Helpers to extend Django Admin with data from external service with minimal hacks

Overview

django-admin-data-from-external-service

Helpers to extend Django Admin with data from external service with minimal hacks

Live demo with sources on Heroku free quota (please be patient, it will take some time for the app to wake up)

Main features:

  • reuse Django Admin layout to simplify customization of viewing and managing external data (list/view/filter+search/ordering)
  • datasource agnostic
  • django2.x and django3.x support

How it works

Used custom ChangeList to determine method to pull external data and mock paginator behaviour.

Example

, "items": }` def get_list(self, request, page_num, list_per_page): # 2.1 pull data from some service, where # search = request.GET.get('q') # order_by = request.GET.get('o') # some_list_filter = request.GET.get('some_list_filter') data = { 'total': 1, 'users': [ {'id': 1, 'username': 'User1'}, ] } # 2.2 map data to model instances items = [ExternalUser(**i) for i in data.get("users") or []] return { "total": data.get("total") or 0, "items": items, } # 3. other standart django admin customization def get_object(self, request, object_id, *args, **kwargs): # 3.1 fetch object from external service user = {'id': 1, 'username': 'User1'}, # 3.2 map data to model instance return ExternalUser(**user) admin.site.register(ExternalUser, ExternalUserAdmin) ">
from django.db import models
from django.contrib import admin

from dadfes.admin import DfesAdminModelMixin


# Declare model for external data (managed: false)
class ExternalUser(models.Model):
    id = models.IntegerField("Id", primary_key=True)
    username = models.TextField("Username")

    class Meta:
        managed = False
        verbose_name = "External User Model"


# 1. mixin DfesAdminModelMixin
class ExternalUserAdmin(DfesAdminModelMixin, admin.ModelAdmin):
    list_display = (
        "id",
        "username",
    )

    # 2. and implement get_list method with returning
    # `{"total": 
    
     , "items": 
     
      }`
     
    
    def get_list(self, request, page_num, list_per_page):

        # 2.1 pull data from some service, where
        #   search = request.GET.get('q')
        #   order_by = request.GET.get('o')
        #   some_list_filter = request.GET.get('some_list_filter')
        data =  {
            'total': 1,
            'users': [
                {'id': 1, 'username': 'User1'},
            ]
        }

        # 2.2 map data to model instances
        items = [ExternalUser(**i) for i in data.get("users") or []]

        return {
            "total": data.get("total") or 0,
            "items": items,
        }

    # 3. other standart django admin customization
    def get_object(self, request, object_id, *args, **kwargs):
        # 3.1 fetch object from external service
        user = {'id': 1, 'username': 'User1'},
        # 3.2 map data to model instance
        return ExternalUser(**user)

admin.site.register(ExternalUser, ExternalUserAdmin)

License

This project is licensed under

Owner
Evgeniy Tatarkin
Evgeniy Tatarkin
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