Get child table list of Majors in the same Doctype Record to Like with Study Plan

Frappe Framework Customization
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1

Hi,

I’ve university “Program” that has “Majors” that is child table (majors_list - in DocType field) after that I’m creating “Study Plan” child table (study_plan - in DocType Field) I’ve a major field in study plan that I want to list from Majors above. Problem is when I link to Majors It list all of them without fliter which in the same Program.

This is custom script I’m using

frappe.ui.form.on("Majors", "majors", function(frm, cdt, cdn){
  var child = locals[cdt][cdt], 
       grid_row = cur_frm.fields_dict['study_plan'].grid.grid_rows_by_docname[child.name],
      field = frappe.utils.filter_dict(grid_row.docfields, {fieldname: "major_abbre"})[0];

  field.get_query =  function(){
    return {
      filters: { parent: child.major}
    }
  }
  grid_row.refresh_field("major");
});

Can anyone told me what’s wrong with this script?