Feature request #8893

raise warning if an expression cannot be evaluated.

Added by Regis Haubourg about 11 years ago. Updated over 7 years ago.

Status:Open
Priority:Normal
Assignee:-
Category:Unknown
Pull Request or Patch supplied:No Resolution:
Easy fix?:No Copied to github as #:17571

Description

Hi,
when opening an existing project using expressions or sql queries in Rule based classes or labels or feature subset, if expression cannot be evaluated, no warning is raised.
For example, the data field names have changed.
User have some empty classes, or totally empty classes or labels, and finding why can be long.
Having a soft warning would be sufficient. Something like "expression XXX on layer (labeling / style) could not be evaluated... please check"
Cheers
Régis


Related issues

Related to QGIS Application - Bug report #9071: Filter queries ignore "" Closed 2013-11-16

History

#1 Updated by Giovanni Manghi over 7 years ago

  • Easy fix? set to No

#2 Updated by Jürgen Fischer over 7 years ago

  • Category set to Unknown

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