django 表单字段验证和错误显示

Question

我想制作一个注册页面，就像：

当用户点击注册时，我想检查两个密码是否相同，如果不相同，在"confirm password"后给出错误信息。这是我的代码：

forms.py

class SignupForm(forms.Form):
    username = forms.CahrField(
        label=_("username"),
        max_length=30,
    )

    email = forms.EmailField(label=_('email'),)
    password_1 = forms.CharField(
        label=_("password"),
        widget=forms.PasswordInput,
    )
    password_2 = forms.CharField(
        label=_("password_confirmed"),
        widget=forms.PasswordInput,
    )

    def clean_password_2(self):
        password_1 = self.cleaned_data.get("password_1")
        password_2 = self.cleaned_data.get("password_2")
        if password_1 and password_2 and password_1 != password_2:
            raise forms.ValidationError(_('password confirm failed'))
        return password_2

signup.html

<form method="post" action="{% url 'accounts:signup_post' %}">
    {% csrf_token %}
    <table>
    {% for field in form %}
        <tr>
            <td>{{ field.label_tag }}</td>
            <td>{{ field }}</td>
            <td>{{ field.errors }}</td>
        </tr>
    {% endfor %}
    </table>

    <input type='submit' id="submit" value={% trans "signup" %}>
    <a href="{% url 'accounts:login' %}">{% trans "Already have accounts?" %}</a>
</form>

views.py

def signup_post(request):
    if request.method == 'POST':
        signup_form = forms.SignupForm(request.POST)

        if signup_form.is_valid():
            signup_info = signup_form.cleaned_data
            username = signup_info['username']
            email = signup_info['email']
            password = signup_info['password_1']
            user = User.objects.create_user(
                username=username,
                email=email,
                password=password)
            user.save()
            # redirect to main page(not written so far)
        else:
            # I guess something wrong here, but no idea how to fix it.
            return redirect(reverse("accounts:signup"))

    else:
        signup_form = forms.SignupForm()

    return render(reverse("accounts:signup"), {'form': signup_form})

谁能帮帮我？谢谢！

Answer 1

您的重定向调用没有显示错误，因为它已经失去了它的上下文。不重定向而是打印错误以进行日志记录就足够了。

而不是：

return redirect(reverse("accounts:signup"))

尝试：

print "Invalid Registration Attempt: user:{0} email:{1}".format(username, email)

当渲染时表单出现在上下文中时，将显示错误：

return render(reverse("accounts:signup"), {'form': signup_form})

Answer 2

您应该完全删除第一个 else 子句。如果表单无效，则不应重定向，而应跳转到最后的 render 调用，该调用会重新显示表单以及错误。

django 表单字段验证和错误显示

django form field validation and error display

python

forms

django