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All snippets written in Python

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CSVImport

Importing data from other sources than SQL can be an annoyance. This script serves as a general tool for importing data from CSV files.

  • csv
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Multiple Delete in Admin

This snippet demonstrates the use of the SpecialOps patch ( [link here](http://hackermojo.com/mt-static/archives/2008/02/django-special-ops.html) )to the django 0.96 admin. Once you have the patch, adding actions like these is simple. You can use the @admin_action decorator on model and manager methods to expose them inside the admin. For manager methods, the method should accept a list of IDs. For model methods, only self should be required.

  • admin
  • multiple
  • delete
  • hooks
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Boxes as template tags

It's a template tag used to create boxes with nested divs (useful to keep the templates DRY). For example: {% menubox titlevar %} Content here {% endmenubox %} will generate the html with the nested divs div class=box div class=box-outer div class=box-inner Headline Content /div /div /div [more detail on this blog post](http://pedro.valelima.com/blog/2007/sep/26/boxes-template-tags/)

  • template-tag
  • box
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Smart append slash middleware

This middleware replaces the behavior of the APPEND_SLASH setting in the CommonMiddleware. Please set `APPEND_SLASH = False` and `SMART_APPEND_SLASH = True` if you are going to use this middleware. In your URL patterns, omit the trailing slash for URLs you want accessible without the slash. Include the slash for those URLs you wish to be automatically redirected from an URL with the slash missing. If a URL pattern exists both with and without a slash, they are treated as two distinct URLs and no redirection is done. Example urlpatterns = patterns('some_site.some_app.views', (r'^test/no_append$','test_no_append'), (r'^test/append/$','test_append'), (r'^test/distinct_url$', 'view_one'), (r'^test/distinct_url/$', 'view_two'), ) Behavior of URLs against the above patterns with SMART_APPEND_SLASH enabled: http://some_site/test/no_append → test_no_append() http://some_site/test/no_append/ → 404 http://some_site/test/append → http://some_site/test/append/ http://some_site/test/append/ → test_append() http://some_site/test/distinct_url → view_one() http://some_site/test/distinct_url/ → view_two() This module is also available [in our SVN repository](http://trac.ambitone.com/ambidjangolib/browser/trunk/middleware/common.py).

  • middleware
  • url
  • slash
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Another Memcache Status View

This was inspired by [this memcache status snippet](http://www.djangosnippets.org/snippets/54/) However, this version uses the quasi-internal cache._cache.get_status(), and it compiles a list of stats for each server that you specify in your CACHE_BACKEND setting.

  • memcache
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XFN Form Field

**This is a newforms field for XFN relationships.** It normalizes input by removing excess whitespace, converting to lowercase and removing duplicates. This field also validates the relationship according to the [XFN profile](http://gmpg.org/xfn/11): `me` can only appear by itself and, at most, one value from each of the family, friendship and geographical categories is allowed. The `XFN_*` constants would probably be imported from somewhere else in practice, but are included here for simplicity.

  • newforms
  • fields
  • forms
  • form
  • field
  • xfn
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Convert Unicode to ASCII

Unicode is great, but there are places where the conversion ends up with unintelligible characters. I first noticed this with curly quotes entered in forms on our site. `unicode_to_ascii` converts compound characters to close approximations in ASCII: such as umlaut-u to u, 1/2 (fraction glyph) to 1/2. You can add additional mappings in CHAR_REPLACEMENTS.

  • unicode
  • ascii
  • convert
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Make anything into a template

This is a quick and dirty way to reuse the Django templating system for your own ends. Just pop in the familiar Django template syntax into whatever content you like and any chunk of content can be a template. This is great if you need to wrap data in HTML (as in for a mass email). The best part about this is that your "template" can now be stored in a database, instead of just in the file system.

  • template
  • templating
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A custom 500 handler which is AJAX-aware

The default 500 handler does not take into consideration if the HTTP request made is an XMLHttpRequest. If it's an XHR, then it may not be a good idea to send back your default 500 HTML page. To use this custom 500 handler, just add the following to your urls.py: handler500 = 'my_project.my_app.views.my_500'

  • ajax
  • 500
  • handler
  • httprequest
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newforms and ModelForm

I noticed that form_for_* in newforms now carry deprecation warnings. This code is a minimal demonstration of how to use ModelForm as a replacement. Full information can be found on [Stereoplex](http://www.stereoplex.com/two-voices/django-modelform-and-newforms). Hope this helps you.

  • newforms
  • form_for_instance
  • modelclass
  • form_for_class
  • deprecated
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Field map for models

It seems like one way or another I always need to get access to a specific field of a Model object. The current way to do this is to iterate through the object's _meta.fields list, comparing with the `name` attribute. Why not just have a lookup of fields? If you paste this code at the bottom of your models.py file it will add a `field_map` attribute to the meta options. For example: `profile = User.objects.get(id=1).get_profile()` `upload_to = profile._meta.field_map['image_icon'].upload_to` ...

  • models
  • fields
  • meta
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packjs templatetag

Based on jspacker by Dean Edwards, Python port by Florian Schulze: http://www.crowproductions.de/repos/main/public/packer/jspacker.py Packs javascript Example usage:: {% packjs %} var a = 1; var b = 2; var c = 3; alert(a+b); {% endpackjs %} This example would return this script:: eval(function(p,a,c,k,e,d){e=function(c){return(c<a?"":e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--)d[c]=k[c]||c;k=[function(e){return d[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp("\\b"+e(c)+"\\b","g"),k[c]);return p}('0 5 = 1;\n 0 4 = 2;\n 0 7 = 3;\n 6(5+4);\n',8,8,'var||||b|a|alert|c'.split('|'),0,{}))

  • templatetag
  • javascript
  • pack
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Mathematical Captcha

Simple mathematical captcha where human is asked to solve a simple mathematical calculation like 2+3=?. Don't require database access or external libraries like PIL. To use MathCaptchaForm subclass it and add your fields. For example of usage and discussion about security of this captcha comparing with traditional image captcha please see my blog entry [Improved Mathematical Captcha](http://www.mysoftparade.com/blog/improved-mathematical-captcha/)

  • captcha
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