Hello Zakaria benomar,

There are two options for entering sale.order.line while creating sale.order

@api.model

def create(self, vals):

data_list = [{"default_code":"8630ER","name":"product_1","qte":1,"list_price":0},

{"default_code":"7630ER","name":"product_2","qte":1,"list_price":0}]

sale_order = super(SaleOrder, self).create(vals)

for data in data_list:

product_id = self.env['product.product'].search([('default_code', '=', data['default_code'])])

if product_id:

self.env['sale.order.line'].create({

'product_id': product_id.id,

'order_id': sale_order.id,

'name': data['name'] or product_id.name,

'product_uom_qty': data['qte'] or 1,

'price_unit': data['list_price'] or product_id.lst_price,

})

return sale_order

2) By xls or csv file.

There are many free and paid modules available on the Odoo Apps store.

By using such modules one can enter the required data in the excel sheet and can import the same file.

Using such modules one can easily import number of sale orders and it's sale order line.

Eg. https://www.odoo.com/apps/modules/10.0/import_purchase_sale_order_xls/