Onchange We Can Create Lines

    In version 7.0 we cant create lines at the time of onchange,because we cant take the current form id,but 8.0 we can call it as self.id

    @api.multi

    def onchange_task_id(self, task_id):

        result = {}

        k =[]

        if task_id:

            obj =  self.env['project.task'].browse(task_id)

            for material in obj.lease_facilities_lines:

         

                vals = {

                        'order_id':self.id,

                        'product_id':material.product_id.id,

                        'name':material.product_id.name,

                        'price_unit':material.unit_price * material.hours,

                        'product_uom_qty':material.qty,

                        'od_date_from':material.from_date,

                        'od_date_to':material.to_date,

                        'product_uom':material.product_id.uom_id and material.product_id.uom_id.id,

                        'state': 'draft',

                        'od_month':material.hours

                }

                k.append(vals)