Split Mrp Production Odoo 14

[stevencodelab]

i just create a module to split the work order.

the code for action split is like this

`def action_split_workorder(self):
new_workorders = []
total_qty_to_produce = self.production_id.product_qty
for i in range(int(self.quantity_to_split)):
new_name = f"{self.production_id.name} - {i + 1:04d}"
new_workorder = self.production_id.copy(default={'name': new_name, 'qty_producing': 1})
new_workorders.append(new_workorder.id)
self.production_id.qty_producing -= self.quantity_to_split

    qty_per_workorder = total_qty_to_produce / self.quantity_to_split
    for new_workorder in self.env['mrp.production'].browse(new_workorders): 
        new_workorder.product_qty = qty_per_workorder

    return {
        'name' : 'Manufacturing Orders',
        'type': 'ir.actions.act_window',
        'res_model': 'mrp.production',
        'view_mode': 'tree,form',
        'res_id': new_workorders,
        'target': 'current',
    }`

The problem is every time I try to split a Manufacturing Order, for example I try to split WH/MO/00356 into 5 Work Orders
there will be 6 WH/MO/00356 Manufacturing Orders like in the pict.
the goals is when i splited the WH/MO/00356 i want only 1 WH/MO/00356 in the tree view so the work order is only have 1 Manufacturing Order sources.

any idea how to fix this issue/problem?
it really help, because i just started to using odoo

thankyou