FieldField Auto delete file on change or delete
FileField delete file on delete or update
- field
- File
Snippet List
Django numberize templatetags
Templatetags function to convert the number into numberize method. It usefull to numberize the visitors, users, or other cases.
- django
- templatetags
parse json string
function to parse the string text into json format
- django
- json
- templatetags
- utils
- parser
Check If a Field Has Changed
Used to check if a field of an object has changed. This is probably most useful in the save method.
- save
- field
- change
- check
update primary key (cascade to child tables and inherited models) - Django 1.11
An upgrade to the excellent snippet by variant at https://djangosnippets.org/snippets/2915/ Upgraded to work with Django 1.11.
- primary_key
URLMan serializer field for Django Rest Framework (DRF)
This snippet shows how to add a `url` field to your API objects, which will then show up as an object in your JSON output. As parameters, you can specify: - `urls`: A list of strings that exist on your URLMan class - `attribute`: The name of the URLMan class on your model, defaults to `"urls"` - `full`: If the full URLs including schema and hostname should be supplied, defaults to `True`
- django-rest-framework
- urlman
Strict Boolean Form Field
A form field for a Boolean that forces the user to make a choice from a list of choices. **Use Case** You have a Yes/No question the user must answer, but they may answer it yes or no. You don't want to supply a default because your need to force the user to actively select their answer. If they do not select an answer, the field should raise a validation error, like "This field is required". Normal BooleanField logic is based on a "checkbox", which, when "required" is required to be checked. This logic assumes that an empty value is the same as False -- in fact, there is no way for validators to distinguish between the empty value and False. Based on excellent suggestion from Peter DeGlopper: https://stackoverflow.com/a/56677670/1993525
- form_field
Yet another query string template tag
This one works works with or without query string dicts defined in the context. And it handles replacement, addition and removal of values for parameters with multiple values. Usage: {% url view %}{% query_string qs tag+tags month=m %} where `view`, `qs` (dict), `tags` (list of strings) and `m` (number) are defined in the context. Full detail in the doc string.
- url
- template-tag
- query-string
Geoip middleware to restrict users to a set of allowed countries
This middleware uses Django's Geoip support (https://docs.djangoproject.com/fr/2.2/ref/contrib/gis/geoip2/), as well as axes's package helper to retrieve IP address (since Django's REMOTE_ADDR might be wrong when behind a reverse proxy). Ensure your geolite DB files are up to date (eg. with https://djangosnippets.org/snippets/10674/). The checker is optional, but ensures that security is not broken due to a misspelled/missing GEOIP_COUNTRY_WHITELIST.
- middleware
- ip
- country
- geoip
- restriction
- blocker
Django management command to update local Maxmind Geoip databases
This management command updates country and city Geolite databases from Maxmind (binary databases, not CSV ones), for use with Django's builtin Geoip utilities.
- maxmind
- management
- databases
- geoip
- python3
spaceless_json
Now you can format and compress json-data in django template
- django
- templatetag
- json
- spaceless
- formatting
- application/id+json
Choice Field and Select Widget With Optional Optgroups
Renders an select field with some optgroups. Some options can be outside the optgroup(s). The options and labels should be in a tuple with ((label, choices),) where choices is a tuple ((key, value), (key2, value2)). If a label is null or blank, the options will not belong to an opt group.
- newforms
- widgets
- select
- optgroup
- option
Active link
I needed a way to find if a menu items should be active. After searching the internet i found a few options*, but none of them did fit my needs, so i wrote my own: Usage: <a href="{% url 'view-name' %}" class="{% current request 'view-name' %}"></a> * http://gnuvince.wordpress.com/2008/03/19/the-new-and-improved-active-tag/ * http://stackoverflow.com/questions/340888/navigation-in-django
- template
- path
- active
- link
- current
A couple of template filters for partitioning lists
People -- and by "people" I mean Jeff Croft -- often ask about how to split a list into multiple lists (usually for presenting as columns in a template). These template tags provide two different ways of splitting lists -- on "vertically", and the other "horizontally".
- template
- filter
- lists
WTForm (What The Form)
WTForm is an extension to the django newforms library allowing the developer, in a very flexible way, to layout the form fields using fieldsets and columns WTForm was built with the well-documented [YUI Grid CSS](http://developer.yahoo.com/yui/grids/) in mind when rendering the columns and fields. This should make it easy to implement WTForm in your own applications. Here is an image of an [example form rendered with WTForm](http://www.gmta.info/files/wtform.png).
- newforms
- html
- css
- fieldset
- form
- yui
- rendering
- grid
- columns
- layout