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All snippets written in Python

2957 snippets

Snippet List

Logging Middleware

This is a simple Logging Middleware that uses the python logging functions. Simply drop this snippet in a file in your project such as `logmw.py` (don't try to call it `logging.py` though), then add the class to MIDDLEWARE_CLASSES in your settings file. (for instance, `'mysite.logmw.LoggingMiddleware'`) Updated 8/25/08: added PhonyLogger class that swallows log messages when logging is disabled, so code doesn't have to care if it's on or not (thanks to goodness for suggesting the idea, though I missed it before)

  • middleware
  • logging
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DRY with common model fields (another way)

Some time you want to add some common fields to a group of models, for example, in a **Generalization/Specialization** relationship. One could have a base model as the generalization class and specialized models with a foreign key to that base model with an unique attribute but I don't like it that way so, I just do this code to add some commons attributes to a lot of models. If you have many models that all share the same fields, this might be an option. The fields are added directly to each model, e.g. while they will be duplicated on the database level, you only have to define them once in your **python** code. This code is a cleaner way(I think!!!) to do it and will do the same that [this one](http://www.djangosnippets.org/snippets/317/). I hope this piece of code will be useful for you.

  • models
  • model
  • dry
  • common
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Inspect object debugging tag

Simple template tag that allows you to inspect an object in the context for debugging. It will inspect django models and forms using introspection. Dicts and lists are formatted to truncate long data. Pretty much everything else just displays the __str__ representation + class name. Example output: http://dsanity.net/introspectiontag.html Usage: put tag code as file introspection.py in your templatetags directory. Place the html template in your template path under "inspect_object.html". Then in your template: {% load introspection %} {% inspect_object obj "test object" %} The first parameter is the object to inspect, the second is the name used for display purposes.

  • tag
  • debug
  • debugging
  • introspection
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django image bundle template tag library

Django ImageBundle tag, an implementation of image bundle by google: http://code.google.com/p/google-web-toolkit/wiki/ImageBundleDesign. Here is how to use it: http://www.djangosnippets.org/snippets/278/

  • django
  • imagebundle
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locale based on domain

This is something we're using over at Curse to keep things clean and simple for our users. * We needed a url for any language code (which the domain provides) vs a cookie * We needed a to only store 2 letter codes in the db for each language (thus the key doesn't always match the code) This consists of two major modifications: * LANGUAGES in settings.py is a completely different format and would need changed based on your setup * the locale middleware has a couple absolute instances of where to point a user by default.

  • middleware
  • i18n
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TerminalLoggingMiddleware

A handy ANSI-colored logging mechanism to display the SQL queries and times in the terminal when using django-admin.py runserver. DEBUG mode must be true for this to work.

  • sql
  • middleware
  • terminal
  • logging
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Simple Contact Form

Simple contact form, using a javascript form checker which you can use any you want to you can just modify the form in the way you want to. The form checker I use I include in the 'base.html' page before the </head> section end. You can use it freely. http://media.xorl.de/form.js . A lot of this code is comprised of other peoples forms that didn't suit the simple purpose of a *really* basic contact form which I wanted, so I rebuilt it up from bits and pieces to make a simple basic form.

  • python
  • form
  • contact
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encode_mailto

This is a django filter which will create an html mailto link when you use the syntax: {{ "[email protected]"|encode_mailto:"Name" }} Results in: <a href="mailto:[email protected]">Name</a> Except everything is encoded as html digits. The encoding is a string of html hex and decimal entities generated randomly. If you simply want a string encoding use: {{ "name"|encode_string }} This was inspired by John Gruber's [Markdown](http://daringfireball.net/projects/markdown/syntax#autolink) project

  • filter
  • email
  • encode
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filter dates to user profile's timezone

I have users in many timezones and I let them set their preferred display timezone in their user profile as a string (validated aginst the pytz valid timezones). This is a filter that takes a datetime as input and as an argument the user to figure out the timezone from. It requires that there is a user profile model with a 'timezone' field. If a specific user does not have a user profile we fall back on the settings.TIME_ZONE. If the datetime is naieve then we again fallback on the settings.TIME_ZONE. It requires the 'pytz' module: [http://pytz.sourceforge.net/](http://pytz.sourceforge.net/) Use: `{{ post.created|user_tz:user|date:"D, M j, Y H:i" }}` The example is assuming a context in which the 'user' variable refers to a User object.

  • filter
  • timezone
  • userprofile
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Sanitize text field HTML (here from the Dojo Toolkit Editor2 widget)

When using a JavaScript WYSIWYG editor widget for text area content, the resulting HTML should be sanitized so no unallowed HTML tags (esp. script tags) are present. The [BeautifulSoup](http://www.crummy.com/software/BeautifulSoup/) library handles HTML processing in the solution presented above, so you should place it in the Python path. The snippet also assumes that you have [the Dojo Toolkit](http://dojotoolkit.org/) and its Editor2 widget loaded on your page. **Note**: this snippet was originally written for use with Dojo Toolkit 0.4, and it hasn't been updated for 0.9 or 1.0.

  • forms
  • html
  • wysiwyg
  • dojo
  • security
  • sanitize
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Filter on Multiple M2M Objects Simultaneously

This snippet should allow you to do queries not before possible using Django's ORM. It allows you to "Split" up the m2m object you are filtering on. This is best described by example: Suppose you have `Article` and `Tag`, where `Article` has a m2m relation with `Tag` (`related_name = 'tag'`). If I run: from django.db.models.query import Q Article.objects.filter(Q(tag__value = 'A') & Q(tag__value = 'B')) > # no results I would expect to get no results (there are no tags with both a value of 'A' and 'B'). However, I *would* like to somehow get a list of articles with tags meeting that criteria. Using this snippet, you can: from django.db.models.query import Q from path.to.qsplit import QSplit Article.objects.filter(QSplit(Q(tag__value = 'A')) & QSplit(Q(tag__value = 'B'))) > # articles with both tags So now they are split into different `Tag` entries. Notice how the `QSplit()` constructor takes a `Q` object---it's possible to give this any complicated Q-type expression.

  • models
  • q
  • m2m
  • db
  • orm
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Authenticate with Email Address

This code gives you the ability to authenticate a user by their email address instead of the username. I've also added the ability to authenticate via LDAP. Some code used from this [snippet](http://www.djangosnippets.org/snippets/74/)

  • admin
  • user
  • email
  • authenticate
  • ldap
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Akismet Webservice

A short little bit of code to test for comment spam against Akimet. Use: a = Akismet('<AkismetKey>', 'http://sneeu.com/blog/') a.verify_key() print a.comment_check( comment_author='...', comment_author_email='[email protected]', user_ip='10.0.0.1', comment_content="""Comment content!""" )

  • rest
  • python
  • akismet
  • spam
  • webservice
  • comment
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