OverviewFelgo 1 Support › questions about database

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    For getValue

    Storage::getValue( key, callback)

    is the callback mandatory or optional? It seems optional when using localStorage only, but I just wanted to check.


    Also about setting a database name using

    databaseName : string

    like so

        Storage {
          id: myLocalStorage
          databaseName: "words"
          onStorageError: {
            console.debug("myLocalStorage: there was an error:", errorData.message)

    (similar to my previous posting example) but I noticed the sqlite filename in the storage area (for windows)


    is still showing a random key like filename instead of ‘words’. Is it expected? How can I get it to be named?



    Felgo Team

    Hi Michael,

    the callback is optional and just another way to read the value. It rather is useful for the WebStorage component, which fetches the data from the web and this can take a while so an asynchronous callback is added for compatibility reasons also for the local Storage component.

    If you have a look at the Storage.qml implemenation of the logic, done in storage.js, you will see the identifier of your application is prepended as the local database name to prevent colliding database names with other applications. If you want to customize this behavior, you can copy the source code of Storage.qml and storage.js and modify it to meet your requirements in an own storage component.

    Cheers, Chris

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