Collection of some Frappe framework custom script

quotation_rate_based_on_BOM.js

frappe.ui.form.on('Quotation Item', {
    item_code(frm, cdt, cdn) {
        let row = frappe.get_doc(cdt, cdn);
        frappe.call({
            type: "GET",
            method: "erpnext.stock.get_item_details.get_default_bom",
            args: {
                "item_code": row.item_code
            },
            callback: function(r) {
                if(r) {
                    setTimeout(function() {
                        set_item_price_from_bom(frm, cdt, cdn, r.message);
                    }, 500)
                }
            }
        })
    }
})

let set_item_price_from_bom = function(frm, cdt, cdn, bom) {
    frappe.db.get_value("BOM", {name:bom}, 'total_cost')
        .then((data) => {
        frappe.model.set_value(cdt, cdn,'rate',data.message.total_cost)
    })
}

Supplier_UID.js

// Here, Supplier DocType Contains a custom field (readonly) Called "UID".
// This feild is auto populated with the next number based on the highest UID in the supplier table.

frappe.ui.form.on("Supplier", {
    validate:  function(frm) {
        if(frm.doc.__islocal == '1'){
            frappe.db.get_list("Supplier", {fields:'uid', order_by:"uid desc",limit:1}).then((data) => {
                frm.set_value("uid",String(parseInt(data[0].uid)+1).padStart(5,'0'));
            });
        }
        }
});

v10_TDS_on_Purchase_Invoice.js

frappe.ui.form.on('Purchase Taxes and Charges', 'account_head', function(frm, cdt, cdn){
    if (locals[cdt][cdn].account_head.indexOf("TDS Deduct") != -1){
        frappe.run_serially([
            () => frappe.model.set_value(cdt, cdn,'charge_type',"On Net Total"),
            () => frappe.model.set_value(cdt, cdn,'category',"Total"),
            () => frappe.model.set_value(cdt, cdn,'add_deduct_tax',"Deduct"),
            () =>  setTimeout(function() {
            frappe.model.set_value(cdt, cdn,'rate',frm.doc.tds_percent)
            }, 500)
          ]);
    }
});