如何使Django表单字段只包含字母数字字符 [英] How can I make a Django form field contain only alphanumeric characters

问题描述

我有这个模型

name = models.CharField(max_length=50, blank=True, null=True)
email = models.EmailField(max_length=50, unique=True)

用户不应该在两个字段中都不能使用字母数字的任何其他字符。

I want that the user should not be able to use any other characters than alphanumerics in both fields.

有没有办法？

推荐答案

您将使用验证器以限制现场接受的内容。 RegexValidator 会在这里做的诀窍：

You would use a validator to limit what the field accepts. A RegexValidator would do the trick here:

alphanumeric = RegexValidator(r'^[0-9a-zA-Z]*$', 'Only alphanumeric characters are allowed.')

name = models.CharField(max_length=50, blank=True, null=True, validators=[alphanumeric])
email = models.EmailField(max_length=50, unique=True, validators=[alphanumeric])

请注意， validate_email 验证器将验证您的电子邮件地址; 字母数字验证器将不允许有效的电子邮件地址。

Note that there already is a validate_email validator that'll validate email addresses for you; the alphanumeric validator above will not allow for valid email addresses.

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