Sample Django/AngularJS2 code to handle POST call to Django REST Framework

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Description of requirements/features: I have a Django REST Framework that needs to respond to POST and GET API calls from an Angular2 app. I need someone who is expert in Django REST Framework to create a small piece of sample code that does the following:

1) Examines the POST data and checks that the POSTed 'title' is all alphanumeric characters.
2) Responds to the API caller "{success: 'True', title: title}" if the validation was successful and the data record has been successfully created by Django REST Framework.
3) Respond to the API caller with "{success: 'False', reason: 'Title is not all alphanumeric'}" if the POSTed 'title' data failed the validation test. And aborts creating the new record.
4) The code must also make sure that the response to the API call reports other reasons for failure. For example the model requires that the 'title' field is unique. So the response to the API caller must make it clear why the record was not created if it was a duplicate.

The view your create MUST be called: class ItemViewSet(viewsets.ModelViewSet)

The serializer MUST be called: class ItemSerializer(serializers.HyperlinkedModelSerializer)

The model to be used is called: Item

The urlconf is as follows:

router = routers.DefaultRouter()
router.register(r'items', itemViews.ItemViewSet)

urlpatterns = [
url(r'^api/', include(router.urls)),
url(r'^grappelli/', include('grappelli.urls')), # grappelli URLS
url(r'^admin/', admin.site.urls),
]
Extra notes: