GetFeatureInfo "Layer not found" error

[qgib]

Author Name: Éric Lemoine (@elemoine)
Original Redmine Issue: 17400
Affected QGIS version: master
Redmine category:qgis_server
Assignee: Paul Blottiere

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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!

[qgib]

Author Name: Paul Blottiere (Paul Blottiere)

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• assigned_to_id was configured as Paul Blottiere

[qgib]

Author Name: Paul Blottiere (Paul Blottiere)

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Applied in changeset 39bce94.

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• done_ratio was changed from 0 to 100
• status_id was changed from Open to Closed