Make it possible to update a related table after an external update

When a table that is related to in a QSqlRelationalTableModel gets
updated in some way (e.g. a new row, or the data is changed) then the
related model could not be updated without recreating the
QSqlRelationalTableModel.

Now, to get around this, select() can be called on the related model to
get it to be updated.

Task-number: QTBUG-7885
Reviewed-by: Charles Yin
Reviewed-by: Michael Goddard

Change-Id: Ic589e840234f3a809bcb112a807a87afe0bc25ca

1 files changed, 23 insertions, 0 deletions

diff --git a/tests/auto/qsqlrelationaltablemodel/tst_qsqlrelationaltablemodel.cpp b/tests/auto/qsqlrelationaltablemodel/tst_qsqlrelationaltablemodel.cpp
index cc4ab67d53..5f1a6211aa 100644
--- a/tests/auto/qsqlrelationaltablemodel/tst_qsqlrelationaltablemodel.cpp
+++ b/tests/auto/qsqlrelationaltablemodel/tst_qsqlrelationaltablemodel.cpp
@@ -92,6 +92,7 @@ private slots:
     void escapedTableName();
     void whiteSpaceInIdentifiers();
     void psqlSchemaTest();
+    void selectAfterUpdate();
 
 private:
     void dropTestTables( QSqlDatabase db );
@@ -1467,5 +1468,27 @@ void tst_QSqlRelationalTableModel::psqlSchemaTest()
     QVERIFY_SQL(model, select());
 }
 
+void tst_QSqlRelationalTableModel::selectAfterUpdate()
+{
+    QFETCH_GLOBAL(QString, dbName);
+    QSqlDatabase db = QSqlDatabase::database(dbName);
+    CHECK_DATABASE(db);
+
+    QSqlRelationalTableModel model(0, db);
+    model.setTable(reltest1);
+    model.setRelation(2, QSqlRelation(reltest2, "tid", "title"));
+    QVERIFY_SQL(model, select());
+    QVERIFY(model.relationModel(2)->rowCount() == 2);
+    {
+        QSqlQuery q(db);
+        QVERIFY_SQL(q, exec("insert into " + reltest2 + " values(3, 'mrs')"));
+        model.relationModel(2)->select();
+    }
+    QVERIFY(model.relationModel(2)->rowCount() == 3);
+    QVERIFY(model.setData(model.index(0,2), 3));
+    QVERIFY(model.submitAll());
+    QCOMPARE(model.data(model.index(0,2)), QVariant("mrs"));
+}
+
 QTEST_MAIN(tst_QSqlRelationalTableModel)
 #include "tst_qsqlrelationaltablemodel.moc"