<![CDATA[use view model with only some edit lines]]>Hello,
it's my first project with QT and I have got some lineEdits on my window and I want to update them using (file or read from USB device )
So I want to make the model that can handle reading data from any source based on the clicked button and update the Line edits, and I want my design to follow the View model

I found that QDataWidgetMapper.mapper() should take index -which does not exist in my case I don't use any tableview or trees ,
What is the best practice to handle this case?
also How can i validate user inputs to line Edit in the model view architecture ?

]]>https://forum.qt.io/topic/116731/use-view-model-with-only-some-edit-linesRSS for NodeSat, 22 Aug 2026 07:46:46 GMTTue, 07 Jul 2020 03:19:46 GMT60<![CDATA[Reply to use view model with only some edit lines on Tue, 07 Jul 2020 15:21:23 GMT]]>Hi
Please see
https://doc.qt.io/qt-5/qtwidgets-itemviews-simplewidgetmapper-example.html

You can use a std item model and fill from your file/usb
model = new QStandardItemModel(5, 3, this);

or you can create a custom model that directly can also read itself from the "sources"
https://doc.qt.io/qt-5/qabstractitemmodel.html

]]>https://forum.qt.io/post/605286https://forum.qt.io/post/605286Tue, 07 Jul 2020 15:21:23 GMT<![CDATA[Reply to use view model with only some edit lines on Tue, 07 Jul 2020 14:55:10 GMT]]>@7asna2 any one can help

]]>https://forum.qt.io/post/605276https://forum.qt.io/post/605276Tue, 07 Jul 2020 14:55:10 GMT