[Solved]TypeError: Cannot read property 'source' of undefined----Should I omit this error message?

[stereomatching]

Using loader to load the component but always get error(warning?or just a state report?) message

main.qml
@
import QtQuick 2.1
import QtQuick.Controls 1.0
import QtQuick.Layouts 1.0
import QtQuick.Dialogs 1.0

Rectangle {
width: 100
height: 62

ImageView{
    id:imView

    anchors.fill: parent
}

Image{
    anchors.fill: parent
   //this is where the problem come from
    source: imView.getCurrentFile()
}

}

@

ImageView
@
import QtQuick 2.0
import QtQuick.Controls 1.0
import QtQuick.Layouts 1.0

Rectangle {
width: 100
height: 62

function appendFiles(files){
    for(var i = 0; i != files.length; ++i){
        filesModel.append({"source": files[i]})
    }
}

//this is where the problem come from
function getCurrentFile(){
if(loader.status == Loader.Ready){
return filesModel.get(loader.item.currentRow).source
}

    return "-1"
}

ListModel{
    id: filesModel
}

Loader{
    id: loader

    sourceComponent: tableViewHeavyComponent
}

Component{
    id: tableViewHeavyComponent

    TableView{

    }
}

}
@

Could I safely omit this error message, if not
how should I deal with it?

[Gennon]

Are you having a list of images (filenames) and then an image showing the selected image?

I would perhaps add a signal to the ImageView for when the selected image is ready and then add it to the source of the Image.

@ ImageView{
id:imView

    anchors.fill: parent

    onReady: imageContainer.source = theImageSource;
}

Image{
id: imageContainer
anchors.fill: parent
}

@

theImageSource would then be a property in the ImageView that exposes the current source for instance. Or you could just use the function.

This might fix your issue.

[stereomatching]

Thanks, I found another solution

@
if(layoutLoader.status == Loader.Ready && filesModel.count != 0){
return filesModel.get(layoutLoader.item.currentRow).source
//return filesModel.get(tableView.currentRow).source
}
@

Check the number of the ListModel before query the source
The filesModel can't find property source because I haven't insert
anything into it

edit : add one more condition "layoutLoader.item.currentRow != -1", else it would emit error message
when you do not select any image