dxf export: fix layer assignment (fixes #17126; followup 92091c5)

jef-n · jef-n · commit 15bc5ed0c342 · 2017-09-18T17:20:49.000+02:00
diff --git a/src/core/dxf/qgsdxfexport.cpp b/src/core/dxf/qgsdxfexport.cpp
@@ -1003,7 +1003,7 @@ void QgsDxfExport::writeEntities()
     renderer->startRender( ctx, vl->fields() );
 
     QSet<QString> attributes = renderer->usedAttributes( ctx );
-    int attrIdx = mLayerNameAttribute.value( vl->id(), 1 );
+    int attrIdx = mLayerNameAttribute.value( vl->id(), -1 );
     if ( vl->fields().exists( attrIdx ) )
     {
       QString layerAttr = vl->fields().at( attrIdx ).name();

Original file line number	Diff line number	Diff line change
`@@ -1003,7 +1003,7 @@ void QgsDxfExport::writeEntities()`
`1003`	`1003`	`renderer->startRender( ctx, vl->fields() );`
`1004`	`1004`
`1005`	`1005`	`QSet<QString> attributes = renderer->usedAttributes( ctx );`
`1006`		`- int attrIdx = mLayerNameAttribute.value( vl->id(), 1 );`
	`1006`	`+ int attrIdx = mLayerNameAttribute.value( vl->id(), -1 );`
`1007`	`1007`	`if ( vl->fields().exists( attrIdx ) )`
`1008`	`1008`	`{`
`1009`	`1009`	`QString layerAttr = vl->fields().at( attrIdx ).name();`