Merge pull request #5316 from rldhont/db_manager_update_dblayer

 [FEATURE][needs-docs][DB Manager] Be able to update every Db layer from Postgres, Spatialite and Oracle

Author: rldhont

python/plugins/db_manager/db_manager_plugin.py

@@ -79,24 +79,21 @@ def unload(self):
             self.dlg.close()
 
     def onLayerWasAdded(self, aMapLayer):
+        # Be able to update every Db layer from Postgres, Spatialite and Oracle
         if hasattr(aMapLayer, 'dataProvider') and aMapLayer.dataProvider().name() in ['postgres', 'spatialite', 'oracle']:
-            uri = QgsDataSourceUri(aMapLayer.source())
-            table = uri.table()
-            if table.startswith('(') and table.endswith(')'):
-                self.iface.addCustomActionForLayer(self.layerAction, aMapLayer)
+            self.iface.addCustomActionForLayer(self.layerAction, aMapLayer)
         # virtual has QUrl source
         # url = QUrl(QUrl.fromPercentEncoding(l.source()))
         # url.queryItemValue('query')
         # url.queryItemValue('uid')
         # url.queryItemValue('geometry')
 
     def onUpdateSqlLayer(self):
+        # Be able to update every Db layer from Postgres, Spatialite and Oracle
         l = self.iface.activeLayer()
         if l.dataProvider().name() in ['postgres', 'spatialite', 'oracle']:
-            table = QgsDataSourceUri(l.source()).table()
-            if table.startswith('(') and table.endswith(')'):
-                self.run()
-                self.dlg.runSqlLayerWindow(l)
+            self.run()
+            self.dlg.runSqlLayerWindow(l)
         # virtual has QUrl source
         # url = QUrl(QUrl.fromPercentEncoding(l.source()))
         # url.queryItemValue('query')

python/plugins/db_manager/dlg_sql_layer_window.py

@@ -31,7 +31,7 @@
 from qgis.PyQt.Qsci import QsciAPIs
 from qgis.PyQt.QtXml import QDomDocument
 
-from qgis.core import QgsProject, QgsDataSourceUri
+from qgis.core import QgsProject, QgsDataSourceUri, QgsReadWriteContext
 from qgis.utils import OverrideCursor
 
 from .db_plugins import createDbPlugin
@@ -151,6 +151,12 @@ def __init__(self, iface, layer, parent=None):
             match = re.search('^\((SELECT .+ FROM .+)\)$', sql, re.S)
             if match:
                 sql = match.group(1)
+        if not sql.startswith('(') and not sql.endswith(')'):
+            schema = uri.schema()
+            if schema and schema.upper() != 'PUBLIC':
+                sql = 'SELECT * FROM ' + schema + '.' + sql
+            else
+                sql = 'SELECT * FROM ' + sql
         self.editSql.setText(sql)
         self.executeSql()
 
@@ -328,11 +334,11 @@ def updateSqlLayer(self):
             XMLDocument = QDomDocument("style")
             XMLMapLayers = XMLDocument.createElement("maplayers")
             XMLMapLayer = XMLDocument.createElement("maplayer")
-            self.layer.writeLayerXML(XMLMapLayer, XMLDocument)
+            self.layer.writeLayerXml(XMLMapLayer, XMLDocument, QgsReadWriteContext())
             XMLMapLayer.firstChildElement("datasource").firstChild().setNodeValue(layer.source())
             XMLMapLayers.appendChild(XMLMapLayer)
             XMLDocument.appendChild(XMLMapLayers)
-            self.layer.readLayerXML(XMLMapLayer)
+            self.layer.readLayerXml(XMLMapLayer, QgsReadWriteContext())
             self.layer.reload()
             self.iface.actionDraw().trigger()
             self.iface.mapCanvas().refresh()