Fetch works when inserted manually but if set.value it wont fetch

Frappe Framework Customization
1

Fetch only works when inserting it manually in the field.

Here’s the sample of the data value being set upon “save/request” (it does not fetch)

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image1353×668 27.7 KB

Here’s the sample of the data being manually inserted (it fetched the datas)

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image1352×656 40.4 KB

Custom Script:

frappe.ui.form.on(“Material Request”, “validate”, function(frm,cdt,cdn){

frm.add_fetch(“preparer_user”, “signature”, “preparer_signature”);
frm.add_fetch(“noter_user”, “signature”, “noter_signature”);
frm.add_fetch(“approver_user”, “signature”, “approver_signature”);

frm.add_fetch(“preparer_user”, “signatory”, “prepared_by”);
frm.add_fetch(“noter_user”, “signatory”, “noted_by”);
frm.add_fetch(“approver_user”, “signatory”, “approved_by”);
});

frappe.ui.form.on(“Material Request”, “validate”, function(frm) {
if (frm.doc.workflow_state == “Pending Request”)
{
frm.set_value(“preparer_user”, frm.doc.owner);
}

else if (frm.doc.workflow_state == “Pending Approval”)
{
frm.set_value(“noter_user”, frm.doc.modified_by);
}

else if (frm.doc.workflow_state == “Approved”)
{
frm.set_value(“approver_user”, frm.doc.modified_by);
}
});