Fetch field value in child table from linked doctype - jigneshpshah/greycube_helpmanual GitHub Wiki
Example to fetch value in a child table field from master doctype
Sample Script to fetch expiry_date field from Batch doctype to Sales Invoice Item table
Step 1: Create Custom Script for Sales Invoice (parent) doctype
Step 2: Script as below & Save
frappe.ui.form.on("Sales Invoice Item", "batch_no", function(frm, cdt, cdn) {
var d = locals[cdt][cdn];
`frappe.db.get_value("Batch", {"name": d.batch_no}, "expiry_date", function(value) {`
`d.expiry_date = value.expiry_date;`
`});`
});