[Interest] Modify object list in qml

[Oleg Evseev]

Nice. Thanks Jérôme!

2017-11-29 23:00 GMT+03:00 Jérôme Godbout <jerome at bodycad.com>:

> model: (myCondition ? [0] : []).concat(DB.getList())
>
> Take care:
> DB.getList().concat([...])
> will not work you would need to convert the QList to JS array first
>
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> Jerome Godbout
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> On Wed, Nov 29, 2017 at 2:41 PM, Oleg Evseev <ev.mipt at gmail.com> wrote:
>
>> Hi all,
>>
>> I would like to push an empty object in front of objects list model of
>> ComboBox.
>> I can do this in c++:
>>
>> QList<QObject*> SomeClass::getList() {
>>     QList<QObject*> list = db.getList();
>>     list.push_front(Q_NULLPTR);
>>     return list;
>> }
>>
>> then set it as model for ComboBox:
>>
>>     model: SomeClass.getList()
>>
>> And it works, I then can check modelData for null in delegate.
>>
>> But I'm interesting if there is any way I could do it in qml, something
>> like:
>>
>>   model: [0, (or undifined), DB.getList()]
>> or
>>   model: {0, (or undifined), DB.getList()}
>>
>> or push empty object in front of list in Component.onCompleted?
>>
>> Thanks in advance for help!
>>
>> --
>> With regards, Oleg.
>>
>> _______________________________________________
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>> Interest at qt-project.org
>> http://lists.qt-project.org/mailman/listinfo/interest
>>
>>
>
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