Vfrdtyky

My app wants to make a list from the strings typed in the TextInput field and show them in the gridlayout in the middle of the window after pressing the button "Buscar". I'm sharing variables and functions between classes but when i try to add a new button with the TextInput.text inside the gridlayout shows the error message:

"AttributeError: 'kivy.properties.ObjectProperty' object has no attribute 'add_widget'" 

Thank you

The interface looks like this

This is my .py file

from kivy.app import App

from kivy.uix.button import Button

from kivy.properties import ObjectProperty, NumericProperty, StringProperty

from kivy.uix.floatlayout import FloatLayout

from kivy.uix.scrollview import ScrollView



class Lista(ScrollView):

    lista_repuestos = ObjectProperty()



class CustomWidget(FloatLayout):

    campo_de_busqueda_text_input = ObjectProperty()

    repuesto = StringProperty('')



    def submit_repuesto(self):

        self.repuesto = self.campo_de_busqueda_text_input.text

        Lista.lista_repuestos.add_widget(Button(text=self.repuesto))





class CustomWidgetApp(App):

    def build(self):

        return CustomWidget()



if __name__ == "__main__":

    CustomWidgetApp().run()

this is my .kv file

CustomWidget:



<CustomWidget>:



    campo_de_busqueda_text_input: campodebusqueda



    TextInput:

        id: campodebusqueda

        size_hint: .7, .1

        pos_hint: {"x": .15, "y": .85}



    Button:

        on_release: root.submit_repuesto()

        size_hint: .1, .1

        pos_hint: {"x": .85, "y": .85}

        text: "Buscar"



    Label:

        size_hint: .15, .05

        pos_hint: {"x": .05, "y": .15}

        text: "Descripción"

        text_size: self.size

        halign: "left"

    Label:

        size_hint: .15, .05

        pos_hint: {"x": .05, "y": .10}

        text: "Referencia"

        text_size: self.size

        halign: "left"

    Label:

        size_hint: .15, .05

        pos_hint: {"x": .05, "y": .05}

        text: "Cantidad"

        text_size: self.size

        halign: "left"





<Lista>:



    lista_repuestos: listarepuestos



    GridLayout:



        id: listarepuestos

        size_hint: .7, .6

        pos_hint: {"x": .15, "y": .25}

        cols: 1

        row_default_height: 50

        row_force_default: True

        padding: 5

        height: self.minimum_height

        size_hint_y: None

Your line in the CustomWidget:

Lista.lista_repuestos.add_widget(Button(text=self.repuesto))

should reference an instance of Lista, not the class itself.