Transfer attributes from parent to child feature using @current_parent_feature

[cratcliff]

I'm trying to transfer values from a parent feature to a child by using attribute(@current_parent_feature,'Site') as the default expression and then use the values for photo filenames.

I am trying to use @current_parent_feature over other solutions like attribute(get_attribute( ) ) as the layer name/id and relationship name/ids will change.

Currently the values from the parent are retrieved and displayed in child form correctly, but aren't saved or accessible unless edited (i.e. add a space/hyphen). As a result they aren't accessible by the photo naming expression either.

Is it possible to use @current_parent_feature in this way with Qfield?

The following shows the behavior I am experiencing.

I have also included a simplified QGIS project & packaged QField project to demonstrate.

I am using QGIS 3.36.2-Maidenhead for Windows, QField Sync 4.9.1 and Qfield 3.2.2-Congo on Android 14 (Samsung Active 4 Pro).

[m-kuhn]

Thank you for reporting this, @cratcliff

We have made a couple of improvements in this area, could you check if this is still an issue with QField 3.3?

[cratcliff]

@m-kuhn Yes, it is still an issue. I'm now using Qfield 3.3.1-Darien(6b9cd v3.3.1) and QGIS 3.36.3-Maidenhead.

[cratcliff]

@m-kuhn I've just upgraded again to 3.3.2 Darien (a2b463 v3.3.2) and it is still an issue.

[nirvn]

@cratcliff , thanks for providing a test project. A fix to the issue raised in this discussion has been found. You can test the APKs that will appear here to confirm it works as expected: #5356