Django：将所有表单错误消息作为单个字符串

我试图在视图中以文本形式访问表单错误消息，并将其作为单个字符串使用

error_string = ' '.join(form.errors['email'].as_data())

我得到这个错误：

sequence item 0: expected str instance, ValidationError found

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我该怎么办？

如果要将错误字符串列表合并在一起，请使用

form.errors['email']

error_string = ' '.join(form.errors['email'])

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您不想使用该方法，因为它返回的是

ValidationError

实例列表，而不是字符串

@bdoubleu-answer对我不起作用，因为它不会显示出错字段的名称，只显示错误消息

form.errors = {
    'username': 
        ['This name is reserved and cannot be registered.'], 
    'password2': 
        ['This password is too short. It must contain at least 8 characters.', 
        'This password is too common.']
}

error_string = ' '.join([' '.join(x for x in l) for l in list(form.errors.values())])

print(error_string)
>>> This name is reserved and cannot be registered. This password is too short. It must contain at least 8 characters. This password is too common.

error_string = ' '.join([' '.join(x for x in l) for l in list(form.errors.values())])

print(error_string)

>>> This field is required 

（仅显示错误，不显示字段） 如果同时需要字段和错误消息

target = list(form.errors) + list(form.errors.values())
error_string = ' '.join([l for l in target])

print(error_string)

>>> name This field is required