i want to set batch_id ..it is under course_id.

for ex:

<group colspan="4" col="4">
    <field name="student_id"/>
    <field name="course_id" options="{'no_open': True, 'no_create': True}"/>
    <field name="batch_id" domain="[('course_id', '=', course_id)]"/>
    <field name="min_unit_load"/>
    <field name="max_unit_load"/>
</group>

how to display it in website form view odoo 12
please help me to solve this.