Better Django Model Field Choices
Nice to name your constant multiple choice fields in models, this is one way of doing that. Sorry I haven't looked into existing alternatives. But this approach worked for me.
- choice
- choices
- model
- field
Snippet List
Get default form data
Given an unbound form, determine what data would be generated from POSTing the form unchanged. The goal is to end up with a dict such that, passed into another form constructor as its data kwarg, form.changed_data == [].
- forms
- widgets
Simple "html email with images" sender
This will take your Django template and will search for images in <table> and <img> tags, and will replace it with attached files in the email to send. You can use it without a template param.
- images
- attach
- htmlmail
- send_html_mail
shuffle templatetag
This is useful for randomizing an iterable of objects in place in a django template. Usage: {% load shuffle %} {# now some_list is ordered #} {% shuffle some_list %} {# now some_list is randomized #}
- template-tag
- iterable
- shuffle
Admin action for a generic "CSV Export"
Based on [#2020](/snippets/2020/) Save the snippet as actions.py within your django app, and then add an action on any model you want in it's ModelAdmin definition. Example usage: from actions import export_as_csv_action class YourModelAdmin(admin.ModelAdmin): list_display = (...) list_filter = [...] actions = [export_as_csv_action("CSV Export", fields=[...])] * - Added UTF-8 encoding support * - Bugs fixed
- admin
- export
- csv
- action
Keep Me Logged In for Django
Very simple middleware to implement "remember me" functionality. Updates the session once per day to keep user logged.
- django
- session
- keep
- logged
- middlware
Better debugging mail server
Python includes (and [Django recommends](http://docs.djangoproject.com/en/dev/topics/email/?from=olddocs#testing-e-mail-sending)) a simple email debugging server which prints mail to stdout. The trouble is, unlike any half-competent mail reader, long lines are broken up, and thus long URLs don't work without modification. This snippet simply unwraps long lines (broken by "=") so long URLs can be easily copied/pasted from the terminal. Save this snippet into a file named "better.py" and execute it.
- debuggingserver
- long-lines
restrict user access to modeladmin via metaclass
* Include `__metaclass__ = user_lock` to your ModelAdmin class * Add `__target__ = path_to_user_field` somewhere in the ModelAdmin * done! `__target__` is what will be used in the `filter` call. examples `'user'` or `'author'` or `'message__user'` e.t.c. The result of `__target__` is the field that is then checked against `request.user`
- admin
- user
- restrict
- model-admin
currency filter without using locale
This snippet is a combination of the existing currency snippets I found and some modifications to use your own settings without the need to have the locale installed on the system. You can define in settings.py: DECIMAL_SEPARATOR = ',' THOUSAND_SEPARATOR = '.' CURRENCY_SYMBOL = u'€' With the above settings, using `{{ 1234.30|currency }}` on a template would result in `€1.234,30`
- template
- filter
- currency
Custom model field for Frame or Box
**Purpose** We often need to store x,y, width and height for a model, we can store all these values in same field by having custom field. **How to Use** Save this code in *customfields.py* and in your model >*from customfields import FrameField* >*class MyModel(models,Model)* >* frame = FrameField()* And in your in views, you can use as follows >*model = MyModel.objects.get(1)* >*print model.frame.x, model.frame.y, model.frame.width, model.frame.height*
- field
- custom-model-field
- frame
KMLMiddleware
This is a slight modification from the original version at [http://djangosnippets.org/snippets/709/](http://djangosnippets.org/snippets/709/) and is a middleware designed to output the right headers for generated KML or KMZ content. In the case of KMZ content, it handles the compression of the original KML content into the KMZ format. This version applies the processing to only requests ending with a .kml or .kmz in the URL. For instance, a request with the URL **http://example.com/kml/foo.kml** or **http://example.com/foo.kmz** will get processed by this middleware.
- google-maps
- kml
- kmz
- google-earth
Bulk Insert Manager
This is a small manager that just adds a "bulk_insert" function. This is very basic, I'm basically throwing it up here because it's simple and works for my current needs. Feedback on improvements (which I know would be a ton) are very welcome. Some known "gotchas": 1. This doesn't handle relationships. If, however, you want to do one-to-one or foreignkeys you'll have to use the actual table column name ('whatever_id' typically) 2. When using this I typically make a bulk_insert call every 500 iterations or so Some improvements that I think could be good: 1. Possibly just find the fields from the first object in the objs array and leave the fields argument as optional 2. Create a bulk_insert_from_file function and use LOAD DATA INFILE for mysql and whatever else supports it
- manager
- bulk
- insert
- bulk-insert
Group sequence into rows and columns for a TABLE
Two template tag filters that can be used to create a table from a sequence. <table> {% for row in object_list|groupby_columns:3 %} <tr> {% for obj in row %} <td>{{ obj }}</td> {% endfor %} </tr> {% endfor %} </table> The example above would create a table where items read from top to bottom, left to right, in 3 columns. "Empty" cells are added to the sequence by the filter so that your rows balance.
- filter
- templatetag
- table
- groupby
Django 1.2 template tag {% IF %} with {% ELIF %} support
Adds to Django 1.2 tag `{% elif %}` {% if user.nick == "guest" %} Hello guest! {% elif user.nick == "admin" or user.is_admin %} Hello admin! {% elif user %} You are registered user {% else %} Login to site {% endif %} Snipped designed for [gaeframework.com](http://www.gaeframework.com) Inspired by snippets: [#1572](http://djangosnippets.org/snippets/1572/) and [#2243](http://djangosnippets.org/snippets/2243/)
- template
- if
- elif
- django 1.2
- tags. tag
Custom filename example with sorl-thumbnail
usage :- put it in python path and refer to it from settings.py `THUMBNAIL_BACKEND = 'full.import.path.to.SEOThumbnailBackend'` Took me a bit to figure it out since i couldn't find an existing example code for it.
- sorl-thumbnail