Openerp - AttributeError in function of stock.picking.in

Question

Really struggling with this one:

I have inherited from stock.picking.in and have added a few columns. I then added a function field.

In the function that the function field refers to, it works if I do not use any attribute from the stock.picking.in object. The moment I use any value from the object, it starts giving 'AttributeError: ' and some attribute at random. It doesn't specify any other reasons or causes.

Code:

class stock_picking_custom(osv.osv):
_name = 'stock.picking.in'
_inherit = 'stock.picking.in'
_table = "stock_picking"

def calc_royalty(self, cr, uid, ids, field_name, arg, context=None):
    if not ids: return {}
    res = {}
    for line in self.browse(cr, uid, ids, context=context):
        res[line.id] = 0 #line.royalty_rate * line.loading_netweight

    return res   

_columns = {
            'loading_netweight': fields.float('Net weight at loading', digits=(16,2), help="Net weight at loading (interior weight)"),
            'royalty_date': fields.date('Royalty Issue date'),
            'royalty_number' : fields.char('Royalty Number', size=64),
            'royalty_rate' : fields.float('Royalty Rate (p. ton)', digits=(16,2)),
            'royalty_amount' : fields.function(calc_royalty, type='float', digits=(16,2), string='Royalty Amount', store=True, select=True)
            }
stock_picking_custom()

I have commented out the line that I want to use. The moment I put this line back in the code, it would give attribute error on royalty_date (for example) which is not even mentioned in the function.

Please guide.

EDIT: I tried the exact same code with purchase.order and it works perfectly. What is different about stock.picking.in?

Thanks

Raza Ali Raza Ali · Accepted Answer · 2013-04-16T16:32:41

Ok, found the answer in stock module in delivery addon. So this is a framework limitation issue related to inheritance order etc.

Sharing here in case someone ends up in a similar situation.

To solve, I repeated the same fields in stock.picking and stock.picking.in. Then I called the calc function of the picking class from the picking.in class.

Code:

class stock_picking_custom(osv.osv):
_name = 'stock.picking'
_inherit = 'stock.picking'

def calc_royalty(self, cr, uid, ids, field_name, arg, context=None):
    if not ids: return {}
    res = {}

    for line in self.browse(cr, uid, ids, context=context):
        res[line.id] = line.royalty_rate * line.loading_netweight

    return res   

_columns = {
            'loading_netweight': fields.float('Net weight at loading', digits=(16,2), help="Net weight at loading (interior weight)"),
            'royalty_date': fields.date('Royalty Issue date'),
            'royalty_number' : fields.char('Royalty Number', size=64),
            'royalty_rate' : fields.float('Royalty Rate (p. ton)', digits=(16,2)),
            'royalty_amount' : fields.function(calc_royalty, type='float', digits=(16,2), string='Royalty Amount', store=True, select=True)
            }

stock_picking_custom()

class stock_picking_in_custom(osv.osv):
_name = 'stock.picking.in'
_inherit = 'stock.picking.in'
_table = "stock_picking"

def calc_royalty(self, cr, uid, ids, field_name, arg, context=None):
    return self.pool.get('stock.picking').calc_royalty(cr,uid,ids,field_name,arg,context=context)

_columns = {
            'loading_netweight': fields.float('Net weight at loading', digits=(16,2), help="Net weight at loading (interior weight)"),
            'royalty_date': fields.date('Royalty Issue date'),
            'royalty_number' : fields.char('Royalty Number', size=64),
            'royalty_rate' : fields.float('Royalty Rate (p. ton)', digits=(16,2)),
            'royalty_amount' : fields.function(calc_royalty, type='float', digits=(16,2), string='Royalty Amount', store=True, select=True)
             }
 stock_picking_in_custom()

Openerp - AttributeError in function of stock.picking.in

2 Answers