Validators in QML

Shubham Gupta

@dheerendram
I have one text box on which i want to store two things on certain conditions:

Time (mm:ss)
Integer values.

So i need to apply validators for this. So how to achieve two validators in one text box.

    TextField{
            id:text_area
            font.pixelSize:fontSize
            text:btn_text
            color:btn_text_color
            anchors.centerIn: parent
            width:root.width*0.9
            height:root.height
            horizontalAlignment: Text.AlignHCenter
            verticalAlignment: Text.AlignVCenter
            inputMethodHints: Qt.ImhDigitsOnly
            validator: DoubleValidator{
                top: top_value
              bottom:bottom_value
            }

}

dheerendra

You can use conditional operator and define the validators with ids.

e.g
IntValidator {id:three;bottom: 11; top: 31;}
IntValidator {id:four;bottom: 40; top: 50;}
property int val:1

validator:val===0?three:four

Shubham Gupta

I used conditional operator like this:

validator: val===0?RegExpValidator:DoubleValidator

But it is showing an error.

dheerendra

show me what are these RegExpValidator:DoubleValidator ?

J.Hilk

@Shubham-Gupta
~~you'll have to read up on the Conditional Operator~~

~~It reqiuers 2 expression after the ? your examply only has 1~~

forget everything, it's to damn early in the morning.

Shubham Gupta

What?
I din get your words.

dheerendra

Please paste your code here. You need to use ternary operator. You may be doing in some mistake. Hence requested paste the code.

Shubham Gupta

@dheerendra

validator: val===0?DoubleValidator{
                top: top_value
                bottom:bottom_value}
             : RegExpValidator{regExp: ""}

I am trying to make regular exp for accepting time(mm:ss).
But its showing an error.

dheerendra

what is the error ?

Shubham Gupta

@dheerendra

Hi dheerendra
In qml there are three validators

IntValidator
DoubleValidator
RegExpValidator

If i want to store text like 2:30 (mm:ss). So which validator will work.
If RegExpValidor is used, so what will be the regular expression for this syntax (mm:ss).

dheerendra

Use RegExpValidator. Did you check the google for regular expression for mm:ss ? It should help.

Shubham Gupta

@dheerendra

solved.
thanks

dheerendra

Good. Move the case to "Solved" state. It helps others as well.