EdX has created a framework that manages order placement and fulfillment for digital products. Most of the products that edX supports involve modifications to enrollments.
The edX framework allows modules that fulfill enrollment-related products to interact with the edX Enrollment API, which is a part of the LMS. This process can be either synchronous or asynchronous.
To place an order, you need the following information.
To place an order, use the
handle_order_placement() method that
EdxOrderPlacementMixin provides. If you modify this code, make sure that
the code collects payment before it creates order objects.
To fulfill orders, emit a
post_checkout signal. An internal fulfillment API
then delegates fulfillment of individual order items to the appropriate
The E-Commerce base fulfillment module has the following interface.
ProductType has a corresponding module that extends this interface
and fulfills order items of that particular
ProductType. To fulfill an
order, the system gives each fulfillment module configured in settings
_oscar.py) an opportunity to fulfill order lines.
fulfill_product method fulfills the order. For example,
fulfill_product might enroll a learner in a course or upgrade the learner
to a verified certificate).
revoke_line method revokes a specific order line. For example,
revoke_line might unenroll learners from courses or downgrade a learner
from a verified seat.
If a fulfillment operation fails, the E-Commerce service assigns the order a status indicating the reason for the failure. If you have enabled asynchronous order fulfillment, the service tries again to fulfill the order. You can also manually retry fulfillment of a failed order from the Oscar order dashboard.