Hi, I'm wondering if someone can point me to documentation on how I can compose a flow-of-flows and map upstream flow results to parameters in downstream flows.

You would need to use the

get_task_run_result

task to fetch the result for the specific task?

I'm struggling a bit on the retrieval of individual task results from an upstream flow. Could you comment on how task_ref is defined in this example from the docs:

>>> state.result  # the public property aliases the same API as above
{<Task: add>: <Success: "Task run succeeded.">,
 <Task: add>: <Success: "Task run succeeded.">}
>>> state.result[task_ref]._result  # a Task State's Result contains the Task's return value
<Result: 1>

That is for using Core alone though. You don’t need that. You should just need to use

get_task_run_result

and then point that to the task slug of the upstream flow and you will get the result loaded in.

@Kevin Kho what if I'd like to access individual task results from that upstream flow?

get_task_run_result

points to the

return

of a specific task in a previous flow run. You can map over this task too if you provide all of the task-slugs.

Ah okay- seeing now... The examples in this doc might also be useful to reference in the flow of flows docs: https://docs.prefect.io/orchestration/flow-runs/task-runs.html#task

Ah I haven’t seen that page before haha