function类型的字段，怎么在试图做筛选条件啊？？？？？？？？？？？

[winbo]

def _get_stock_qty(self, cr, uid, ids, field_names=None, arg=False, context=None):
res = {}
print ids
if len(ids) == 0:
return res
if context and context.has_key('location'):
for id in ids:
cr.execute(
'''select stock_qty get_stock_qty from starmerx_inventory where location_id=%s and type='shelf' and product_id=%s''',
(context.get('location'), id,))
result = cr.dictfetchall()
if result:
res[id] = result[0]['get_stock_qty']
else:
print id
res[id] = 0
return res

字段的定义：不保存在数据库
_columns = {
'get_newstock_qty': fields.function(_get_stock_qty, string=u"库存数量", type='integer'),
}

我现在想搜索库存大于0的。在xml
《filter string="库存大于0" domain="[('get_newstock_qty', '>', '0')]"/》
不起作用。何解？

[Felix_Cheng]

@winbo
def _get_stock_qty:
<b><font size='2'>此处是你的代码.....</font></b><br/>
<b>#猜测你的代码应该是在product对象上，所以搜索stock_qty大于0的product_id，返回标准domain三元组： [('xxx', 'operator', 'yyy')], 其中 xxx: id, yyy: Search value. </b>
def <b>_search_positive_stock</b>(self, cr, uid, ids, field_names, args, context=None):
     if context and context.has_key('location'):
         cr.execute(
        '''select product_id from starmerx_inventory st_inv where location_id=%s and type='shelf' and product_id in %s where st_inv.stock_qty>0''', (context.get('location'), ids,))
         res = cr.fetchall()
         if res:
             return [('id', 'in', [x[0] for x in res])]
    return [('id', '=', 0)]
<font color='red' size=1>@以上代码尚未经过调试，写的只是思路.</font>
<b>#fnct_search：加上此属性来允许搜索get_newstock_qty函数字段</b>
_columns = {
'get_newstock_qty': fields.function(_get_stock_qty, string=u"库存数量", type='integer', <b>fnct_search=_search_positive_stock</b>),
}

<b>xml: </b> <filter string="库存大于0" domain="[('get_newstock_qty', '>', 0)]"/>

[winbo]

@Felix_Cheng 非常感谢 您能抽取宝贵时间来回答，有这个思路我就知道了。太感谢了！！