Craft GraphQL APIs in Elixir with Absinthe

Subscription Triggers

In the previous section, we only used a single hard-coded topic value, but when we start thinking about tracking the life cycle of a particular entity, we need to pay a lot more attention to how we’re setting up our subscriptions and how we’re triggering them. The challenge isn’t just keeping track of how the topics are constructed; it can also be hard to make sense of where in your code base publish/3 calls may be happening. We’re going to explore an alternative approach to trigger mutations as we expand on the order-tracking capabilities of the PlateSlate system.

Everything that has a beginning has an end, and for the hungry customer, orders are fortunately no exception. We need to complete the life cycle of an order ...