Need to copy child table value into parent table

Frappe Framework Customization
1

Hi,

I need to copy item_code which is in child table to Parent table. I tried to get value and set it but its not working,

frappe.ui.form.on(‘Quotation’, {
item_code: function(frm) {
var item = frappe.model.get_value(“Quotation Item”,frm.name,“item_code”);
frm.set_value(“item_code”,item);
}
});

Thanks in advance!

2

Please explain in details on which parent table you want to copy item_code ?

3

Parent table is Quotation and child table is Quotation item

4

But we can have multiple items in child table, how can you store those in single field on Quotation.
Can you please tell me the exact use case.

5

We are giving only one item as default, my query is can we copy child table field in parent table. I have custom fields like vehicle model,vehicle colour in item…i need to fetch that values in quotation…but since the item code is in child table frm.add_fetch is not working, so i gave that item code field in parent…but i need the value to be copied from child table item code.