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Diffstat (limited to 'src/qml/doc/src/qmllint/unresolved-alias.qdoc')
| -rw-r--r-- | src/qml/doc/src/qmllint/unresolved-alias.qdoc | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/qml/doc/src/qmllint/unresolved-alias.qdoc b/src/qml/doc/src/qmllint/unresolved-alias.qdoc new file mode 100644 index 0000000000..63b02613dd --- /dev/null +++ b/src/qml/doc/src/qmllint/unresolved-alias.qdoc @@ -0,0 +1,50 @@ +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only + +/*! +\page qmllint-warnings-and-errors-unresolved-alias.html +\ingroup qmllint-warnings-and-errors + +\title Unresolved Alias +\brief Property of property alias was not found. + +\section1 Unresolved Alias + +\section2 What happened? +A property alias should hold a reference to another property, see also +\l{QML Object Attributes#property-aliases}{QML Object Attributes - Property Aliases}. +In this case, it holds a reference to a property that was not found. + +\section2 Why is this bad? +Instances of components with unresolved alias will not be created at runtime: +they will be null instead. + +\section2 Example +\qml +import QtQuick + +Item { + id: someId + property int helloWorld + + property alias helloWorldAlias: helloWorld // not ok: aliases have to refer by id + property alias helloWorldAlias2: someId.helloWorlddd // not ok: no helloWorlddd in someId + property alias helloWorldAlias3: someIddd.helloWorld // not ok: someIddd does not exist +} + +\endqml +You can fix this warning by making sure that the id and the properties of the alias property +really do exist: +\qml +import QtQuick + +Item { + id: someId + property int helloWorld + + property alias helloWorldAlias: someId.helloWorld // ok: alias refers by id + property alias helloWorldAlias2: someId.helloWorld // ok: helloWorld does exist in someId + property alias helloWorldAlias3: someId.helloWorld // ok: someId does exist +} +\endqml +*/ |