Allow clearing heatmap weighting field

nyalldawson · nyalldawson · commit 3961fa26f53e · 2020-05-23T14:19:39.000+10:00
Fixes #20256
diff --git a/src/gui/symbology/qgsheatmaprendererwidget.cpp b/src/gui/symbology/qgsheatmaprendererwidget.cpp
@@ -101,6 +101,7 @@ QgsHeatmapRendererWidget::QgsHeatmapRendererWidget( QgsVectorLayer *layer, QgsSt
   mRadiusUnitWidget->setUnits( QgsUnitTypes::RenderUnitList() << QgsUnitTypes::RenderMillimeters << QgsUnitTypes::RenderPixels << QgsUnitTypes::RenderMapUnits
                                << QgsUnitTypes::RenderPoints << QgsUnitTypes::RenderInches );
   mWeightExpressionWidget->registerExpressionContextGenerator( this );
+  mWeightExpressionWidget->setAllowEmptyFieldName( true );
 
   if ( renderer )
   {

Original file line number	Diff line number	Diff line change
`@@ -101,6 +101,7 @@ QgsHeatmapRendererWidget::QgsHeatmapRendererWidget( QgsVectorLayer *layer, QgsSt`
`101`	`101`	`mRadiusUnitWidget->setUnits( QgsUnitTypes::RenderUnitList() << QgsUnitTypes::RenderMillimeters << QgsUnitTypes::RenderPixels << QgsUnitTypes::RenderMapUnits`
`102`	`102`	`<< QgsUnitTypes::RenderPoints << QgsUnitTypes::RenderInches );`
`103`	`103`	`mWeightExpressionWidget->registerExpressionContextGenerator( this );`
	`104`	`+ mWeightExpressionWidget->setAllowEmptyFieldName( true );`
`104`	`105`
`105`	`106`	`if ( renderer )`
`106`	`107`	`{`