form.kv

#:kivy 1.10.1
#:import app app
<LblTxt@BoxLayout>:
    orientation: 'horizontal'      
    lblTxtIn: 'default'
    theTxt: iAmTxt
    Label:
        text: root.lblTxtIn
    TextInput:
        id: iAmTxt

<LblNum@BoxLayout>:
    orientation: 'horizontal'      
    lblTxtIn: 'default'
    theTxt: iAmTxt
    Label:
        text: root.lblTxtIn
    TextInput:
        id: iAmTxt
        text: '1'

<MyLayout@BoxLayout>:  
    orientation: 'vertical'

    LblTxt:   
        id: question_id
        lblTxtIn: 'question_id'

    LblTxt:   
        id: user
        lblTxtIn: 'user'

    LblTxt:   
        id: crush
        lblTxtIn: 'crush'

    LblNum:   
        id: request_num
        lblTxtIn: 'request_num'

    Button:
        text: 'Send with Random crush name'
        on_release: 
            app.sendRandom(question_id.theTxt.text, user.theTxt.text, int(request_num.theTxt.text))

    Button:
        text: 'Send'
        on_release: 
            app.send(question_id.theTxt.text, user.theTxt.text, crush.theTxt.text, int(request_num.theTxt.text))

MyLayout