Resize or Modify an image before saving
Small snippet that will resize all images before they uploaded to the server.
- image
- pil
- resize
- save
- imagefield
- modified
- pre_save
- override
Snippet List
CSVField for forms
FileField that checks that the file is a valid CSV and if specified in `expected_fieldnames` checks that the fields match exactly. The widget's `accept` parameter is set to accept csv, text and excel files. **TODO**: Validate the entirety of the CSV file, not just the headers. But this should be enough for most use cases, as checking the whole file could be computationally expensive for huge files. Example usage: people = CSVField(expected_fieldnames=['First Name', 'Last Name'])
- forms
- csv
- field
A streamable "export to CSV" admin action
This snippets is inspired from [#2995](https://djangosnippets.org/snippets/2995/) but add the following: * get rid of `singledispatch` so we can use it with python2 without pip installing anything * streaming capabilities * the configuration params (header, fields, exclude...) are passed to the action function so we don't pollute the ModelAdmin class * fix utf8 issue in header
- admin
- export
- csv
- action
- stream
- export-csv
Django 1.10 Internationalization Middleware
Django 1.10 Internationalization Middleware, more complete tutorial: https://python.web.id/blog/how-to-implement-django-internationalization/
- internationalization
- middleware
Mixin to enable admin permissions without using PermissionsMixin and models
Implements necessary permission checks on a user model to be compatible with django admin, but just return true on all permissions without actually checking it against anything. Useful when you have a user model that should always be allowed to use django admin, and you don't care about using django's own PermissionsMixin and don't want to have those models added to your database.
- admin
- mixin
- permissions
Django Rest Framework LoginExemptPermission: Apply `IsAuthenticated` to all ViewSet actions except those specified as exempt of authentication
Say you want to keep your API secure and thus it has authentication, but there's this one View action in a ViewSet which unlike the rest of the ViewSet's actions needs to allow free access without authentication. This solution applies the good old `IsAuthenticated` permission to all ViewSet actions except those defined in a `login_exempt_actions` list. That's a list of the ViewSet action's names. This is a simple solution for this particular problem, which I imagine could be quite common. Any case where the requirements are more complex should implement one of the DRF permissions extensions which allow for the use of logical operators. **NOTE**: Remember that `request.user` will be an `AnonymousUser` instance, so be careful with any code which assumes it'll be a `User` instance. This could be the case with, say, a custom `get_queryset` implementation.
- authentication
- api
- django-rest-framework
Cachable Django Paginator
This is a modificated version of `CachedPaginator` by **daniellindsley** [https://djangosnippets.org/snippets/1173/](https://djangosnippets.org/snippets/1173/) ([web-arhive-link](https://web.archive.org/web/20150927100427/https://djangosnippets.org/snippets/1173/)). Which not only cache `result_objects`, but the `total_count` of the `queryset` too (usefull if computating the count is an expensive operation too).
- django
- cache
- pagination
Dead Code Finder
Rough check for unused methods in our apps. Scans models, views, utils, api, forms and signals files for what look like methods calls, then looks at all of our classes' methods to ensure each is called. Do not trust this blindly but it's a good way to get leads on what may be dead code. Assumes a setting called `LOCAL_APPS` so it only bothers to look at the code you've written rather than everything in `INSTALLED_APPS`.
- refactor
- cleanup
utf8-friendly dumpdata management command (no escape symbols) #4
The version of snippet that works with Django 1.9
- fixtures
- management
- dumpdata
utf8-friendly dumpdata management command for yaml (no escape symbols) #2
This is a revised version of https://djangosnippets.org/snippets/2921/
- loaddata
- fixtures
- management
- dumpdata
- serializer
Custom template filter remove words at end of a string
Filter to remove words at the end of a string Example: Myvar: "My name is Arthur and django si awesome" {{myvar|wordend:4}} Output: "My name is Arthur"
- string
- template filter
- remove words at end
Custom template filter remove words at beginning of a string
Filter to remove words at the beginning of a string Example: Myvar: "My name is Arthur and django si awesome" {{myvar|wordremoveb:5}} Output: "django is awesome"
- string
- template filter
- remove words
AvaliabilityAtDateListFilter
If your model have two dates, start and end of something, you may want to have filter which allow you to show objects which last on specific day.
- filter
- admin
- changelist
- list_filter
Django AJAX Form View
# Django AJAX Form View ### A simple example for an AJAX-powered view
- ajax
- view
- post
Dynamic Paginator Mixin
Dynamic Paginator Mixin for Django 1.8.* - 1.9.*, also work for CBV (Class Bassed View) but not for "django generic view".
- django
- pagination
- paginator
3110 snippets posted so far.