FileField having auto upload_to path
FileField having auto upload_to path
- django-models
Snippet List
LazyPrimaryKeyRelatedField
When you change dynamicaly the objects manager on your Model class, you may want to have serializers take it into account.
- DRF
- PrimaryKeyRelatedField
CacheInDictManager
This manager use a local (in python dicts) cache for efficiency. It caches get requests and is better used with a context manager. I based my work on this previous snippet : https://djangosnippets.org/snippets/815/
- caching
- Django Manager
MYSQL Full Text Expression
MYSQL Full Text Expression
- ORM
- FullText
- Mysql
Custom model manager chaining (Python 3 re-write)
This is a Python 3 re-write for https://djangosnippets.org/snippets/2117/
- manager
- queryset
- factory
Django Standard API Response Middleware for DRF for modern frontend easy usage
I'm typescript frontend developer and i was interested in standartizing API server responses. I've tried Django for one of my projects. I've build my API and splited it into Django apps aiming at possible migration to [link >] [Microservices](https://www.youtube.com/watch?v=0iB5IPoTDts) [<] later. The problem I've faced is a difficulty of standartization API responses not only in multiple views, but for all composition of JSON-oriented django-apps which can only be made with middleware. I have put all the links to everybody could familiarize with Django framework conceptions used here. Also, I suggest to familiarize with [link >] [origin solution] (https://djangosnippets.org/snippets/10717/) [<]. The main difference is that in all my DRF JSONRenderers I do not need to wrap fields in 'result' or 'results' nested JSON. I do not get messed with result and results. If I expect an array, I just check additional pagination fields. I did not used a pagination section in my project, still i've left opportunities for that according to [link >] [origin solution] (https://djangosnippets.org/snippets/10717/) [<. Ypu can also find a paginator code fro DRF there.
- Django
- DRF
- Standartization
- Middlewares
- Microservices
EnhancedQuerySet
A proxy for Django queryset attempting to avoid boilerplate code with ifs and avoid bugs when affectation of result is not done.
- django query set
- IGNORE_FILTER
Work around for negation of Q filter
It may save you some time if you're in the case of this link : https://stackoverflow.com/questions/11801363/django-q-with-joins-functioning-incorrectly-bug It worked for me at least.
- negation
- Q filter
A wrapper around cache_page making it optional
Make `cache_page` optional, depending on the result of a callable. Uncomment the added lines if you want to make sure that the consumers don't know the page is cached – that means more hits on your end, but also a guarantee that they will always get the newest data asap.
- cache
- caching
- cache_page
Treat empty value on DateRangeFilter as a filter for non filled dates
Useful for models with fields like `finished` or `last_updated`
- django-filter
Django Settings Assignment Expressions aka Walrus Operator example
Python 3.8's Assignment Expressions, aka the Walrus operator, feel like an excellent pattern for checking optional environment variables that are only needed to initialize a library like Sentry.
- settings
codigo alto nivel
es solo un ejemplo
Load template from specific app
This is an updated of version snippets: * [https://djangosnippets.org/snippets/10489/](https://djangosnippets.org/snippets/10489/) * [https://djangosnippets.org/snippets/1376/](https://djangosnippets.org/snippets/10489/) Tested to with with Django 3.2 With this template loader you can extend templates from built-in Django apps such as Django admin. Example: {% extends "admin:admin/index.html" %} {% block sidebar %} {{block.super}} <div> < h1>Statistics< /h1> < a href="/admin/station/stats/">Published Stations< /a> </div> {% endblock %} Configuration: TEMPLATES = [ { 'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [ 'your_app/templates' ], 'OPTIONS': { # (...) # See: https://docs.djangoproject.com/en/3.2/ref/templates/api/#django.template.loaders.cached.Loader 'loaders': [ ('django.template.loaders.cached.Loader', [ 'django.template.loaders.filesystem.Loader', 'django.template.loaders.app_directories.Loader', 'your_app.template_loaders.SpecificAppTemplateLoader', ]), ], }, }, ]
- template-loader
PostgreSQL JSON subqueries
#### Allows to fetch a row or array of rows of data, linked to parent object, in a single query. Data is fetched as JSON and is not serialized into Django objects. ##### Example: from django.db import Models class Book(models.Model): authors = models.ManyToMany('Author', through='BookToAuthor', blank=True) title = models.CharField(max_length=512, default='') class Author(models.Model): name = models.CharField(max_length=512, default='') class BookToAuthor(models.Model): author = models.ForeignKey(Author, on_delete=models.CASCADE) book = models.ForeignKey(Book, on_delete=models.CASCADE) ##### Download author with all his/her books in a single query from django.db.models import OuterRef books_by_author_subquery = Book.objects.filter( id__in=BookToAuthor.objects.filter(author_id=OuterRef(OuterRef('id'))) ).values('title') author = Author.objects\ .annotate(books=SubqueryJsonAgg(books_by_author_subquery))\ .get(id=1)
- json
- postgres
- postgresql
- subquery
"Magic Link" Management Command
Django Management Command to print a "Magic Link" for one-click log-in. This is nice for people who project switch or don't want to remember passwords.
- authentication
- magic
- management
- command
3109 snippets posted so far.