Adding pagination features

Open the views.py file within the service folder and replace the code for the NotificationListResource.get method with the highlighted lines in the next listing. In addition, make sure that you add the highlighted import statement. The code file for the sample is included in the restful_python_2_03_01 folder, in the Flask01/service/views.py file:

from helpers import PaginationHelper 
 
 
class NotificationListResource(Resource): 
    def get(self):
        pagination_helper = PaginationHelper(
            request,
            query=Notification.query,
            resource_for_url='service.notificationlistresource',
            key_name='results',
            schema=notification_schema)
        pagination_result = pagination_helper.paginate_query()
        return pagination_result

The new code for the get method creates an instance of the previously explained PaginationHelper class named pagination_helper with the request object as the first argument. The named arguments...