Login

All snippets written in Python

2956 snippets

Snippet List

Readonly Tabluar Inline

An Image says more than 100 words: [readonlytabularinline.png](http://img39.imageshack.us/img39/6555/readonlytabularinline.png) Use `editable_fields` to exclude some fields from being readonly.

  • admin
  • tabular-inlines
Read More

Auto-documenting Django Models with Sphinx

In my sphinx documentation I really wanted a nice clean list of the fields on my Django models. The most obvious way of doing this is to add ":param blah:" tags to the docstring, but this takes a long time to implement and violates DRY principles when you already have lots of nice help text in the model definition. Another way is to use "#:" comments on attributes, but this approach suffers from the same issues as the previous method with the additional problem of Sphinx crapping out on file and custom fields. So anyway, this is my solution. It uses the Sphinx docstring processing callback to intercept any objects that inherit from django.models.Model and creates a nice param list of all the fields on that model. Param descriptions come from the field's help text or verbose name if no help text is defined. To use this, just add it to the end of your source/conf.py, filling out the project path as appropriate. You may be able to skip the Django environment setup lines if you're adding this to a Sphinx doc that already has Django models set up.

  • sphinx
  • introspection
  • documentation
  • docs
  • autodoc
Read More

Use email addresses for user name for django 1.3

[Chris' code](http://djangosnippets.org/snippets/1845/) adapted to django 1.3. Basicly E-mail authorisation backend. Put it as one of your AUTHENTICATION_BACKENDS in settings.py: AUTHENTICATION_BACKENDS = ( 'community.auth.EmailBackend', )

  • email
  • auth
  • backend
  • authorisation
Read More

Advanced Search in django admin

This is an example on how to create a custom advanced search (like the google advanced search page) in the admin app instead of the basic search field. you need to override 2 template of the admin so in your templates/admin folder copy the html files from the original admin app as follow: change_list.html: add the name of the module of the templatetag at the top where there is the load command from: {% load adminmedia admin_list i18n %} to: {% load adminmedia admin_list custom_search_form i18n %} and on line 87 (circa) you need to load our custom template tag something like: {% block search %}{% advanced_search_form cl %}{% endblock %} search_form.html: put your form inside the <form> tags with {{asf}} should be enough (I have also removed cl.value from the input text field because would be to complex to reload form values too ) probably would be better to create 2 new clean template and extend them but I'll leave that as an exercise for the reader :) many thanks to [Peter Baumgartner to get me in the right direction after his post](http://lincolnloop.com/blog/2011/jan/11/custom-filters-django-admin/) Currently ordering in the admin panel doesn't work if you find a way to get it work please write a comment

  • admin
  • advanced-search
  • model-filtering
Read More

Detailed Error Reporting by Email

The default traceback sent by email when an error occurs, usually gives too little information comparing it to the error page in the DEBUG mode. This snippet guerilla-patches error handling and sends by email the same information as you would see in DEBUG mode. To set it up, add the snippet to any `models.py` of an installed app. (I wonder why this hasn't been implemented in the core)

  • email
  • error
  • reporting
Read More

ResizeImageField

ResizeImageField ================ (extension of RemovableImageField) ================================= by Wim Feijen, Go2People. What does it do? ---------------- ResizeImageField is a replacement for django's ImageField. It has two major benefits: 1. Creation of thumbnails and scaled images. 1. Extends the image upload form and adds a preview and a checkbox to remove the existing image. It's easy to use: - Replace ImageField by ResizeImageField - No further changes are necessary Requirements: ------------- Working installation of PIL, the Python Imaging Library Usage ----- - add resize_image to your app - add resize_filters.py to your templatetags - in settings.py, set a PHOTO_DIR, f.e. photos/original - in models.py, add: - from settings import PHOTO_DIR - from resize_image import ResizeImageField - photo = ResizeImageField(upload_to=PHOTO_DIR, blank=True) Scaled images will be stored in 'photos/scaled', thumbnails will be stored in 'photos/thumb'. Access your images from your template. Add:: {% load resize_filters %} {{ address.photo.url|thumb }} or:: {{ address.photo.url|scaled }} Defaults ------- - Scaled images are max. 200x200 pixels by default - Thumbnails are 50x50 pixels. Override the default behaviour in settings.py Scaling is done by PIL's thumbnail function, transparency is conserved. Credits ------ This code is an adaptation from python snippet 636 by tomZ: "Updated Filefield / ImageField with a delete checkbox"

