Variables and using it inside frappe.call

Frappe Framework
1

Hello;

How I can use a variable inside the frappe.call method?
For example, in the below script, I configured var rows_quantity = 0; and I need to use it inside the frappe.call, but it seems that it is not possible.

The problem now that I need to know the number of rows of the child table, and I am looping within this child table inside the frappe.call, I need to count the child table rows to know the rows quantity, how?

var hops_calculation = function(frm, cdt, cdn) {
	var item = locals[cdt][cdn];
	var rows_quantity = 0;
	frm.set_value('total_price', 0);

frappe.call({
	method: "taxi.taxi.doctype.trip_order.trip_order.get_settings",
	callback: function(r) {
		if (r.message) {
			cur_frm.set_value("discounted_hop_no", r.message[0]);
			$.each(frm.doc.items, function(i, row) {
				if (row.to_metric) {
					if (i < (r.message[0] - 1)) {
						if (flt(row.to_metric) > flt(frm.doc.origin_metric)) {
							row.selected_metric = row.to_metric;
						}
						else {
							row.selected_metric = frm.doc.origin_metric;
						}
					}
					else if (i >= (r.message[1]-1)) {
						if (flt(row.to_metric) >= flt(frm.doc.items[i-1].to_metric))
							row.selected_metric = row.to_metric;
						else
							row.selected_metric = frm.doc.items[i-1].to_metric;
					}
					else {
						if (flt(row.to_metric) > flt(frm.doc.items[i-1].to_metric))
							row.selected_metric = row.to_metric;
						else if (flt(row.to_metric) < flt(frm.doc.items[i-1].to_metric))
							row.selected_metric = frm.doc.items[i-1].to_metric;
						else
							row.selected_metric = r.message[2];
					}
					if (row.ozw == 1)
						row.hop_price = 0;
					else
						row.hop_price = flt(row.selected_metric);
					frm.set_value('total_price', frm.doc.total_price + row.hop_price);
					refresh_field("items");
					rows_quantity = this.rows_quantity + 1;
				}
			})
		}
	}
})
frappe.msgprint(__("Row #{0}", [rows_quantity]));
frm.set_value('final_destination', frm.doc.items[i-3].to);
refresh_field("items");
cur_frm.refresh();
}

Regards
Bilal

2

Move these functions after your $.each call inside the callback

3

Yes, that is correct.
But how to use the variables outside the callback function?
Regards
Bilal

4

You will have to structure your code differently. Javascript works on event based model, and not the usual top down approach you are familiar with.

You can call a function from your callback and do rest of the operations there.