Fix for problems with unique value dialog and some postgis tables

git-svn-id: http://svn.osgeo.org/qgis/trunk@7138 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/app/qgsuniquevaluedialog.cpp

@@ -119,8 +119,19 @@ void QgsUniqueValueDialog::apply()
 	renderer->insertValue(it->first,newsymbol);
     }
 
-    renderer->setClassificationField(mClassificationComboBox->currentItem());
-    mVectorLayer->setRenderer(renderer);
+    QgsVectorDataProvider *provider = dynamic_cast<QgsVectorDataProvider *>(mVectorLayer->getDataProvider());
+    if (provider)
+      {
+	int fieldIndex = provider->indexFromFieldName(mClassificationComboBox->currentText());
+	if(fieldIndex > 0)
+	  {
+	    renderer->setClassificationField(fieldIndex);
+	    mVectorLayer->setRenderer(renderer);
+	    return;
+	  }
+      }
+   
+    delete renderer; //something went wrong
 }
 
 void QgsUniqueValueDialog::changeClassificationAttribute()

src/providers/postgres/qgspostgresprovider.cpp

@@ -1178,6 +1178,9 @@ int QgsPostgresProvider::SRCFromViewColumn(const QString& ns, const QString& rel
 
   //relation is table, we just have to add the type
   QString typeSql = "SELECT pg_type.typname FROM pg_attribute, pg_class, pg_namespace, pg_type WHERE pg_class.relname = '" + relname + "' AND pg_namespace.nspname = '" + ns + "' AND pg_attribute.attname = '" + attname_table + "' AND pg_attribute.attrelid = pg_class.oid AND pg_class.relnamespace = pg_namespace.oid AND pg_attribute.atttypid = pg_type.oid";
+  QgsDebugMsg("***********************************************************************************");
+  QgsDebugMsg(typeSql);
+  QgsDebugMsg("***********************************************************************************");
   PGresult* typeSqlResult = PQexec(connection, (const char*)(typeSql.utf8()));
   if(PQntuples(typeSqlResult) < 1)
     {