  • image
  • thumbnail
  • resize
  • scale
  • delete
  • ImageField
  • ResizeImageField
  • removable
Read More
Author: wim
  • 5
  • 5

Drag and drop ordering of admin list elements using jQuery UI

Adds drag-and-drop ordering of rows in the admin list view. The only requirements is that the model has a field holding the position and that the field is made list_editable in the ModelAdmin. The changes of the ordering are applied after clicking 'Save'. The included javascript uses [jQuery UI's sortable](http://jqueryui.com/demos/sortable/) plugin Inspired by snippets [#1053](http://djangosnippets.org/snippets/1053) and [#998](http://djangosnippets.org/snippets/998/). Another similar snippet using AJAX is [#2047](http://djangosnippets.org/snippets/2047/).

  • admin
  • sort
  • jquery
  • order
  • sortable
Read More

Template Tag Render Decorator

I often find myself needing to create a template tag and all I'm interested in is the token and the render function. This decorator abstracts away the boilerplate code around creating the template node class which is the same each and every time.

  • template
  • tag
  • decorator
Read More

Model Hooks

Runs model methods on save, create, update, delete Similar to Rails hooks **Usage:** *in models.py* from myproject.hooks import connect_hooks class MyModel(models.Model): #... # only on first save of a newly created object def before_create(self): print self def after_create(self): print self # not on first save of a newly created object def before_update(self): print self def after_update(self): print self # any save, new object or update def before_save(self): print self def after_save(self): print self # delete, self is still available after delete def before_delete(self): print self def after_delete(self): print self **connect_hooks(MyModel)**

  • model
  • hooks
Read More

Base64Field: base64 encoding field for storing binary data in Django TextFields

This Base64Field class can be used as an alternative to a BlobField, which is not supported by Django out of the box. The base64 encoded data can be accessed by appending _base64 to the field name. This is especially handy when using this field for sending eMails with attachment which need to be base64 encoded anyways. **Example use:** class Foo(models.Model): data = Base64Field() foo = Foo() foo.data = 'Hello world!' print foo.data # will 'Hello world!' print foo.data_base64 # will print 'SGVsbG8gd29ybGQh\n'

  • django
  • model
  • field
  • base64
  • blob
  • base64field
Read More

FeaturedModelChoiceField

Here is a way to get a drop down list from a queryset, with a list of "featured" items appearing at the top (from another queryset). This can be used for long select boxes which have a subset of commonly used values. The empty label is used as a separator and values can appear in both the featured set and the full set (it's more usable if they are in both). For example a country drop down list with 5 featured countries might look like this: Andorra Australia Kazakhstan Singapore Turkey ------------ Afghanistan Albania Algeria American Samoa Andorra Angola (hundreds more) To use this, define your form field like this: country = FeaturedModelChoiceField(queryset=Country.objects.all(), featured_queryset=Country.objects.featured())

  • fields
  • forms
Read More

Print Exceptions to the Console

Put this in an __init__.py somewhere that will be executed on initialization and all errors will be printed out to stderr. Useful for debugging Facebook apps, javascript calls, etc.

  • print
  • console
  • exception
  • signal
Read More

More information about users and groups in user admin

Based on [this snippet](http://www.djangosnippets.org/snippets/876/). More clean, with links to the related admin forms. 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 utils/admin_auth.py

  • admin
  • customization
  • users
  • groups
  • roles
Read More