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OverviewFelgo 2 Support (Qt 5) › qualified import

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  • #22572

    Theo

    I do a qualified import for felgo (import Felgo 3.0 as FelgoModule) as a solution to namespace problems I had.

    Now I call a method of FileUtils as: fileName = FelgoModule.FileUtils.storageLocation(FelgoModule.FileUtils.DocumentsLocation, nameString)

    this results in a runtime error: TypeError: Property ‘storageLocation’ of object [object Object] is not a function

    How to call this function with a qualified import.??

    #22574

    Alex
    Felgo Team

    Hi,

    you can see examples in the documentation at e.g: https://felgo.com/doc/apps-howto-access-and-store-files/

    The FileUtils are available with the context property fileUtils (lowercase!) just like nativeUtils. For accessing the enums, you can still use the FileUtils type with uppercase.

    Best,
    Alex

    #22576

    Theo

    Hi Alex,

     

    I have read the documentation but the examples do not import Felgo 3.0 in a separate namespace but do the Felgo import as last to prevent namespace errors, something advised by you in several posts. I prefer to import the module in a new namespace as I wrote in the post. Like I said I than get the error storageLocation is not seen as a function of FileUtils, irrespective of using a capital F or not.

    So the question is how to call that function in the qualified namespace?

    #22577

    Alex
    Felgo Team

    I prepared an example following my explanation above:

    import Felgo 3.0 as FelgoModule
    import QtQuick 2.0
          
    FelgoModule.App {
      FelgoModule.NavigationStack {
        FelgoModule.Page {
          title: "Qualified Import"
          
          FelgoModule.AppText {
            text: fileUtils.storageLocation(FelgoModule.FileUtils.DownloadLocation, "_packages/myPackage/myImage.png")
          }
        }
      }
    }
    

    fileUtils is an instance of type FileUtils, available as context property from anywhere. You can read more on the concept of context properties and how to use them yourself here: https://felgo.com/cross-platform-development/how-to-expose-a-qt-cpp-class-with-signals-and-slots-to-qml

    Cheers,
    Alex

    #22578

    Theo

    Ok, thanks Alex.

    I understand that the function call does not need the namespace but the enum does

    Made the change and it works.

    This item is solved

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