日期格式化字符串:DATE_FORMAT = "%Y-%m-%d"

日期时间格式字符串:DATETIME_FORMAT = "%Y-%m-%d %H:%M:%S"

日期时间格式字符串(包含毫秒):DATETIME_FORMAT = "%Y-%m-%d %H:%M:%S.%f"

OpenERP对象中字段赋值为当前日期(字符串):fields.date.context_today,fields.date.context_today(self, cr, uid, context=context),fields.date.today()

OpenERP对象中字段赋值为当前时间(字符串):fields.datetime.now(),fields.datetime.context_timestamp(cr, uid, datetime.now(), context=context)

OpenERP官方建议 date/datetime 的默认值的写法是fields.date.context_today,fields.datetime.now()

字符串转换为日期时间:datetime.datetime.strptime(sale.date, DATE_FORMAT)

日期时间转换为字符串:datetime.datetime.strftime(datetime.date.today(), DATE_FORMAT)

python中获取当前日期:datetime.date.today()

python中获取当前时间:datetime.datetime.now()

OpenERP fields 单元中对 date/datetime 类中方法定义如下所示:

class date(_column):
_type = 'date' @staticmethod
def today(*args):
""" Returns the current date in a format fit for being a
default value to a ``date`` field. This method should be provided as is to the _defaults dict, it
should not be called.
"""
return DT.date.today().strftime(
tools.DEFAULT_SERVER_DATE_FORMAT) @staticmethod
def context_today(model, cr, uid, context=None, timestamp=None):
"""Returns the current date as seen in the client's timezone
in a format fit for date fields.
This method may be passed as value to initialize _defaults. :param Model model: model (osv) for which the date value is being
computed - automatically passed when used in
_defaults.
:param datetime timestamp: optional datetime value to use instead of
the current date and time (must be a
datetime, regular dates can't be converted
between timezones.)
:param dict context: the 'tz' key in the context should give the
name of the User/Client timezone (otherwise
UTC is used)
:rtype: str
"""
today = timestamp or DT.datetime.now()
context_today = None
if context and context.get('tz'):
tz_name = context['tz']
else:
tz_name = model.pool.get('res.users').read(cr, SUPERUSER_ID, uid, ['tz'])['tz']
if tz_name:
try:
utc = pytz.timezone('UTC')
context_tz = pytz.timezone(tz_name)
utc_today = utc.localize(today, is_dst=False) # UTC = no DST
context_today = utc_today.astimezone(context_tz)
except Exception:
_logger.debug("failed to compute context/client-specific today date, "
"using the UTC value for `today`",
exc_info=True)
return (context_today or today).strftime(tools.DEFAULT_SERVER_DATE_FORMAT) class datetime(_column):
_type = 'datetime'
@staticmethod
def now(*args):
""" Returns the current datetime in a format fit for being a
default value to a ``datetime`` field. This method should be provided as is to the _defaults dict, it
should not be called.
"""
return DT.datetime.now().strftime(
tools.DEFAULT_SERVER_DATETIME_FORMAT) @staticmethod
def context_timestamp(cr, uid, timestamp, context=None):
"""Returns the given timestamp converted to the client's timezone.
This method is *not* meant for use as a _defaults initializer,
because datetime fields are automatically converted upon
display on client side. For _defaults you :meth:`fields.datetime.now`
should be used instead. :param datetime timestamp: naive datetime value (expressed in UTC)
to be converted to the client timezone
:param dict context: the 'tz' key in the context should give the
name of the User/Client timezone (otherwise
UTC is used)
:rtype: datetime
:return: timestamp converted to timezone-aware datetime in context
timezone
"""
assert isinstance(timestamp, DT.datetime), 'Datetime instance expected'
if context and context.get('tz'):
tz_name = context['tz']
else:
registry = openerp.modules.registry.RegistryManager.get(cr.dbname)
tz_name = registry.get('res.users').read(cr, SUPERUSER_ID, uid, ['tz'])['tz']
if tz_name:
try:
utc = pytz.timezone('UTC')
context_tz = pytz.timezone(tz_name)
utc_timestamp = utc.localize(timestamp, is_dst=False) # UTC = no DST
return utc_timestamp.astimezone(context_tz)
except Exception:
_logger.debug("failed to compute context/client-specific timestamp, "
"using the UTC value",
exc_info=True)
return timestamp

应用示例代码: 

    #自动获取日期对应的月份并保存

    def _get_month(self, cr, uid, ids, field_name, arg, context=None):
        res =
{}
        if context is
None:
           
context = {}
       
DATETIME_FORMAT =
"%Y-%m-%d"
        for sale in
self.browse(cr, uid, ids,
context=context):
           
saledate = datetime.datetime.strptime(sale.date,
DATETIME_FORMAT)
           
res[sale.id] = saledate.strftime('%Y') + '-' +
saledate.strftime('%m')
       
return res
   
   
_columns={
       
'name':fields.char(u'单号', size=64, select=True, required=True,
readonly=True),
       
'date':fields.date(u'日期', select=True, required=True,
readonly=True),
       
'month':fields.function(_get_month, method=True, type='char', size=10, string =
u'月份', store=True, invisible=True),
    }

