Bug report #18159: Bug on macros(?!) - QGIS Application - QGIS Issue Tracking

Bug report #18159

Bug on macros(?!)

Added by Simon Georget about 6 years ago. Updated over 5 years ago.

Status:	Closed
Priority:	Normal
Assignee:	-
Category:	PyQGIS Console
Affected QGIS version:	2.18.16	Regression?:	No
Operating System:	Ubuntu 16.04	Easy fix?:	No
Pull Request or Patch supplied:	No	Resolution:	fixed/implemented
Crashes QGIS or corrupts data:	No	Copied to github as #:	26052

Description

Hi,

I created an OpenProject macro butI get the following error when opening the project.

Une erreur est survenue lors de l'exécution du code suivant:
qgis.utils.reloadProjectMacros()

traceback.print_exception() failed

Version de Python :
2.7.12 (default, Dec  4 2017, 14:50:18) 
[GCC 5.4.0 20160609]

Version de QGIS :
2.18.16 'Las Palmas', d473c30

Chemin vers Python :

My macro is running well on python console.
Running the following code in python console again triggers an error :

from qgis.utils import reloadProjectMacros
reloadProjectMacros()

Here is the error message :

reloadProjectMacros()
Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 497, in reloadProjectMacros
    openProjectMacro()
  File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 514, in openProjectMacro
    mod.openProject()
  File "<string>", line 4, in openProject
NameError: global name 'QgsMapLayerRegistry' is not defined

Thanks for you support

History

#1 Updated by Salvatore Larosa about 6 years ago

Status changed from Open to Feedback

Could be your macro missing the import to QgsMapLayerRegistry class? It seems you are using it, isn't?

#2 Updated by Simon Georget about 6 years ago

Indeed I do,

Actually my macro is quite basic :

def openProject():
    from qgis.gui import QgsMapCanvas;
    from qgis.gui import QgsMessageBar;
    registry = QgsMapLayerRegistry.instance();
    canvas = iface.mapCanvas();
    layer = registry.mapLayersByName( 'mylayer' )[0];
    canvas.setExtent(layer.extent());
    canvas.refresh();

#3 Updated by Regis Haubourg about 6 years ago

Hi,

this works here:

    from qgis.core import QgsMapLayerRegistry
    from qgis.gui import QgsMapCanvas
    from qgis.gui import QgsMessageBar
    from qgis.utils import iface
    canvas = iface.mapCanvas()
    registry = QgsMapLayerRegistry.instance()
    layer = registry.mapLayersByName( u'tracks (offline)' )[0]
    canvas.setExtent(layer.extent())
    canvas.refresh()
    pass

beware of having the 4 spaces indentations and not tab. I also added import for iface and QgsMapLayerRegistry.

Under linux, the stacktrace is not raised as in windows, which is pretty annoying. See #16923

#4 Updated by Regis Haubourg about 6 years ago

Status changed from Feedback to Closed
Resolution set to invalid

#5 Updated by Simon Georget about 6 years ago

Hi Regis,

Thanks for support but I still have the same issue, even importing iface and QgsMapLayerRegistry (and with 4 spaces indent)

#6 Updated by Simon Georget about 6 years ago

Status changed from Closed to Reopened

#7 Updated by Giovanni Manghi about 6 years ago

Status changed from Reopened to Feedback
Resolution deleted (~~invalid~~)
Subject changed from Bug on macros !? to Bug on macros(?!)

Simon Georget wrote:

Hi Regis,

Thanks for support but I still have the same issue, even importing iface and QgsMapLayerRegistry (and with 4 spaces indent)

any error?

#8 Updated by Simon Georget about 6 years ago

Thanks Giovanni. The error message is provided on the first post.

#9 Updated by Jürgen Fischer over 5 years ago

Please test with QGIS 3.4 - QGIS 2.18 reached it's end of life.

#10 Updated by Simon Georget over 5 years ago

Jürgen Fischer wrote:

Please test with QGIS 3.4 - QGIS 2.18 reached it's end of life.

Hey Jürgen. Thanks for coming back to me. I still have the same error with 3.4.3-Madeira - revision 2f64a3c
!

Une erreur est survenue lors de l'exécution du code suivant:
qgis.utils.reloadProjectMacros()

Traceback (most recent call last):
  File "", line 1, in 
  File "/usr/lib/python3/dist-packages/qgis/utils.py", line 499, in reloadProjectMacros
    openProjectMacro()
  File "/usr/lib/python3/dist-packages/qgis/utils.py", line 516, in openProjectMacro
    mod.openProject()
  File "", line 2, in openProject
ImportError: cannot import name 'QgsMapLayerRegistry'

#11 Updated by Nyall Dawson over 5 years ago

QgsMapLayerRegistry doesn't exist in 3.x -- you'll need to update your code for the 3.x API.

#12 Updated by Simon Georget over 5 years ago

Nyall Dawson wrote: