[Qgis-developer] QgsMapLayerRegistry [partially solved]

[Michele Mammini]

Hi Germán,

maybe I discover why the system crash...

my plugin have a form that work on the active layer.
On the OK button these operations will be done:
    * get the properties of the active layer that 
is based on a pg view (like sql, name, ...)
    * remove the layer from QGis using the removeMapLayer function
    * perform some filter on the data
    * create a new view based on the filter
    * load a layer based on the view using addMapLayer function
This last command, addMapLayer, togheter with 
second one removeMapLayer, create a crash!

I solve the problem in this way: instead of 
remove the layer, I replace my view with the new sql but with the same name.
To view the new result it is easy to refresh the MapCanvas.

Michele.

At 18.21 08/10/2009, Germán Carrillo wrote:
>Hi Michele.
>
>I guess you must update the canvas layer set 
>after remove a layer from QgsMapLayerRegistry.
>
>
>Germán Carrillo
>
>
>2009/10/8 Michele Mammini <<mailto:mamminim at yahoo.it>mamminim at yahoo.it>
>Like in the subject I solved a part of my problem.
>
>The correct code to remove the layer from QGis is:
>      currentLayer = self.iface.activeLayer()
>      RegIns = QgsMapLayerRegistry.instance()
>      RegIns.removeMapLayer(currentLayer.getLayerID())
>
>but it working if i use it in Python Console, 
>while QGis crash if I use it in my plugin code
>
>
>
>
>Dear All,
>
>i have a problem with QgsMapLayerRegistry class 
>when i try to remove a Layer from QGis.
>
>i use this two code line:
>      RegIns = QgsMapLayerRegistry.instance()
>      RegIns.removeMapLayer(layerName)
>
>where layerName is set with this command line: 
>layerName = self.iface.activeLayer().name()
>
>Do someone know how to solve it?
>
>Thank you Michele.
>
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