Fixes #17466: DB Manager does not refresh correctly map in layer preview

slarosa · slarosa · commit 5d8963a4a824 · 2017-11-14T22:46:58.000+01:00
diff --git a/python/plugins/db_manager/layer_preview.py b/python/plugins/db_manager/layer_preview.py
@@ -34,7 +34,7 @@
 class LayerPreview(QgsMapCanvas):
 
     def __init__(self, parent=None):
-        QgsMapCanvas.__init__(self, parent)
+        super(QgsMapCanvas, self).__init__(parent)
         self.parent = parent
         self.setCanvasColor(QColor(255, 255, 255))
 
@@ -131,3 +131,4 @@ def _loadTablePreview(self, table, limit=False):
             self.currentLayer = vl
 
             self.freeze(False)
+            super().refresh()