_defaults={
       
'name': lambda obj, cr, uid, context:
'/',
       
'date':fields.date.context_today,
       
#'employee_id':_employee_get,
       
'state':'draft'
    }

    #自动计算到期日期,按开卡日期加 年数*365 天

    def _get_due_date(self, cr, uid, ids, field_name,
arg, context=None):
        res =
{}
        if context is
None:
           
context = {}
        DATE_FORMAT =
"%Y-%m-%d"
        for rec in
self.browse(cr, uid, ids,
context=context):
           
category =
rec.category
           
if
category:
               
remaining_times=category.times_limit
               
if
rec.active_date:
                   
res[rec.id]=(datetime.datetime.strptime(rec.active_date, DATE_FORMAT)

datetime.timedelta(days=category.age_limit*365)).strftime(DATE_FORMAT)
               
else:
                   
res[rec.id]=(datetime.date.today()
datetime.timedelta(days=category.age_limit*365)).strftime(DATE_FORMAT)
       
return res
   
   
_columns={
       
"name":fields.char("卡号",size=64, required=True, readonly=True,
states={'0':[('readonly',False)]}),
       
"category":fields.many2one("dispatch.service_card_category","服务卡类型",
required=True, readonly=True,
states={'0':[('readonly',False)]}),
       
'age_limit':fields.related('category', 'age_limit', string=u'年限', type='float',
readonly=True,
store=True),
       
"times_limit":fields.integer(u"初始次数",
readonly=True),
       
"customer":fields.many2one("dispatch.customer","客户",required=True, select=True,
readonly=True,
states={'0':[('readonly',False)]}),
       
"remaining_times":fields.integer("剩余次数",required=True, readonly=True,
states={'0':[('readonly',False)]}),
       
"active_date":fields.date("开卡日期",required=True, readonly=True,
states={'0':[('readonly',False)]}),
       
'due_date':fields.function(_get_due_date, method=True, type='date', string =
u'到期日期', store=True),
       
'state': fields.selection([('0', u'未开卡'),('1', u'已开卡'),('2', u'已用完'),('3',
u'已过期'),('4', u'已锁定')], u'状态',required=True,
readonly=True),
        'lock_note':
fields.char(u'锁定原因', size=200, invisible=False, readonly=True,
states={'1':[('readonly',False)],
'4':[('readonly',False)]}),
    }

# TODO: can be improved using resource calendar
method
    #计算日期间隔对应的天数
    def
_get_number_of_days(self, date_from,
date_to):
        """Returns a
float equals to the timedelta between two dates given as string."""

DATETIME_FORMAT = "%Y-%m-%d
%H:%M:%S"
        from_dt =
datetime.datetime.strptime(date_from,
DATETIME_FORMAT)
        to_dt =
datetime.datetime.strptime(date_to,
DATETIME_FORMAT)
        timedelta
= to_dt - from_dt
        diff_day =
timedelta.days + float(timedelta.seconds) /
86400
        return
diff_day
   
   
#对象字段
    _columns =
{
           
'date_from': fields.datetime(u'起始日期',required=True, readonly=True,
states={'draft':[('readonly',False)]},
select=True),
           
'date_to': fields.datetime(u'结束日期', readonly=True,
states={'draft':[('readonly',False)]}),
           
'days': fields.float(u'天数', digits=(8, 2), readonly=True,
states={'draft':[('readonly',False)]}),
         
}
        
   
#更改起始日期,自动计算请假天数
    def onchange_date_from(self, cr,
uid, ids, date_to, date_from):
       
"""
        If there are no date set for
date_to, automatically set one 8 hours later
than
        the
date_from.
        Also update the
number_of_days.
       
"""
        # date_to has to be greater
than date_from
        if
(date_from and date_to) and (date_from >
date_to):
           
raise osv.except_osv(_(u'警告!'),_(u'开始日期必须小于结束日期.'))

result = {'value': {}}

# No date_to set so far:
automatically compute one 8 hours
later
        if date_from and not
date_to:
           
date_to_with_delta = datetime.datetime.strptime(date_from,
tools.DEFAULT_SERVER_DATETIME_FORMAT) +
datetime.timedelta(hours=8)
           
result['value']['date_to'] = str(date_to_with_delta)

# Compute and update the number of
days
        if (date_to and date_from)
and (date_from <=
date_to):
           
diff_day = self._get_number_of_days(date_from,
date_to)
           
result['value']['days'] =
round(math.floor(diff_day))+1
       
else:
           
result['value']['days'] = 0

return
result
   
   
#更改结束日期,自动计算请假天数
    def onchange_date_to(self, cr,
uid, ids, date_to, date_from):
       
"""
        Update the
number_of_days.
       
