Sure:
if isinstance(layer.rendererV2(), QgsCategorizedSymbolRendererV2):
symbol = layer.rendererV2().categories()[0].symbol()
It's here:
https://github.com/tomchadwin/qgis2web/blob/leafletRefactor/leafletScriptStrings.py#L376
To recreate:
1. Install the qgis2web leafletRefactor branch from Github
2. Open a point layer
3. Select a categorized renderer
4. Use an SVG marker instead of a simple marker
5. Start qgis2web
6. Click "Leaflet" to switch to Leaflet output
That triggers the error for me. Brief searching suggests something to do
with losing a reference to the canvas or ToC, or something. I'm on Win7 x64,
64-bit QGIS from OSGeo4W installer, 2.16.3 (also tried with an elderly
master2 - 0497e4a).
Any help gratefully received - I'm not experienced at debugging lower-level
issues than Python errors...
Thanks
Tom
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