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django - 在 Django 中验证电子邮件的 ArrayField 的每个值

问题描述

我正在将 PostgreSQL 与 Django 一起使用，并且正在尝试使用ArrayField(models.EmailField(max_length=200)). 但是我最终得到了一个500 error code(TypeError)无效的电子邮件地址。

如何验证 ArrayField 中的每封电子邮件。我尝试在序列化程序和模型中编写验证方法。但没有任何帮助。验证 ArrayFields 的正确方法是什么？我正在使用 Django 2.1 和 Python 3.6

错误的回溯如下...请看一下

模型.py

billing_emails = ArrayField(models.EmailField(max_length=200))

公司 = models.OneToOneField（公司，on_delete=models.CASCADE）

追溯

Traceback (most recent call last):
  File "/home/user/.local/share/virtualenvs/backend-Amy45Zrz/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/home/user/.local/share/virtualenvs/backend-Amy45Zrz/lib/python3.6/site-packages/django/core/handlers/base.py", line 156, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/user/.local/share/virtualenvs/backend-Amy45Zrz/lib/python3.6/site-packages/django/core/handlers/base.py", line 154, in _get_response
    response = response.render()
  File "/home/user/.local/share/virtualenvs/backend-Amy45Zrz/lib/python3.6/site-packages/django/template/response.py", line 106, in render
    self.content = self.rendered_content
  File "/home/user/.local/share/virtualenvs/backend-Amy45Zrz/lib/python3.6/site-packages/rest_framework/response.py", line 72, in rendered_content
    ret = renderer.render(self.data, accepted_media_type, context)
  File "/home/user/.local/share/virtualenvs/backend-Amy45Zrz/lib/python3.6/site-packages/djangorestframework_camel_case/render.py", line 8, in render
    return super(CamelCaseJSONRenderer, self).render(camelize(data), *args,
  File "/home/user/.local/share/virtualenvs/backend-Amy45Zrz/lib/python3.6/site-packages/djangorestframework_camel_case/util.py", line 17, in camelize
    new_dict[new_key] = camelize(value)
  File "/home/user/.local/share/virtualenvs/backend-Amy45Zrz/lib/python3.6/site-packages/djangorestframework_camel_case/util.py", line 16, in camelize
    new_key = re.sub(r"[a-z]_[a-z]", underscoreToCamel, key)
  File "/home/user/.local/share/virtualenvs/backend-Amy45Zrz/lib/python3.6/re.py", line 191, in sub
    return _compile(pattern, flags).sub(repl, string, count)
TypeError: expected string or bytes-like object

提前致谢。

标签： djangopostgresqlvalidationdjango-models

解决方案

如果您使用的是 Forms，请使用Form或Serializer，您可以使用该clean_<attribute_name>方法来验证数据。例如：

from django.core.validators import email_re
from django.core.exceptions import ValidationError

class YourForm(forms.ModelForm):  # serializers.ModelSerializer

    def clean_billing_emails(self): 
         data = self.cleaned_data['billing_emails']
         for email in data:
             if not email_re.match(email):
                 raise ValidationError('Invalid email {}'.format(email)  # or raise serializers.ValidationError
         return data

您也可以使用 模型的 clean 方法。

class YourModel(models.Model):
    ...
    def clean(self):
         try:
              for email in self.billing_emails:
                  if not email_re.match(email):
                       raise ValidationError('Invalid email {}'.format(email) 
         except (TypeError, Exception)  as e:
              # log error
              # handle error

    def save(self, *args, **kwargs):
        self.full_clean()
        return super(YourModel, self).save(*args, **kwargs)

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