"""
        # date_to has to be greater
than date_from
        if (date_from and
date_to) and (date_from >
date_to):
           
raise osv.except_osv(_(u'警告!'),_(u'开始日期必须小于结束日期.'))

result = {'value': {}}

# Compute and update the number of
days
        if (date_to and date_from)
and (date_from <=
date_to):
           
diff_day = self._get_number_of_days(date_from,
date_to)
           
result['value']['days'] =
round(math.floor(diff_day))+1
       
else:
           
result['value']['days'] = 0

return result

openerp学习笔记 日期时间相关操作的更多相关文章

  1. odoo开发笔记-日期时间相关操作

    日期格式化字符串:DATE_FORMAT = "%Y-%m-%d" 日期时间格式字符串:DATETIME_FORMAT = "%Y-%m-%d %H:%M:%S" ...

  2. java学习笔记07--日期操作类

    java学习笔记07--日期操作类   一.Date类 在java.util包中定义了Date类,Date类本身使用非常简单,直接输出其实例化对象即可. public class T { public ...

  3. IOS学习笔记25—HTTP操作之ASIHTTPRequest

    IOS学习笔记25—HTTP操作之ASIHTTPRequest 分类: iOS2012-08-12 10:04 7734人阅读 评论(3) 收藏 举报 iosios5网络wrapper框架新浪微博 A ...

  4. jQuery学习笔记之DOM操作、事件绑定(2)

    jQuery学习笔记之DOM操作.事件绑定(2) --------------------学习目录------------------------ 4.DOM操作 5.事件绑定 源码地址: https ...

  5. tensorflow学习笔记——使用TensorFlow操作MNIST数据(2)

    tensorflow学习笔记——使用TensorFlow操作MNIST数据(1) 一:神经网络知识点整理 1.1,多层:使用多层权重,例如多层全连接方式 以下定义了三个隐藏层的全连接方式的神经网络样例 ...

  6. tensorflow学习笔记——使用TensorFlow操作MNIST数据(1)

    续集请点击我:tensorflow学习笔记——使用TensorFlow操作MNIST数据(2) 本节开始学习使用tensorflow教程,当然从最简单的MNIST开始.这怎么说呢,就好比编程入门有He ...

  7. ROS学习笔记INF-重要操作列表

    该笔记将重要操作的步骤进行列表,以便查询: 添加消息 在包中的msg文件夹中创建msg文件 确保package.xml中的如下代码段被启用: <build_depend>message_g ...

  8. openerp学习笔记 搜索视图(自己创建的、自己的、本部门的、本部门及下属部门的、今日的、日期从,日期至、多条件模糊搜索、or、and)

    自己创建的: domain="[('create_uid','=',uid)]" 自己的: domain="[('employee_id','=','#kl_user_e ...

  9. Symfony2学习笔记之数据库操作

    数据库和Doctrine让我们来面对这个对于任何应用程序来说最为普遍最具挑战性的任务,从数据库中读取和持久化数据信息.幸运的是,Symfony和Doctrine进行了集成,Doctrine类库全部目标 ...

随机推荐

  1. sql server锁检测

    有时候系统运行老感觉效率不高,并且有时候sql还有超时的报错,但是并发量并不高.通过排查定位sql是否有执行效率问题 -- 开事务, 以保持锁 BEGIN TRAN -- 更新 update tabl ...

  2. delphi edit边框成为下划线

    设置它的几个属性:BevelEdges    |_ beLeft = False;    |_ beTop   = False;    |_ beRight = False;    |_ beBott ...

  3. Arduino I2C + 温湿度传感器AM2321

    (2015.5.17:本日志的内容有所更新,参见<使用Arduino Wire Library读取温湿度传感器AM2321>.) AM2321是广州奥松电子生产的数字式温湿度传感器.虽是国 ...

  4. WEB应用从服务器主动推送的方法

    1.短轮询 2.长轮询 3.iframe 4.sse 5.Web Scoket

  5. jsonp的使用记录

    最近前端的同事说要写一个手机查看的html5页面,需要我提供数据. 这个很ok啊,立马写了个服务返回数据.但是对方调用不了,因为跨域了. 返回错误如下:  Failed to load xxxxxx: ...

  6. Javascript获取select的选中值和选中文本(转载)

    var obj = document.getElementById(”select_id”); //selectid var index = obj.selectedIndex; // 选中索引 va ...

  7. linux命令之网络管理命令(下)

    1.wget:命令行下载工具 该命令用于从网络上下载资料,可以直接从网络上下载自己所需要的资料. 参数 说明 -O(常用) 指定保存的文件名后下载文件 --limit-rate(常用) 限速下载 -c ...

  8. “全栈2019”Java第十章:关键字

    难度 初级 学习时间 10分钟 适合人群 零基础 开发语言 Java 开发环境 JDK v11 IntelliJ IDEA v2018.3 文章原文链接 "全栈2019"Java第 ...

  9. 使用concat做字符串拼接和数据迁移

    作用: 解决一开始数据库建立不合理造成的字段冗余,从而提取部分字段,数据迁移.拼接字符串的功能. 格式: concat(字段1,'间隔符',字段2....) concat_ws('间隔符',字段1,字 ...

  10. ubuntu和centos 编译安装nginx及常用命令

    转自http://www.cnblogs.com/piscesLoveCc/p/5794926.html 一. ubuntu安装 1. 安装依赖库 安装gcc g++的依赖库 ubuntu平台可以使用 ...