Question

我正在尝试在Django项目中使用twitter bootstrap设置错误样式。现在，我有一个简单的表单，该表单询问一个人的电子邮件地址，让他们按下一个按钮，然后将其提交到数据库。它还具有验证检查功能，以查看电子邮件在数据库中是否唯一。如果不是唯一的，则会引发错误消息“此电子邮件已被注册”。但是，如果出现错误，则对于重复的电子邮件，它将在输入字段旁边显示一个丑陋的项目符号列表，并显示文本This email is already registered。我正在尝试将其设置为在输入文本下方带有黄色i图标的小对话框显示的样式，例如在输入中不包含@符号（即不包含）的情况下一封电邮。当电子邮件中未包含有效域时（例如，没有附加.com。

我认为问题在于表单html的设置方式，或者视图如何处理表单错误。也许是因为表单字段是EmailField，所以is_valid指示器无效，因此显示了Twitter引导警报。

如何获取它以每次显示警报？下面是我的代码：

属于index.html的一部分

        <form class="form-inline" method="post">
          <div class="input-group input-group-newsletter">
            <div class="form-group">
              {% csrf_token %}
              {{ form }}
            </div>
            <div class="form-group">
              <div class="input-group-append">
                <button class="btn btn-secondary" type="submit">Button Text</button>
              </div>
            </div>
          </div>
        </form>

views.py

from django.shortcuts import render, HttpResponse
from django.views.generic import TemplateView

from appname.forms import AppForm


class AppView(TemplateView):
    template_name = 'apps/index.html'

    def get(self, request):
        form = AppForm()
        return render(request, self.template_name, {'form': form})

    def post(self, request):
        form = AppForm(request.POST)
        if form.is_valid():
            email = form.cleaned_data['email']
            form.save()
            form = AppForm()
            args = {'form': form, 'email': email, 'signedup': True}
        else:
            args = {'form': form, 'signedup': False}
        return render(request, self.template_name, args)

forms.py

from django import forms
from .models import AppModel


class AppForm(forms.ModelForm):
    email = forms.EmailField(required=True,
                             label='',
                             widget=forms.EmailInput(attrs={'class': 'form-control',
                                                                           'placeholder': 'Enter email...',
                                                                           'name': 'email',
                                                                           'aria-label': 'Enter email...',
                                                                           'aria-describedby': 'basic-addon'}))

    class Meta:
        model = AppModel
        fields = ('email',)

    def clean_email(self, *args, **kwargs):
        email = self.cleaned_data.get("email")
        if AppModel.objects.filter(email__iexact=email).exists():
            raise forms.ValidationError("This email is already registered.")
        return email

Answer 1

您可能想尝试Django消息框架。这个站点显示了它是如何完成的。我自己尝试了一下，并且工作正常，尽管我没有尝试将图标放入其中。

https://simpleisbetterthancomplex.com/tips/2016/09/06/django-tip-14-messages-framework.html

根据以下评论进行更新：

这是我的项目中的片段

在 settings.py

中

from django.contrib.messages import constants as messages
...
MESSAGE_TAGS = {
    messages.DEBUG: 'alert-info',
    messages.INFO: 'alert-info',
    messages.SUCCESS: 'alert-success',
    messages.WARNING: 'alert-warning',
    messages.ERROR: 'alert-danger',
}

messages.html 模板，该模板可以包含在您希望收到通知的任何模板中

{% if messages %}
    {% for message in messages %}
        <div class="alert {{ message.tags }} alert-dismissible " role="alert">
            <button type="button" class="close" data-dismiss="alert" aria-label="Close">
                <span aria-hidden="true">&times;</span>
            </button>
            {{ message }}
        </div>
    {% endfor %}
{% endif %}

log-in.html 模板

<body>
{% include 'trip_monitor/messages.html' %}
<div class="login-form">
    <form method="post">
        {% csrf_token %}
        <h2 class="text-center">Materials Management</h2>
        <p align="center">Please <strong>log in</strong> to continue.</p>

        <div class="form-group">
            <input name="username" type="text" class="form-control" placeholder="Username" required="required" autofocus>
        </div>
        <div class="form-group">
            <input  name="password" type="password" class="form-control" placeholder="Password" required="required" id="password">
        </div>
        <div class="form-group">
            <button type="submit" class="btn btn-primary btn-block">Log in</button>
        </div>
    </form>
</div>
</body>

views.py

from django.contrib import messages

def login(request):
    if request.method == 'POST':
        _username = request.POST['username']
        _password = request.POST['password']
        user = authenticate(request, username=_username, password=_password)
        if user is not None:
            auth_login(request, user)
            return redirect('/trip/')
        else:
            messages.error(request, 'Username or Password is incorrect!')  # this will be shown as pop-up message
            return render(request, 'trip_monitor/login.html')
    elif request.method == 'GET':
        if request.user.is_authenticated:
            return redirect('/trip/')
        else:
            return render(request, 'trip_monitor/login.html')

使用Twitter Bootstrap的Django错误样式

1 个答案: