AJAX

ajax_login_required

New in version 0.7.

djem.ajax.ajax_login_required(view_fn)

Simple decorator that returns HttpResponseForbidden if the user is not authenticated, and executes the decorated function if they are. Designed for use by views accessed with AJAX requests, where redirecting to the login view is not useful.

AjaxResponse

class djem.ajax.AjaxResponse(request, data=None, success=None, **kwargs)

An extension of Django’s JsonResponse, differing in the following ways:

• The data argument is optional. If provided, it must always be a dict instance. If not provided, a new dict instance will be created and used. Using the safe argument of JsonResponse to JSON-encode other types is not supported (see the documentation for the safe argument of JsonResponse).

• The first positional argument should be a Django HttpRequest instance, used to retrieve messages from the Django message framework store and add them to the data dictionary under the “messages” key. The messages are added as a list of dictionaries containing:

  • message: The message string.

  • tags: A string of the tags applied to the message, space separated.

• The optional argument success can be set to add a “success” key to the data dictionary. The “success” key will always be added as a boolean value, regardless of what was passed (though it will not be added at all if nothing was passed).

With the exception of safe, as noted above, AjaxResponse accepts and supports all arguments of JsonResponse.

To help prevent XSS vulnerabilities, the messages from the Django messages framework that are included in the response are automatically escaped. If a message should legitimately contain HTML, it can be marked as safe to prevent it being escaped.

See also

MessageMiddleware

A replacement for Django’s own MessageMiddleware that avoids simultaneous requests interfering with each other’s message stores - an issue made more likely when making use of AJAX.