python-SubmitField是否需要验证器？

我是WTForms的新手.我有一个带有提交按钮的用户注册表格：

submit = SubmitField('Submit')

我要确保通过提交按钮而不是其他方式提交表单.在docs中指出

class wtforms.fields.SubmitField(default field arguments)
Represents an <input type="submit">. This allows checking if a given submit button has been pressed.

这就提出了一个问题：就我而言,我是否需要添加“必需”验证器？

例如,是否需要：

submit = SubmitField('Submit', [validators.Required()])

解决方法:

我想你是.查看源代码,没有什么是需要SubmitField的.

SubmitField实际上只是一个BooleanField：

class SubmitField(BooleanField):
    """
    Represents an ``<input type="submit">``.  This allows checking if a given
    submit button has been pressed.
    """
    widget = widgets.SubmitInput()

关联的窗口小部件只是具有类型=“ submit”的输入窗口小部件.它似乎还使用SubmitField的标签作为HTML中的文本.

class SubmitInput(Input):
    """
    Renders a submit button.

    The field's label is used as the text of the submit button instead of the
    data on the field.
    """
    input_type = 'submit'

    def __call__(self, field, **kwargs): 
        kwargs.setdefault('value', field.label.text)
        return super(SubmitInput, self).__call__(field, **kwargs)

它似乎并没有做更多的事情.

标签：wtforms,python
来源： https://codeday.me/bug/20191031/1978276.html