AttributeError：'NoneType'對象沒有屬性'get' - Python - OpenErp

Question

我需要在一個對象中，這是讀取字段purchase.order ，從另一個對象product.product該字段是一個選擇類型字段，因此，如果該字段已經si選擇然后做_get_product_available_func(('done'))其是已在product.product聲明的函數

這是purchase.order的選擇字段

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

這個函數應該從product.product “檢索”該字段

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

具有_get_product_available_func(('done))的函數

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',))

所以，我需要“執行” _get_product_available_func(('done'))在product.product當現場sel_cert在purchase.order的值為si ，但給我的錯誤，這里是在OpenERP的服務器回溯：

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'

也許我應該叫_product_qty_available而不是_get_product_available_func ？

有人可以澄清一下嗎？

提前致謝！

Answer 1

試試這個：

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

或這個：

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

Answer 2

更多想法：

試試一次：

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

如果我們得到一個AttributeError: 'int' object has no attribute 'get' ，我們知道故障確實在這個函數的輸出中。

另一個想法：

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

現在pid可以是“si”或“Si”。