Adding a layer from py plugin, with QgsVectorLayer.setEditFormInit (QString function) set

[qgib]

Author Name: jaanussuvi - (jaanussuvi -)
Original Redmine Issue: 2700

Redmine category:python_plugins

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Briefly about my case:
I created a python plugin,
and it creates [[QgsVectorLayer]]'s from Postgis database.
I do add qml styles to my layers, with layer.loadNamedStyle(path_to_qml).
And in qml i've specified form init functions in python myInitMethod
I'm trying to initilize some data fields with editforminit function.

The problem:

1. i add a layer with my plugin

2. select the added layer which has specified

3. toggle the layer to edit mode

4. try to add a layer object to map, click on the map

5. then qgis always craches

Problem is only when i have set editforminit function.

but if i do
steps

• (save project)

• (close and open qgis)

before adding new object to my layer, then editforminit function is invoked and everything works.

Maybe there's a workaround?
Maybe some refreshing?

I do after adding layers:

self.iface.refreshLegend(myLayer)

self.iface.mapCanvas().refresh()

[qgib]

Author Name: Giovanni Manghi (@gioman)

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Hi,

feedback to your problem the problem would be better asked in the developer mailing list.

[qgib]

Author Name: Alex Mandel (Alex Mandel)

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Needs to be retested on a newer trunk, not a showstopper for release.

[qgib]

Author Name: Martin Dobias (@wonder-sk)

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This could have been fixed recently in 52a49c9 (SVN r13752), please test again.

If the problem persists, please provide further information how to replicate the problem. Can you simply add a layer and set a QML with "editforminit" function to get the crash (without using the plugin)?

[qgib]

Author Name: Giuseppe Sucameli (@brushtyler)

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No user's inputs for 5 weeks...
I tick the "awaiting user input" checkbox and hope.

[qgib]

Author Name: jaanussuvi - (jaanussuvi -)

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Replying to [comment:4 wonder]:

This could have been fixed recently in 52a49c9 (SVN r13752), please test again.

Sorry, I've finished my project with the´plugin, and i do not have development environment setup anymore. So it's really time consuming to test it. btw the plugin doesn't use custom editform or init function. I solved it differently.
I think this approach was too complex anyway.

If the problem persists, please provide further information how to replicate the problem. Can you simply add a layer and set a QML with "editforminit" function to get the crash (without using the plugin)?

Yes, if i add a postgis layer to my qgis project with custom editform, then it works fine. But if i add postgis layer with python, and try to add new object to the layer, then it does not work. But if i save newly created layer to gqis project and restart gqis, then it works.

How to replicate:
Also complex task, if not having the setup.
I believe it could be done with python console.

U should have postgis db and qml for some geo object.
in qml of course myInitMethod

Code that creates vector layer from postgis:
uri = qgis.core.QgsDataSourceURI()
uri.setDataSource("your_schema", "your_geo_table", "the_geom", subset_sql)
vl = qgis.core.QgsVectorLayer(uri.uri(), "layer_name", "postgres")
vl.loadNamedStyle(QString(qml_path + "vl.qml"))
qgis.core.QgsMapLayerRegistry.instance().addMapLayer(vl, True)
self.iface.refreshLegend(vl
self.iface.mapCanvas().refresh()

Sorry, i'm too busy with new projects.
I hope my description helps.

[qgib]

Author Name: Paolo Cavallini (@pcav)

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Closing it pending reporter check. Please reopen it if necessary.

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• resolution was configured as fixed
• status_id was changed from Open to Closed