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simple DomainsAliasMiddleware

Permit to redirect desired domain name to the 'domain' of Site app. Useful if you have different domains name for the same website. #1. Add to your settings DOMAINS_ALIAS like this: DOMAINS_ALIAS = ( 'my-second-domain.com', 'www.my-second-domain.com', 'third-domain.com', 'www.third-domain.com', ) notice: all these domains are redirected to the **domain** db entry of Site ID. #2. add all these domains to ServerAlias directive in your vhost apache configuration. #3. enable the middleware by adding to your MIDDLEWARE_CLASSES: MIDDLEWARE_CLASSES = ( ... 'utils.middleware.domainsalias.DomainsAliasMiddleware', ... )

  • middleware
  • redirect
  • domain
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"Dynamic" form with a hidden field

This code demonstrates two simple techniques: 1. so-called "dynamic" forms, in which the form is created at run time by the model 2. using a widget (forms.widgets.HiddenInput) for a field of the form. I feel like this could be highlighted more in the documentation. You need to do something similar to get a textarea (forms.CharField(widget=forms.widgets.Textarea()) and it took me too long to figure this out. There are, no doubt, good reasons not to do what I'm doing here the way I'm doing it. Peanut gallery?

  • dynamic
  • form
  • field
  • hidden
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Filter to adjust forloop.counter across pages in a paginated view

**Update:** Never mind. See [dc's comment](http://www.djangosnippets.org/snippets/1391/#c1763) below for a much easier way to do this. I recently had to write a template for a paginated view which displayed a serial number for each `object` in the `object_list`. I normally use `forloop.counter` for general purpose serial numbers. However this did not work with paginated views as the counter gets reset in each page. This caused the serial numbers to go from 1 to #-of-results-in-the-page and then repeat. **Assumptions:** The `adjust_for_pagination` filter adjusts the value of `forloop.counter` based on the current page. `Page` and `is_paginated` variables are expected to be present in the context. These should respectively denote the current page number (1 based) and if the results are paginated. `RESULTS_PER_PAGE` is currently taken from the settings file. I couldn't think of a way to pass this value also from the template.

  • filters
  • pagination
  • forloop.counter
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ChoiceField with widget in choice

This code creates a widget that we used to generate a list of radiobuttons as follows: * Radio button 1 --Widget__1 * Radio button 2 --Widget__2 * Radio button 3 --Widget__3 How to use it is: `ImagenForm class (forms.ModelForm): widget1 = forms.BooleanField () widget2 = forms.TextInput widget3 = forms.ModelChoiceField (queryset = Modelo.objects.all ()) widget4 = forms.FileInput optConListas = ChoiceWithOtherField (choices = [(2, 'widget1' widget1), (3, 'widget2' widget3.widget), (4, "widget2" widget2), (5, 'widget4' widget4)])`

  • django
  • choice
  • choicefield
  • widget
  • alfonso
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monkey-patch django to use jinja2 templates for 404/500 pages and 3rd-party apps

This is heavily inspired by [http://code.google.com/p/smorgasbord/](http://code.google.com/p/smorgasbord/). But that couldn't reuse an existing jinja2 Environment, nor set filters on the Environment it created. This code assumes that you have `env` declared previously in the file as your Jinja2 Environment instance. In `settings.py`, you should set KEEP_DJANGO_TEMPLATES = ( '/django/contrib/', ) so that your Django admin still works. You can also set any other places that you do want to use Django templates there.

  • templates
  • jinja2
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truncatestring filter

Simple filter that truncates string to specific number of letters. Example usage in template: `{{ myvariable|truncatestring:20 }}` if myvariable is "That is my long string", the result will be: "That is my long s...". Put the code into templatetags/.

  • filter
  • string
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Nested commit_on_success

This is a simple modification to the standard transaction.commit_on_success decorator that is aware of existing transactions. If a managed transaction is already active then the wrapped function is called directly, assuming the active transaction will clean up as appropriate. Otherwise, a standard commit_on_success is performed. I'm using this to wrap the save() method of models that manipulate other related models on save, e.g: @nested_commit_on_success def save(self): super(MyClass,self).save() for m in other_models: self.fix_up_other_model(m) m.save()

  • transaction
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Author: rfk
  • 2
  • 1

MAC address field

Supported MAC formats: aa:bb:cc:dd:ee:ff, separator : or - aabbccddeeff both lower case and upper case

  • model
  • field
  • custom-field
  • address
  • mac
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No Password E-mail

Sometimes when a Django site's authentication backend goes down, a login will fail with a 500 error. This has happened to me when using an LDAP backend for authentication. A glitch with the settings, or ldap temporarily disappearing can make logins flake out for a short period of time. That's fine, but when a 500 error occurs it e-mails detailed information about the error to the ADMINS. We like this behavior for most errors, but it is quite frustrating when it is a login form with a password as part of a POST. If it is one of us who gets our password e-mailed out, it's even more frustrating. It hits a mailing list first, and goes to the archives to be stored in plain text. It goes to several e-mail inboxes, some of which are not local inboxes. I decided that enough was enough. Drop this middleware in, and it will change a "password" field in the POST to twenty asterisks. This was the default way to display other sensitive settings on the DEBUG page, so I figured I'd be consistant with that. This snippet is distributed under the GPLv3 License http://www.gnu.org/licenses/gpl-3.0-standalone.html

  • middleware
  • password
  • exception
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unique_slugify

sorry, this is a duplicate post, original is here: http://www.djangosnippets.org/snippets/690/ no way to delete snippets

  • slug
  • slugify
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Temporary admin messages (MOTD)

This small app can display messages to users after they login and before they get to the normal landing page. This can be useful for displaying maintenance notices, information on new features, or a one-day-sale on shoes. To redirect to the MOTD view after login, change: `<input type="hidden" name="next" value="{{ next }}" />` to: `<input type="hidden" name="next" value="{% url django_motd.views.motd %}?next={{ next }}" />` in your login.html template.

  • admin
  • login
  • message
  • motd
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Unit Tests That Write Fixtures

This is a skeleton framework of a unittest for an app which will write out a fixture of the test database once the test has been done. I run this once for all apps, but you can limit which apps get serialized by modifying the self.apps value from get_apps (all apps) to a list of only certain apps. This script by default assumes that you have a SVN_DIR setting which points to the current working subversion directory, with a subdirectory of fixtures where it places `tests.json` upon completion. You may change this location as well. After running `python manage test` you can run `python manage loaddata fixtures/tests.json` to load in to the real database all of the test database fixtures. Feel free to edit at will, let me know of any changes that are helpful, and dont forget to fill in the `...`s

  • json
  • unittest
  • fixture
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django under apache / mod_fcgid

This recipe uses a modified version of Robin Dunn's fcgi.py module that adapts fcgi to wsgi and lets you run Django under mod_fcgid. One good thing about mod_fcgid is that it does all process management for you, which makes this setup quite straightforward. Also, since Robin's module works both in a cgi and fcgi context, switching a django site between cgi and fastcgi is a one-liner in the apache config, without any changes to python code or django config. CGI may be handy for development, since it loads all code (including changed code) on every request, yet lets you work in an environment that resembles production. Apache configuration examples are found in the comment at the beginning of the python module.

  • apache
  • fastcgi
  • cgi
  • mod_fcgid
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