Hi

New API example is:

                order_object = self.env['sales.order']

                order_object_ids = order_object.search(['condition'])

                if order_object_ids:

                     for obj in order_object_ids:

                          order_line = order_object.browse(obj.id)

Hi, If you want to get all the purchase order lines related to a purchase order and you have the purchase order id then

po_pool = self.pool.get('purchcase.order')
for po_obj in po_pool.browse(cr, uid, ids,context):
    print 'purchase order>>>>',po_obj.name
    for po_line in po_obj.order_line:#order_line is the field name of purchase order line model in purchase order model
        print 'purchase order line :::',po_line.name

Hi,

For example display name for all lines :

purchase_line_obj = self.pool.get('purchase.order.line')
purchase_line_ids = purchase_line_obj.search(cr, uid, [('id','>',0)])
for purchase_line in purchase_line_ids :
    line=purchase_line_obj.browse(cr, uid,  purchase_line,context=context)
    print line.name

Thanks.