[英]Custom choices in WTForms SelectField bsed on current date
I would like to create a custom SelectField
that provides different choices in based on the current date. 我想创建一个自定义的
SelectField
,它根据当前日期提供不同的选择。 For example, if it is the 13th of the month, the choices will be the values 1 through 13. How do I do this? 例如,如果是每月的13号,则选择的值将是1到13。我该如何做?
def register_extensions(app):
security.init_app(app, datastore=ds, register_form=forms.ExtendedRegisterForm)
class ExtendedRegisterForm(RegisterForm):
pay_month = SelectField(choices=[('need', 'custom'), ('day', 'choices')])
Override the form's __init__
method and populate the field's choices
with the range of values from 1 to the current day. 覆盖表单的
__init__
方法,并使用从1到当天的值范围填充字段的choices
。
from datetime import datetime
class ExtendedRegisterForm(RegisterForm):
pay_month = SelectField()
def __init__(self, *args, **kwargs):
super(ExtendedRegsiterForm, self).__init__(*args, **kwargs)
now = datetime.utcnow()
self.pay_month.choices = [(i, i) for i in range(1, now.day + 1)]
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