AttributeError: NoneType object does not have get attribute - Python - OpenErp

Question

I need to read the field in the object that purchase.order from another product.product object This field is a selection type field, so if this field has si , then execute _get_product_available_func(('done')) , which is already declared in product.product

This is the selection field in purchase.order

 'sel_cert' : fields.selection([('si', 'Si'),('no','No')], 'Origen Certificado'), 

And this is the function that should “extract” this field from product.product

 def desc_cert(self, cr, uid, ids, field_name, field_args, context=None): obj = self.pool.get('purchase.order') pids = obj.search(cr, uid, [('sel_cert', '=', 'si')]) val = self._get_product_available_func(('done')) if pids == 'si': return val 

Function that has _get_product_available_func(('done))

 def _get_product_available_func(states, what): def _product_available(self, cr, uid, ids, name, arg, context=None): return {}.fromkeys(ids, 0.0) return _product_available _product_qty_available = _get_product_available_func(('done',), ('in', 'out')) _product_certificado_qty = _get_product_available_func(('done',), ('in', 'out')) _product_virtual_available = _get_product_available_func(('confirmed','waiting','assigned','done'), ('in', 'out')) _product_outgoing_qty = _get_product_available_func(('confirmed','waiting','assigned'), ('out',)) _product_incoming_qty = _get_product_available_func(('confirmed','waiting','assigned'), ('in',)) 

So, I need to "execute" _get_product_available_func(('done')) in product.product , when the sel_cert field in purchase.order is si , but it gives me an error, here is the trace on the openerp server:

 Server Traceback (most recent call last): File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\openerp\addons\web\session.py", line 89, in send File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\.\openerp\netsvc.py", line 292, in dispatch_rpc File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\.\openerp\service\web_services.py", line 626, in dispatch File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\.\openerp\osv\osv.py", line 188, in execute_kw File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\.\openerp\osv\osv.py", line 131, in wrapper File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\.\openerp\osv\osv.py", line 197, in execute File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\.\openerp\osv\osv.py", line 185, in execute_cr File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\.\openerp\osv\orm.py", line 3604, in read File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\.\openerp\osv\orm.py", line 3724, in _read_flat File "C:\Program Files\OpenERP 7.0-20130726-231403\Server\server\.\openerp\osv\fields.py", line 1139, in get AttributeError: 'NoneType' object has no attribute 'get' 

Perhaps I should call _product_qty_available instead of _get_product_available_func ?

Can anyone clarify this?

Thanks in advance!

Answer 1

More ideas:

Try this one time:

 def desc_cert(self, cr, uid, ids, field_name, field_args, context=None): obj = self.pool.get('purchase.order') pids = obj.search(cr, uid, [('sel_cert', '=', 'si')]) val = self._get_product_available_func(('done')) if pids == 'si': return val return 10 

If we get AttributeError: 'int' object has no attribute 'get' , we know that the error is really in the output of this function.

Another idea:

 def desc_cert(self, cr, uid, ids, field_name, field_args, context=None): obj = self.pool.get('purchase.order') pids = obj.search(cr, uid, [('sel_cert', '=', 'si')]) val = self._get_product_available_func(('done')) if pids.lower() == 'si': return val 

Now pids can be "si" or "Si".

Answer 2

Try the following:

 def desc_cert(self, cr, uid, ids, field_name, field_args, context=None): obj = self.pool.get('purchase.order') pids = obj.search(cr, uid, [('sel_cert', '=', 'si')]) if pids == 'si': val = self._get_product_available_func(('done')) return val 

Or that:

 def desc_cert(self, cr, uid, ids, field_name, field_args, context=None): if self.pool: obj = self.pool.get('purchase.order') pids = obj.search(cr, uid, [('sel_cert', '=', 'si')]) val = self._get_product_available_func(('done')) if pids == 'si': return val