[DbManager] allow to delete materialized views

(refs #13829)

python/plugins/db_manager/db_plugins/postgis/connector.py

@@ -794,8 +794,8 @@ def createView(self, view, query):
     def createSpatialView(self, view, query):
         self.createView(view, query)
 
-    def deleteView(self, view):
-        sql = u"DROP VIEW %s" % self.quoteId(view)
+    def deleteView(self, view, isMaterialized=False):
+        sql = u"DROP %s VIEW %s" % ('MATERIALIZED' if isMaterialized else '', self.quoteId(view))
         self._execute_and_commit(sql)
 
     def renameView(self, view, new_name):

python/plugins/db_manager/db_plugins/postgis/plugin.py

@@ -23,7 +23,7 @@
 # this will disable the dbplugin if the connector raise an ImportError
 from .connector import PostGisDBConnector
 
-from PyQt4.QtCore import QSettings, Qt, QRegExp
+from PyQt4.QtCore import QSettings, Qt, QRegExp, SIGNAL
 from PyQt4.QtGui import QIcon, QAction, QApplication, QMessageBox
 from qgis.gui import QgsMessageBar
 
@@ -227,6 +227,16 @@ def tableDataModel(self, parent):
 
         return PGTableDataModel(self, parent)
 
+    def delete(self):
+        self.aboutToChange()
+        if self.isView:
+            ret = self.database().connector.deleteView((self.schemaName(), self.name), self._relationType == 'm')
+        else:
+            ret = self.database().connector.deleteTable((self.schemaName(), self.name))
+        if ret is not False:
+            self.emit(SIGNAL('deleted'))
+        return ret
+
 
 class PGVectorTable(PGTable, VectorTable):