Bug report #19038

Objects queried by QuickOSM are not automatically saved in project file and lost when re-starting QGIS (3)

Added by Sebastian Ernst almost 6 years ago. Updated over 5 years ago.

Affected QGIS version:3.0.1 Regression?:No
Operating System:Linux Easy fix?:No
Pull Request or Patch supplied:No Resolution:fixed/implemented
Crashes QGIS or corrupts data:Yes Copied to github as #:26868


Reproducible in the following environments

  • QGIS 3.0.1 on openSUSE Leap 15 + QuickOSM 1.6.1
  • QGIS 3.0.3 on Linux Mint 18.3 + QuickOSM 1.6.1

Steps to reproduce

  • Start QGIS 3
  • Menu: Project > New
  • Menu: Web > QuickMapServices > OSM > OSM Standart [optional step for OSM background tiles]
  • Menu: Vector > Quick OSM > QickOSM
  • Set query parameters to: {key: leisure, value: park, in: Leipzig}
  • Run query ...
  • Result so far: 3 new layers (with 599, 98 and 128 objects)
  • Menu: Project > Save as ... "test.qgs"
  • Menu: Project > Quit QGIS
  • At this point, QGIS will ask: "Save current project?" I chose "Save".
  • Start QGIS again
  • Open "test.qgs" - all three new layers exist, but they contain ZERO objects


After saving the project and before closing QGIS, save every new layer as a geo package. This way, I at least do not loose the polygons although the layers created by QuickOSM will be empty after re-starting QGIS.


Is is a bug in QuickOSM or QGIS or both? Or is this some sort of new intended behavior in QGIS 3?

For reference, I also filed an issue against QuickOSM: https://github.com/3liz/QuickOSM/issues/115


#1 Updated by Etienne Trimaille almost 6 years ago

This issue tracker is related to QGIS software, not for plugin. This issue can closed.

#2 Updated by Sebastian Ernst almost 6 years ago

Etienne Trimaille wrote:

This issue tracker is related to QGIS software, not for plugin. This issue can closed.

I understand that. Given the above description, I do not know who is at fault. Is it QGIS or is it the plugin? The plugin fetches the objects - only. QGIS fails to save them to disk.

#3 Updated by Etienne Trimaille almost 6 years ago

The plugin creates memory layer. QGIS is not able to save memory layer. I agree QGIS should have a warning when we save this kind of layers.

#4 Updated by Alessandro Pasotti over 5 years ago

  • Priority changed from Normal to Low

Lowering priority for now, I think it should be closed in favor of opening an issue against the plugin.

#5 Updated by Etienne Trimaille over 5 years ago

It's not QuickOSM fault. It's stated in the UI, in the advanced panel, when you execute the query: "save to temporary files".
It's exactly the same behavior with QGIS Processing creating temporary layers.

QGIS should display a warning when we save a QGS project and:
- layers are stored in the temporary folder (/tmp etc)
- layers are in memory (source: Point?crs=EPSG:4326&field=full_id:.....&uid={2e18cdf3-f07b-42be-9911-e5d01584da57} )

#6 Updated by Nyall Dawson over 5 years ago

  • Resolution set to fixed/implemented
  • Status changed from Open to Closed

Fixed in master and 3.2.2

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