Relation-Reference Widget: Values not saved

[saemiw]

You can well select the values from another table as defined by the relation-reference-widget. The values are however not saved to the table. Also if you modify the record it won't save the entry.

Reproduction Steps:

1. digitize a feature and enter a value in a field that is defined by the relation-reference widget
2. select that point to see its attributes
3. in my case the attribute is named "observer". It is not saved and cannot be modified.

Expected behavior:

Save the chosen selection (save chosen "observer" - see video)

Observed behavior:

my field "observer" is not saved (see video)

Video showing the behaviour of QField

https://youtu.be/vckV_gQsUag

Setting in QGIS Desktop Project

QField version: [0.9.3]
QGIS Desktop version: [2.18.3]

Additional information:

• Problem started happening recently, didn't happen in an older version of QField: [Yes]
• Problem can be reliably reproduced, doesn't happen randomly: [Yes]
• Problem happens with all files and projects, not only some files or projects: [didn't check but expect so]
• I used geopackes

[saemiw]

If I add a "observer" is not NULL constraint to that field I am (correctly) not able to save the field. This is an indication that the value reference widget really doesn't write a value into that field (despite the visual appearance).

[saemiw]

update:

First of all it seems important that the fieldname in the referencing and referenced table are identical. When I changed this the widget works and the values are written to the table.

Secondly I notice that the display of the values is slow. In the following video I

1. start QField select point 5. Notice how the observer-field is emtpy.
2. select another point, point 4. Here the value for observer is displayed correctly.
3. Now I go back to point 5 and - surprise - the observer entry is now also visible.

https://youtu.be/hPsJiU3guPc

It seems to me that QField takes some time to get the value? Is that possible? Any explanations for this behaviour?

[m-kuhn]

The issue with different field names is solved in https://github.com/opengisch/QField/releases/tag/release-0.9.4

[m-kuhn]

Issue with usage in identification view addressed in
https://github.com/opengisch/QField/releases/tag/release-0.9.5