¿Cómo se filtra el serializador anidado?

How do you filter nested serializer?

all() on the nested queryset. So you effectively need to make data = data. filter(**your_filters) before the method is called. Then you need to add your subclassed ListSerializer as the list_serializer_class on the meta of the nested serializer.

The simplest way to filter the queryset of any view that subclasses GenericAPIView is to override the . get_queryset() method. Overriding this method allows you to customize the queryset returned by the view in a number of different ways.

Serializers in Django REST Framework are responsible for converting objects into data types understandable by javascript and front-end frameworks. Serializers also provide deserialization, allowing parsed data to be converted back into complex types, after first validating the incoming data.

search_fields specify the database columns against which the pattern needs to be matched. DRF default behavior works with static search_fields ….Set search fields using the query parameter

1. Setting search_fields in the class.
2. Setting filter_backends in the class.
3. Sending search query parameter in the request.

Django-filter is a generic, reusable application to alleviate writing some of the more mundane bits of view code. Specifically, it allows users to filter down a queryset based on a model’s fields, displaying the form to let them do this.

The DjangoFilterBackend class is used to filter the queryset based on a specified set of fields. This backend class automatically creates a FilterSet (django_filters. rest_framework. To configure filter backend classes in our Django Web Service, we need to install the django-filter package in our virtual environment.

A QuerySet represents a collection of objects from your database. It can have zero, one or many filters. Filters narrow down the query results based on the given parameters. In SQL terms, a QuerySet equates to a SELECT statement, and a filter is a limiting clause such as WHERE or LIMIT .

Django REST framework is a powerful and flexible toolkit for building Web APIs. Some reasons you might want to use REST framework: The Web browsable API is a huge usability win for your developers. Authentication policies including packages for OAuth1a and OAuth2.

Django-crispy-forms is an application that helps to manage Django forms. It allows adjusting forms’ properties (such as method, send button or CSS classes) on the backend without having to re-write them in the template.

Getting Started

1. Inside your Django app directory, create a module called templatetags and add an empty __init__.py file as shown in the below directory structure.
2. Next, open the custom_tags.py file and add these two lines to get started with custom template tags and filters.

A mapping of Django model fields to REST framework serializer fields. You can override this mapping to alter the default serializer fields that should be used for each model field. This property should be the serializer field class, that is used for relational fields by default. For ModelSerializer this defaults to PrimaryKeyRelatedField.

It works very similar to DRF serializers and fields in a sense that they can be nested except they are called filtersets and filters. That provides easy way to filter related data. Also this library is generic-purpose so it can be used to filter other sources of data and not only Django QuerySet s.

Serializers also provide deserialization, allowing parsed data to be converted back into complex types, after first validating the incoming data. The serializers in REST framework work very similarly to Django’s Form and ModelForm classes.

FlexFields (DRF-FF) for Django REST Framework is a package designed to provide a common baseline of functionality for dynamically setting fields and nested models within DRF serializers. This package is designed for simplicity, with minimal magic and entanglement with DRF’s foundational classes.