使用 Flask-WTF 时从字典填充 WTForms 表单

Question

我有一个需要从字典中填充的 Flask-WTF 表单，我将其作为 **kwargs 传入。该表单在使用 POST 方法访问的 Flask 路由中使用。表单未通过验证，字段值为 None。如何将数据字典传递到我的表单然后对其进行验证？

@app.route('/submit', methods=['POST'])
def submit():
    data = {'name': 'eee'}
    form = MyForm(**data)
    print(form.validate())  # False, name is required
    print(form.name.data)  # None

Answer 1

您必须为构造函数使用 data 参数。您还可以查看 documentation

  form = MyForm(data=data)

Answer 2

Flask-WTF automatically passes request.form when the route is posted to, if no data is passed explicitly. You need to pass your data, as a MultiDict, to prevent the automatic behavior. Passing obj, data, or **kwargs, only sets the defaults, which are only used 如果没有向表单传递真实数据。

form = MyForm(MultiDict(data))

使用 Flask-WTF 时从字典填充 WTForms 表单

Populate WTForms form from dictionary when using Flask-WTF

python

flask

wtforms

flask-wtforms