Bug report #15952

Allow null in value relation widget should be closely tighted with the not null constraint

Added by Denis Rouzaud almost 6 years ago. Updated over 3 years ago.

Assignee:Nyall Dawson
Category:Edit widget
Affected QGIS version:2.18.0 Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:end of life
Crashes QGIS or corrupts data:No Copied to github as #:23868


It feels unnatural to have 2 options related to null values in the value relation widget.
I would propose to remove it from the widget definition (the allow null values checkbox) and to use main constraint to define the widget behavior.

2.18 + master

Screen Shot 2017-05-21 at 1.24.57 AM.png (33 KB) Eron Lloyd, 2017-05-21 07:25 AM


#1 Updated by Denis Rouzaud almost 6 years ago

  • Subject changed from Not null in value relation widget should be closely tighted with the not null constraint to Allow null in value relation widget should be closely tighted with the not null constraint

#2 Updated by Giovanni Manghi over 5 years ago

  • Easy fix? set to No
  • Regression? set to No

#3 Updated by Eron Lloyd over 5 years ago

Agreed. Also, at least when using a GeoPackage, I'm seeing that the null constraint cannot be satisfied with a proper value when creating a feature. The OK button remains disabled.

#4 Updated by Giovanni Manghi over 3 years ago

  • Resolution set to end of life
  • Status changed from Open to Closed

End of life notice: QGIS 2.18 LTR


QGIS 3.4 has recently become our new Long Term Release (LTR) version. This is a major step in our history – a long term release version based on the massive updates, library upgrades and improvements that we carried out in the course of the 2.x to 3x upgrade cycle.

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