如何计算OpenERP中两个日期之间的差异? [英] How to calculate the difference between two dates in OpenERP?

问题描述

在我的自定义模块中，我无法计算两个日期之间的差值.

In my custom module I am unable to calculate difference between two dates.

我的字段是

'date_s':fields.datetime('Start Date'),
'date_e':fields.datetime('End Date'),

我想在工期字段中自动计算差异:

I want to calculate the difference automatically in my duration field:

 'Duration':fields.char('Duration'),

推荐答案

这是我编写的一个简单函数.希望对您有帮助.

this is a simple function I have written. Hope it will help you.

def onchange_return_date(self, cr, uid, ids, issuedate, returndate):
 a=datetime.strptime(issuedate,"%Y-%m-%d")
 b=datetime.strptime(returndate,"%Y-%m-%d")
 timedelta = b - a
 diff=timedelta.days
 return {'value': {'days':diff}}

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