Bug report #17400: GetFeatureInfo "Layer not found" error - QGIS Application - QGIS Issue Tracking

Bug report #17400

GetFeatureInfo "Layer not found" error

Added by Éric Lemoine about 7 years ago. Updated about 7 years ago.

Status:	Closed
Priority:	High
Assignee:	Paul Blottiere
Category:	QGIS Server
Affected QGIS version:	master	Regression?:	No
Operating System:		Easy fix?:	No
Pull Request or Patch supplied:	No	Resolution:
Crashes QGIS or corrupts data:	No	Copied to github as #:	25297

Description

QGIS Server returns "Layer not found" errors on GetFeatureInfo queries with out-of-scale layers.

This is the query:

http://197.157.195.138/qgis/cid?service=WMS&version=1.1.1&request=GetFeatureInfo&srs=EPSG:3857&info_format=text%2Fxml&x=51&y=51&exceptions=application%2Fjson&id=1509025731902&layers=Communes&query_layers=Communes&height=101&width=101&bbox=3282411.2320540333,-398477.5109080996,3310804.3310123663,-370084.4119497662&feature_count=10&FI_POINT_TOLERANCE=16&FI_LINE_TOLERANCE=8&FI_POLYGON_TOLERANCE=4

It has

query_layers=Communes

The corresponding GetMap query works as expected:

http://197.157.195.138/qgis/cid?service=WMS&version=1.1.1&request=GetMap&srs=EPSG:3857&exceptions=application%2Fjson&id=1509025731902&layers=Communes&height=101&width=101&bbox=3282411.2320540333,-398477.5109080996,3310804.3310123663,-370084.4119497662

I've figured that the issue is related to the visibility of the layer. If the layer is scale-dependant and not visible at the current scale then QGIS Server returns a "Layer not found" error.

That behaviour is not correct. An empty response should be received instead of an error. It is a major bug!