使用jQuery-Ajax进行表单验证 [英] Form validation using jQuery-Ajax

问题描述

说到正常的POST，GET方法，我通常会知道我的方式。

When it comes to normal POST, GET methods, I usually know my way around.

然而，在我的代码中实现ajax-jQuery进行表单验证是我学习的巨大一步。

However, implementing ajax-jQuery into my code to make form validation is proving a huge step for me to learn.

我有一个表单，有3个字段：
电子邮件，确认电子邮件和密码。

I have a form that has 3 fields: email, confirm email, and password.

我正在使用此表单注册新用户。

I am using this form to register a new user.

form.py

class UserField(forms.EmailField):
    def clean(self, value):
        super(UserField, self).clean(value)
        try:
            User.objects.get(username=value)
            raise forms.ValidationError("email already taken.")
        except User.DoesNotExist:
            return value

class RegistrationForm(forms.Form):

    email = UserField(max_length=30, required = True)
    conf_email = UserField(label="Confirm Email", max_length=30, required = True)
    password = forms.CharField(label="Enter New Password", widget=forms.PasswordInput(), required=True)

    def clean(self):
        if 'email' in self.cleaned_data and 'conf_email' in self.cleaned_data:
            if self.cleaned_data['email'] != self.cleaned_data['conf_email']:
                self._errors['email'] = [u'']
                self._errors['conf_email'] = [u'Email must match.']
        return self.cleaned_data

Html代码

<form method="post">
    {{ register_form.as_p() }}
    <input name = "Register" type="submit" value="Register" />
</form>

我想要的是，在我按提交按钮之前，检查表单是否有效并使用ajax-jQuery方法显示任何相关的错误消息。但是，我不知道如何开始/执行此操作。

I would like that, before I press the submit button, to check if the form is valid and display any relevant error messages, by using ajax-jQuery methods. However, I have no idea how to start / do this.

推荐答案

您可能需要查看 http://github.com/alex/django-ajax-validation

有一些文档这里和这里

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