+10Can the dynamic parameters in FME Flow Apps, as described here:
Dynamic Parameter Configurations in FME Flow Apps – FME Support Center
be made to cascade, i.e. so the value chosen in one parameter affects the choices available in another?
How does one structure the JSON to do this?
Best answer by zoe.forbes
Hi
Thanks for your post! This isn’t directly possible, but a similar thing can be done with two workspaces and workspace apps:
The first workspace app does not necessarily use dynamic parameters. The first parameter you mentioned is found here, and this workspace generates JSON which is passed into the second workspace app. The JSON is passed via an HTTP redirect.
The second workspace app does use dynamic parameters, receiving the configuration passed from the first workspace. Here is when you would actually run the transformation.
This can be a little hard to understand conceptually, so I put together a quick demo. In the first workspace app ChooseContinent, you select a continent. After running, you’re redirected to a second workspace app ChooseCountry where the choices available depend on your previous selection. This is available to try out here, and the project is attached.
Please let me know if you have questions!
+9Hi
Thanks for your post! This isn’t directly possible, but a similar thing can be done with two workspaces and workspace apps:
The first workspace app does not necessarily use dynamic parameters. The first parameter you mentioned is found here, and this workspace generates JSON which is passed into the second workspace app. The JSON is passed via an HTTP redirect.
The second workspace app does use dynamic parameters, receiving the configuration passed from the first workspace. Here is when you would actually run the transformation.
This can be a little hard to understand conceptually, so I put together a quick demo. In the first workspace app ChooseContinent, you select a continent. After running, you’re redirected to a second workspace app ChooseCountry where the choices available depend on your previous selection. This is available to try out here, and the project is attached.
Please let me know if you have questions!
