Bug report #20714
Value relation widget with multiple selection don't work anymore with custom UI
|Affected QGIS version:||3.5(master)||Regression?:||Yes|
|Operating System:||Debian Buster||Easy fix?:||No|
|Pull Request or Patch supplied:||No||Resolution:||wontfix|
|Crashes QGIS or corrupts data:||No||Copied to github as #:||28534|
In QGIS master and the release-3_4 branch, adding a custom UI with a list widget (value relation) pointing to an array column in Postgresql doesn't work anymore.
I don't see the List widget cannot be editable.
On the left side of the below picture is the currently look versus the 2.18 on the right side:
I tried using a QgsCheckableComboBox and although I can see the workers and select them QGIS tries to save the last selected one as an integer and it doesn't work (as I have an array of integers in the column).
You can bypass this by writing code but I would have expected that a custom UI just worked for this case.
I've attached a test project.
Step 1, create the tables:
CREATE DATABASE bugtest; \c bugtest; CREATE TABLE work_planning (id serial PRIMARY KEY, fk_workers integer); CREATE TABLE workers (id serial PRIMARY KEY, worker varchar(100)); INSERT INTO workers (worker) SELECT 'worker 1'; INSERT INTO workers (worker) SELECT 'worker 2'; INSERT INTO workers (worker) SELECT 'worker 3'; INSERT INTO workers (worker) SELECT 'worker 4';
Step 2, open the bugtest.qgs project with Master or Madeira and try to add a new work_planning feature:
It doesn't work.
It works on the bugtest2.18.qgs if you open it in 2.18.
The widget settings:
#1 Updated by Denis Rouzaud over 2 years ago
- Resolution set to wontfix
- Status changed from Open to Feedback
QGIS expects it to be a table widget.
This has changed here https://github.com/qgis/QGIS/commit/471e67f1fb635fb8b6486eb02c42d8934df016e7#r31566504
I would propose to keep it as is if it's ok for you.