How can I navigate to the child flow run from a parent flow?

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There is no straightforward way to do it in Prefect 1.0.

Possible solutions in Prefect 1.0

  1. One way to navigate to a child flow run is through logs: within your parent flow run logs, you should see something like this:
Flow run created: https://cloud.prefect.io/anna-prefect/flow-run/d3f27dd8-1e5e-40af-94cf-46766ef080f3

You can copy this URL and navigate it in your browser to see the flow run page of the child flow.

  1. You may also add stream_logs=True to wait_for_flow_run to see child flow run logs directly in the parent flow run logs.
from prefect import Flow
from prefect.tasks.prefect import create_flow_run, wait_for_flow_run

with Flow("parent_flow") as flow:
    child_flow_run_id = create_flow_run(
        flow_name="child_flow_name", run_name="custom_run_name"
    )
    child_flowrunview = wait_for_flow_run(
        child_flow_run_id, raise_final_state=True, stream_logs=True
    )

But note that this is not available in the StartFlowRun task. For more, see How can I create a subflow and block until it’s completed?

Orion

Orion provides a first-class way to navigate between parent and child flow runs. If you are interested to learn more, check out this livestream recording: Livestream - Orion Subflows and Radar UI - YouTube