", params) For clarity, *params* might look something like this: welcome -> "Welcome to our site. Please use the menu on the left..." video1 - > a YouTube snippet NavHeader -> Some HTML which comprises the top of a navigation menu. This is a very simple bit of code but I've found it very useful. It isn't intended for instant changes... Your snippets will cache like anything else, which may cause confusion if you expect immediate changes. And it's probably not great for a high traffic site, but for my moderate traffic sites and workgroup apps I've found it useful. (This code was created for 0.96, but I'm working to bring it into alignment with the latest svn version of Django, see comments.)

  • text
  • javascript
  • html
  • snippet
Read More

Update All Apps to Latest Revision

This snippet is based on [#844](http://www.djangosnippets.org/snippets/844/) and updates all apps in the current directory using hg, svn, git or bzr.

  • update
  • svn
  • git
  • hg
  • bzr
Read More

Admin definition converter (for newforms-admin)

A script I wrote a little while ago to help speed up newforms-admin conversion. From memory it works best when run from an old-forms installation, but it is still useful post-conversion. There are some features missing, but it's supposed to be a starter. Just install this command and run: ./manange.py port2nfa > admin.py (To install, copy the file to management/commands/port2nfa.py in an app somewhere)

  • newforms
  • admin
  • command
Read More

newforms-admin done the old way

If you view Django's admin pages as a convenience for experts, and so don't see the point in heavily modifying it beyond a few simple things like list_display and some ordering or filtering options, you may feel that newforms-admin makes things harder, not easier. ... Well, there's some truth to that, but it turns out that fighting newforms-admin is doomed - too much has changed to make the fight to preserve the old simplicity winnable to any useful extent, so I'm withdrawing this.

  • newforms-admin
Read More

Ordering a queryset by _CHOICES

I recently needed to sort a list of objects by cardinal direction clock-wise. Since this is different than alphabetical, and I didn't want to use a dictionary to map to integers, here is what I came up with. There may be a cleaner way to do this by overriding some object methods, but I just thought I'd put this out there anyway.

  • choices
  • ordering
Read More

Creator/updater fields for admin

This ModelAdmin class sets fields for models saved in admin corresponding to the user that created the object and the user that last updated the object. Trivial for the current model, but a little more involved to make it work with inlines. The fields still show up as drop-downs (`select`) in the admin, but I fixed that with a little jQuery: $(function(){ $("select[id*='creator'], select[id*='updater']").each(function(){ var user = $('option:selected', this).text(); $(this).siblings('.add-another').hide(); $(this).hide(); $(this).after(user); }); }); This could easily be subverted, but with trusted users, it makes for a quick and dirty read-only field.

  • admin
  • newforms-admin
Read More

Caching XHTML render_to_response

This code improves on Django's render_to_response shortcut function in the following ways: 1. If the caller does not provide a MIME type, and the caller is passing a RequestContext, it interrogates the request to determine if the HTTP client supports application/xhtml+xml encoding. If so, it sets the request type to application/xhtml+xml to override the HttpRequest class's default mime type of text/html. 2. It caches parsed templates in its own cache to improve performance. If you aren't using XHTML in your templates, you may choose to comment out the code that tests for and sets the application/xhtml+xml MIME type. I place this code in a file named "util.py" in my application. In my views, I write "from app.util import render_to_response" where I used to write "from django.shortcuts import render_to_response". Note that the caching functionality provided by this code means that you will need to recycle your Django instance when you make template changes. Instructions for doing this depend on how you have deployed your Django application.

  • render_to_response
  • template
  • cache
  • html
  • xhtml
Read More

Gzip decorator

Rather than using the full GZipMiddleware, you may want to just compress some views. This decorator lets you do that. @gzip_compress def your_view(request, ...): ....

  • middleware
  • decorator
  • gzip
Read More

Using Google Apps Premium infrastructure for user management

To create a lower entry barrier to logging into our intranet I created a very simple backend using Google Apps Premium provisioning API (http://code.google.com/apis/apps/gdata_provisioning_api_v2.0_reference.html). This enables controlling access for your users based on their status in your Google Apps instance. *(NOTE! Since the provisioning API is only available in the Premium version of Google Apps you first need to upgrade if you haven't done so already)* Requirements: You need Google Data libraries for python. They can be downloaded from http://code.google.com/p/gdata-python-client/downloads/list Google Apps Premium -- User used by the script must have admin rights

  • authentication
  • login
  • auth
  • google
  • google-apps
  • auth-backend
Read More

FilteredSelect

Displays as an ordinary selectbox with an additional text-input for filtering the options. An adaption of the example at [1] for use with Django. The code assumes the java script from [2] is downloaded into your media folder. Remember to output your form's media, for instance like: "{{form.media|safe}}", somewhere above your form. **License:** [2] by Mr Patrick Fitzgerald is licensed under GPL and the python code written by myself is GPL as well. **References:** 1. http://www.barelyfitz.com/projects/filterlist/index.php/ 2. http://www.barelyfitz.com/projects/filterlist/filterlist.js

  • javascript
  • widget
Read More