Taking you API to the next level Django Rest Framework $whoami - - PowerPoint PPT Presentation

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taking you api to the next level django rest framework
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Taking you API to the next level Django Rest Framework $whoami - - PowerPoint PPT Presentation

Mar 17, 2023 287 likes •950 views

Taking you API to the next level Django Rest Framework $whoami Carlos Martnez Backend Developer en twitter @carlosmart626 github carlosmart626 https://carlosmart.co $whoami Colombia @carlosmart626 $whoami @carlosmart626 5

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Taking you API to the next level

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Django Rest Framework

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Carlos Martínez 

Backend Developer en twitter @carlosmart626 github carlosmart626 https://carlosmart.co

$whoami

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$whoami

Colombia 

@carlosmart626

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$whoami

@carlosmart626

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5 Minute API

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Ticket Store

Users Events Promotors Tickets

@carlosmart626

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Display different data based on context Getting better performance Filtering information Permissions How to render results in different formats?

@carlosmart626

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Reuse Serializers

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How to reuse your serializers to show different representations?

Create multiple ModelSerializer with different selected fields

@carlosmart626

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How to reuse your serializers to show different representations?

DynamicSerializers!

@carlosmart626

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Dynamic Serializers

Use DynamicSerializer instead ModelSerializer

@carlosmart626

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Dynamic Serializers

Use DynamicSerializer instead ModelSerializer

@carlosmart626

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Dynamic Serializers

@carlosmart626

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Dynamic Serializers

Now you can reuse the serializer easier

@carlosmart626

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Getting better performance

@carlosmart626

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Prefetch

Keep in mind the number of queries

@carlosmart626

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Prefetch

Select Related

Follow foreign key relationships by getting a single but more complex query

@carlosmart626

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Prefetch

django/querysets/#select-related

@carlosmart626

Select Related

Follow foreign key relationships by getting a single but more complex query

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Prefetch

@carlosmart626

Select Related

Follow foreign key relationships by getting a single but more complex query

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Prefetch

Query

@carlosmart626

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Prefetch

Query

@carlosmart626

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Prefetch

Prefetch Related

Great to many-to-many and many-to-one

@carlosmart626

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Prefetch

@carlosmart626

Prefetch Related

Similar to ‘select_related’ creates a more queries executed to get the related data

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Prefetch

@carlosmart626

Prefetch Related

Similar to ‘select_related’ creates a more queries executed to get the related data

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Prefetch

Prefetch Object

This object can be used to customize the ‘prefetch_related’ operations

django/querysets/#prefetch-objects

@carlosmart626

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Prefetch

Prefetch Object

This object can be used to customize the ‘prefetch_related’ operations

django/querysets/#prefetch-objects

@carlosmart626

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Filtering

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django-url-filter

Let’s filter your endpoints in a better way

@carlosmart626

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Add filter_backends and select your filter fields

django-url-filter

@carlosmart626

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Add filter_backends and select your filter fields

django-url-filter

@carlosmart626

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django-url-filter

@carlosmart626

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ModelFilterSet

django-url-filter

@carlosmart626

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Cache

@carlosmart626

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Django Cache in DRF ModelViewSets

View example

Cache

@carlosmart626

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Django Cache in DRF ModelViewSets

View example

Cache

@carlosmart626

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Django Cache in DRF ModelViewSets

View example

Cache

@carlosmart626

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DON’T FORGET TO INVALIDATE CACHE

Key invalidation

Cache

@carlosmart626

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django-cacheops

Cacheops let’s you cache the ORM

@carlosmart626

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django-cacheops

Cacheops can work using redis

@carlosmart626

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django-cacheops

Cacheops common configurations

Default time out Apps/Models to cache with operations and time settings

@carlosmart626

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django-cacheops

Cacheops common configurations

Default time out Apps/Models to cache with operations and time settings

@carlosmart626

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django-cacheops

Cacheops provides different ways to cache ORM operations

It’s automatic! But, you can define a queryset and append cache() at the end to cache the ORM results.

https://github.com/Suor/django-cacheops

@carlosmart626

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django-cacheops

Cacheops provides different ways to cache ORM operations

It’s automatic! But, you can define a queryset and append cache() at the end to cache the ORM results.

https://github.com/Suor/django-cacheops

@carlosmart626

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Permissions

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Permissions

DRYPermissions

You can define global,

  • bject and action

permissions in each one

  • f your models.

@carlosmart626

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DRYPermissions

@carlosmart626

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DRYPermissions

Using DRYPermission in a ViewSet

Add to permission_classes DRYPermissions

@carlosmart626

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DRYPermissions

Using DRYPermission in a ViewSet

Add to permission_classes DRYPermissions

@carlosmart626

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DRYPermissions

Global Permissions

You have access to the request so you can get information about the user

@carlosmart626

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DRYPermissions

Object Permissions

You can define object permissions and you get both request and the object to make validations

@carlosmart626

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DRYPermissions

Field/Action Permissions

You can define logic to access to fields and actions within a model viewset

@carlosmart626

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DRYPermissions

Custom permission class

@carlosmart626

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DRYPermissions

Custom permission class

@carlosmart626

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DRYPermissions

Custom permission class

@carlosmart626

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DRYPermissions

DRYPermission on APIView

Outside a Viewset you need to add to the serializer a context

https://github.com/dbkaplan/dry-rest-permissions

@carlosmart626

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DRYPermissions

DRYPermission on APIView

Outside a Viewset you need to add to the serializer a context

https://github.com/dbkaplan/dry-rest-permissions

@carlosmart626

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Rederers

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XLSXRenderer

Drf-renderer-xlsx

This package let you export excel files directly from your api instead to get a son you can get a xlsx file with all the filters you already define at the URL

@carlosmart626

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XLSXRenderer

It’s very simple to use

@carlosmart626

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XLSXRenderer

It’s very simple to use

@carlosmart626

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Code

https://github.com/CarlosMart626/ djangocon-2019

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Demo 爛

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Thank you

@carlosmart626