Python Flask WTForms：如何在视图中动态禁用字段？

I've been able to implement this change to create Field which is disabled in WTForms. How would I selectively disable a field in my view before rendering it?

我已经能够实现此更改以创建在WTForms中禁用的Field。在渲染之前,如何有选择地禁用视图中的字段?

3 个解决方案

#1

If you're trying to remove a field you could look at the Removing Fields Per-instance in the documentation.

如果您尝试删除字段,可以查看文档中的“每个实例删除字段”。

From the docs:

来自文档:

Sometimes, you create a form which has fields that aren’t useful in all circumstances or to all users. While it is indeed possible with form inheritance to define a form with exactly the fields you need, sometimes it is necessary to just tweak an existing form. Luckily, forms can have fields removed post-instantiation by using the del keyword:

有时,您创建的表单包含在所有情况下无用的字段或所有用户。虽然确实可以使用表单继承来定义具有所需字段的表单,但有时需要调整现有表单。幸运的是,表单可以在实例化后使用del关键字删除字段:

class MagazineIssueForm(Form):
    title  = TextField()
    year   = IntegerField('Year')
    month  = SelectField(choices=MONTHS)

def edit_issue():
    publication = get_something_from_db()
    form = MagazineIssueForm(...)

    if publication.frequency == 'annual':
        del form.month`

3 个解决方案

#1

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