Processing tools don't ask for input layer when choosing directly a multi layer datasource

[qgib]

Author Name: Tobias Wendorff (Tobias Wendorff)
Original Redmine Issue: 18301
Affected QGIS version: 3.4.0
Redmine category:processing/core

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When loading a GeoPackage as an input for processing (direct loading without loading it in QGIS), the tool doesn't ask which layer to use. Tools like intersect, buffer don't work and you can't select the field of a layer.

[qgib]

Author Name: Tobias Wendorff (Tobias Wendorff)

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This is still a problem. It seems like you can't select a layer...

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• assigned_to_id removed Victor Olaya

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• version was changed from 3.0.0 to 3.3(master)
• subject was changed from QGIS3: tools don't ask for a layer (GPKG) to Processing tools don't ask for a layer (GPKG)
• category_id was changed from Processing/QGIS to Processing/Core

[qgib]

Author Name: Andrea Giudiceandrea (@agiudiceandrea)

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Confirmed also for SQLite and FileGDB (maybe others) multilayer containers.

In processing algorithms dialog window it is not possible to properly select a layer ("Select file" in the algorithm dialog window) from GPKG, SQLite, FileGDB (maybe others) multilayer containers as input layer if it is not already present in the map.

It is only possible to select the GPKG / SQLite / FileGDB file but not to specify which of the layer contained in it must be used as input layer. In this case, only the layer with layerid=0 is always used by the processing algorithm.

[qgib]

Author Name: Andrea Giudiceandrea (@agiudiceandrea)

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Confirmed on 3.4.0

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• version was changed from 3.3(master) to 3.4.0

[qgib]

Author Name: Tobias Wendorff (Tobias Wendorff)

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Andrea Giudiceandrea wrote:

Confirmed on 3.4.0

And on 3.5-dev, too. Actually, it's not only GPKG, really all others with multilayers, too: GeoJSON, OSM etc.
At least there should be a warning that only the first (random?) layer gets used.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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Tobias Wendorff wrote:

Andrea Giudiceandrea wrote:

Confirmed on 3.4.0

And on 3.5-dev, too.

not surprising given the age of 3.4

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• subject was changed from Processing tools don't ask for a layer (GPKG) to Processing tools don't ask for input layer when choosing directly a multi layer datasource

[nyalldawson]

Fixed in 3.14