wtforms + flask今天的日期作为默认值 [英] wtforms+flask today's date as a default value

问题描述

我做了一个带有两个日期字段的小型Flask应用程序，这就是我如何填充值：

  class BoringForm（Form）：
 until = DateTimeField（Until，
 format =％Y-％m-％dT％H：％M：％S，
 default = datetime .today（），
 validators = [validators.DataRequired（）]）
  

这只在服务器端生成一次，这意味着明天我仍然会得到昨天的日期。我尝试将 obj = something 传递给构造函数，其中 something 是 OrderedDict ，自之后有一个名为的键，但是不起作用。想法？

解决方案

只要将括号放在可调用对象上即可：

<$ p
until，format =％Y-％m-％dT％H：％M：％S
until = DateTimeField ，
default = datetime.today，##现在每次调用它
validators = [validators.DataRequired（）]
）


I did a small Flask app with a form with two date fields, and this is how I populate the values:

class BoringForm(Form):
    until = DateTimeField("Until",
                          format="%Y-%m-%dT%H:%M:%S", 
                          default=datetime.today(),
                          validators=[validators.DataRequired()])

However, this is generated only once, server-side, which means that tomorrow I'll still get yesterday's date. I tried passing obj=something to the constructor, where something was an OrderedDict with a key called since, but it didn't work. Ideas?

解决方案

Just drop the brackets on the callable:

class BoringForm(Form):
    until = DateTimeField(
        "Until", format="%Y-%m-%dT%H:%M:%S",
        default=datetime.today, ## Now it will call it everytime.
        validators=[validators.DataRequired()]
    )

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