How to exploit a json file in QT ?

[feedain]

@jsulm said in How to exploit a json file in QT ?:

@feedain You should really be more clear when asking.
"How do i instanciate a new personnage with this json file ?" - do you mean you want to create an instance of a class and initialise its properties from values you read from a JSON file? If so then please tell us what exactly is not clear:

1. How to read JSON file?
2. How to initialise an instance of a class?

I will try to be more clear. I have created my JSON template which will have two parameters: the port number and the port state.
So I have created the JSON file. But now I want to use it: let's say I want to set port 4 to state 1, how do I do that in QT? That's what I want to know, because with the debug, everything is fine, but now I want to exploit it according to the port number and the state of that port.

[jsulm]

@feedain

1. Iterate over the objects in your array using https://doc.qt.io/qt-5/qjsonarray.html#operator-5b-5d
2. For each object check the port whether it is the one you want to change (use https://doc.qt.io/qt-5/qjsonobject.html#operator-5b-5d)
3. If you found the object, then change the State in that object (obj["State"] = int(state))

[feedain]

@jsulm said in How to exploit a json file in QT ?:

@feedain

1. Iterate over the objects in your array using https://doc.qt.io/qt-5/qjsonarray.html#operator-5b-5d
2. For each object check the port whether it is the one you want to change (use https://doc.qt.io/qt-5/qjsonobject.html#operator-5b-5d)
3. If you found the object, then change the State in that object (obj["State"] = int(state))

that's my code for create the JSON file :

    QJsonObject object;
    object.insert("port", QJsonValue(p));
    object.insert("etat",QJsonValue(e));
    QJsonDocument doc(object);
    qDebug() << doc.toJson();

I don't use array, do i must use array ?

[jsulm]

@feedain said in How to exploit a json file in QT ?:

I don't use array

I'm getting tired.
Above you shown us your JSON which was composed of an array containing objects.
Could you please be so kind and explain to us how EXACTLY your JSON should look like?!
Else we all are wasting time...

[JonB]

@feedain said in How to exploit a json file in QT ?:

I don't use array, do i must use array ?

If you want a whole lot of items and you don't use an array what else are you going to use? We have said several times it sounds like you want an array. It won't happen by magic.

But please respond to @jsulm post above....

[feedain]

@jsulm said in How to exploit a json file in QT ?:

@feedain said in How to exploit a json file in QT ?:

I don't use array

I'm getting tired.
Above you shown us your JSON which was composed of an array containing objects.
Could you please be so kind and explain to us how EXACTLY your JSON should look like?!
Else we all are wasting time...

Yes indeed I used an array above, but I don't want to use it as it is removed in the code.
What I want to do is get an arduino port on QT and change its state without using array

[jsulm]

@feedain You already have this code snippet here, did you notice it?

obj["State"] = int(state);

[feedain]

@jsulm said in How to exploit a json file in QT ?:

@feedain You already have this code snippet here, did you notice it?

obj["State"] = int(state);

yes thanks