第一步：引用日期处理方法：
from datetime import datetime from dateutil.relativedelta import relativedelta
第二步：添加onchange方法：
@api.onchange("workDate") def _onchange_work_date(self): for rec in self: if rec.workDate: rec.workAge = relativedelta(dt1=datetime.today(), dt2=rec.workDate).years + 1
注：多字段时onchange中逗号分隔即可，如 ：
@api.onchange("columnName1"，"columnName2", "columnName3", ...) def _onchange_work_date(self): for rec in self: if rec.workDate: rec.workAge = relativedelta(dt1=datetime.today(), dt2=rec.workDate).years + 1
如果需要提示信息，如：
@api.onchange("workDate") def _onchange_work_date(self): for rec in self: if rec.workDate: rec.workAge = relativedelta(dt1=datetime.today(), dt2=rec.workDate).years + 1 return { 'warning':{ 'title': u'错误信息标题', 'message': u'错误详情' } }