QGIS
QGIS copied to clipboard
qgis
Default values depending on other fields are not correctly applied when field not part of form made by Drag and Drop Designer
What is the bug or the crash?
I have a vector layer with two fields: field_a and field_b and I have set up an attribute form using the Drag and Drop Designer. In my case, "field_a" is editable and has no default value. On the other hand, "field_b" is not editable, but has a default value definition in which "field_a" is used, e.g. like title("field_a").
Now, if "field_b" is not part of the attribute form set up using the drag and drop designer, it appears that the default value is not applied when adding or modifying features. In fact, the return value of "field_a" (as used in the default value expression) is always NULL. This does not happen if "field_b" is present in the form.
Steps to reproduce the issue
Download the sample_project.zip
- Open the sample project from the attached geopackage
- In the TOC select "test_layer_a" and digitize a new feature
- For "field_a" type in e.g. "london", hit OK
- Select "test_layer_b" repeat the prevvious steps
Versions
| QGIS version | 3.36.2-Maidenhead | QGIS code revision | 6d250527 |
|---|---|---|---|
| Qt version | 5.15.13 | ||
| Python version | 3.12.3 | ||
| GDAL/OGR version | 3.8.5 | ||
| PROJ version | 9.4.0 | ||
| EPSG Registry database version | v11.004 (2024-02-24) | ||
| GEOS version | 3.12.1-CAPI-1.18.1 | ||
| SQLite version | 3.45.1 | ||
| PDAL version | 2.6.3 | ||
| PostgreSQL client version | 16.2 | ||
| SpatiaLite version | 5.1.0 | ||
| QWT version | 6.2.0 | ||
| QScintilla2 version | 2.14.1 | ||
| OS version | Windows 11 Version 2009 | ||
| Active Python plugins | |||
| db_manager | 0.1.20 | ||
| grassprovider | 2.12.99 | ||
| MetaSearch | 0.3.6 | ||
| processing | 2.12.99 |
Supported QGIS version
- [X] I'm running a supported QGIS version according to the roadmap.
New profile
- [X] I tried with a new QGIS profile
Additional context
No response
