Fix datetime default with text fields

elpaso · troopa81 · commit 9ba38a78b89d · 2022-01-05T10:47:02.000+01:00
Fixes #46542 Funded by: ARPA Piemonte
diff --git a/src/gui/editorwidgets/qgsdatetimeeditwrapper.cpp b/src/gui/editorwidgets/qgsdatetimeeditwrapper.cpp
@@ -227,15 +227,41 @@ void QgsDateTimeEditWrapper::updateValues( const QVariant &value, const QVariant
       dateTime.setTime( value.toTime() );
       break;
     default:
-      const bool fieldIsoFormat = config( QStringLiteral( "field_iso_format" ), false ).toBool();
-      const QString fieldFormat = config( QStringLiteral( "field_format" ), QgsDateTimeFieldFormatter::defaultFormat( field().type() ) ).toString();
-      if ( fieldIsoFormat )
+      // Field type is not a date/time but we might already have a date/time variant
+      // value coming from a default: no need for string parsing in that case
+      switch ( value.type() )
       {
-        dateTime = QDateTime::fromString( value.toString(), Qt::ISODate );
-      }
-      else
-      {
-        dateTime = QDateTime::fromString( value.toString(), fieldFormat );
+        case QVariant::DateTime:
+        {
+          dateTime = value.toDateTime();
+          break;
+        }
+        case QVariant::Date:
+        {
+          dateTime.setDate( value.toDate() );
+          dateTime.setTime( QTime( 0, 0, 0 ) );
+          break;
+        }
+        case QVariant::Time:
+        {
+          dateTime.setDate( QDate::currentDate() );
+          dateTime.setTime( value.toTime() );
+          break;
+        }
+        default:
+        {
+          const bool fieldIsoFormat = config( QStringLiteral( "field_iso_format" ), false ).toBool();
+          const QString fieldFormat = config( QStringLiteral( "field_format" ), QgsDateTimeFieldFormatter::defaultFormat( field().type() ) ).toString();
+          if ( fieldIsoFormat )
+          {
+            dateTime = QDateTime::fromString( value.toString(), Qt::ISODate );
+          }
+          else
+          {
+            dateTime = QDateTime::fromString( value.toString(), fieldFormat );
+          }
+          break;
+        }
       }
       break;
   }
diff --git a/tests/src/gui/testqgsdatetimeedit.cpp b/tests/src/gui/testqgsdatetimeedit.cpp
@@ -41,6 +41,7 @@ class TestQgsDateTimeEdit: public QObject
     std::unique_ptr<QgsDateTimeEditWrapper> widget4; // For field 3
     std::unique_ptr<QgsDateTimeEditWrapper> widget5; // For field 4
     std::unique_ptr<QgsDateTimeEditWrapper> widget6; // For field 5
+    std::unique_ptr<QgsDateTimeEditWrapper> widget7; // For field 6
     std::unique_ptr<QgsVectorLayer> vl;
 
 };
@@ -68,6 +69,7 @@ void TestQgsDateTimeEdit::init()
   fields.append( QgsField( "time", QVariant::Time ) );
   fields.append( QgsField( "datetime1", QVariant::DateTime ) );
   fields.append( QgsField( "datetime2", QVariant::DateTime ) );
+  fields.append( QgsField( "text", QVariant::String ) );
   vl->dataProvider()->addAttributes( fields );
   vl->updateFields();
   QVERIFY( vl.get() );
@@ -79,12 +81,14 @@ void TestQgsDateTimeEdit::init()
   widget4 = std::make_unique<QgsDateTimeEditWrapper>( vl.get(), 3, nullptr, nullptr );
   widget5 = std::make_unique<QgsDateTimeEditWrapper>( vl.get(), 4, nullptr, nullptr );
   widget6 = std::make_unique<QgsDateTimeEditWrapper>( vl.get(), 5, nullptr, nullptr );
+  widget7 = std::make_unique<QgsDateTimeEditWrapper>( vl.get(), 6, nullptr, nullptr );
   QVERIFY( widget1.get() );
   QVERIFY( widget2.get() );
   QVERIFY( widget3.get() );
   QVERIFY( widget4.get() );
   QVERIFY( widget5.get() );
   QVERIFY( widget6.get() );
+  QVERIFY( widget7.get() );
 }
 
 void TestQgsDateTimeEdit::cleanup()
@@ -319,6 +323,18 @@ void TestQgsDateTimeEdit::testDateTime()
   widget6->setValue( QDate( 1, 1, 1 ) );
   const QDate value6 { widget6->value().toDate() };
   QCOMPARE( value6, QDate( 1, 1, 1 ) );
+
+  // Test for issue GH #46542
+  widget7->setConfig( cfg );
+  QgsDateTimeEdit *dateedit7 = qobject_cast<QgsDateTimeEdit *>( widget7->createWidget( &w ) );
+  QVERIFY( dateedit7 );
+  widget7->initWidget( dateedit7 );
+  QgsFeature f { vl->fields() };
+  f.setAttribute( QStringLiteral( "text" ), QgsExpression{ QStringLiteral( "now()" ) }.evaluate() );
+  widget7->setFeature( f );
+  const QDate value7 { widget7->value().toDate() };
+  QCOMPARE( value7, QDate::currentDate() );
+
 }
 
 QGSTEST_MAIN( TestQgsDateTimeEdit )
