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pythondjangorestcrud
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Reputation: 237

UPDATE and DELETE Operation in Python Django REST

I am trying to implement simple CRUD operation in Django Rest. I have successfully created, GET and POST . Now, I want to update the row data with PUT and delete a row with DELETE.

Currently, my table looks like :-

id    item_1    item_2    item_3    date_created    date_modified

1     test1     test2     test3     16-12-2017      16-12-2017
2     ex1       ex2       ex3       16-12-2017      16-12-2017

API End point :- localhost/itemlist

If we GET localhost/itemlist it returns the list of items.

If we POST localhost/itemlist with fields item_1, item_2, item_3 , it creates the row.

Now, I want to use PUT to update a particular row. Like, if I want to update the value of item_3 where item_1 == "test1"

DELETE should delete the row where item_1 == ex1

urls.py 

from django.conf.urls import url, include
from rest_framework.urlpatterns import format_suffix_patterns
from .views import ItemView

urlpatterns = {
    url(r'^itemlists/$', ItemView.as_view(), name="create"),       
}

urlpatterns = format_suffix_patterns(urlpatterns)

views.py :

from rest_framework import generics
from .serializers import itemlistSerializer
from .models import itemlist   

class ItemView(generics.ListCreateAPIView):

    queryset = itemlist.objects.all()
    serializer_class = itemlistSerializer

    def perform_create(self, serializer):  
        serializer.save()

serializers.py 

from rest_framework import serializers
from .models import itemlist

class itemlistSerializer(serializers.ModelSerializer):

    class Meta:
        """Meta class to map serializer's fields with the model fields."""
        model = itemlist
        fields = ('id', 'item_1', 'item_2', 'item_3', 'date_created', 'date_modified')
        read_only_fields = ('date_created', 'date_modified')

models.py

from django.db import models

class itemlist(models.Model):
    """This class represents the itemlist model."""
    item_1 = models.CharField(max_length=255, blank=True, unique=False)
    item_2 = models.CharField(max_length=255, blank=True, unique=False)
    item_3 = models.CharField(max_length=255, blank=True, unique=False)

    date_created = models.DateTimeField(auto_now_add=True)
    date_modified = models.DateTimeField(auto_now=True)

    def __str__(self):
        """Return a human readable representation of the model instance."""
        return "{}".format(self.item_1)

Upvotes: 0

Views: 789

Answers (1)

Tobias Ernst
Tobias Ernst

Reputation: 4634

Use django viewsets:

viewsets.py

class ListItemViewSet(viewsets.ModelViewSet):
    serializer_class = itemlistSerializer
    queryset = itemlist.objects.all()
    http_method_names = ['get', 'post', 'put', 'delete', 'option']

    def get_queryset(self):
        request_user = self.request.user
        if not request_user.is_superuser:
            return self.queryset.filter(owner=request_user)

urls.py

router = routers.DefaultRouter()
router.register(listitem', ListItemViewSet)

urlpatterns = [
    url(r'^', include(router.urls)),
    url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')),
]

Then you should be able to send put and delete requests. This works for Django 1.9x.

Just one more thing: Please read the Python Style Guide. We normally use CamelCase for class names.

Upvotes: 1

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