使用嵌套模式时,如何区分模板中的Django消息?

时间:2018-09-12 02:44:05

标签: django django-models django-templates django-views bootstrap-4

所以,我已经花了2天时间对此进行研究。任何帮助都会很棒!

我认为,问题的核心是我同时嵌套了模式和自定义引导程序形式:第一个用于登录,第二个用于注册。让我们假设在一种情况下,我想在服务器端进行所有验证,并可能完全控制每个错误验证消息,以及它们应如何出现在何处以及如何分别出现在其输入中。我如何使用django.contrib.messages做到这一点?

**如果我可以使用Bootstrap 4的某些内置方法作为第一道防线进行验证,或者 data-validate-on-Blur 来像使用Zurb Foundation一样工作遵守,甚至更好。

每个base.html模式中的模板标记:

{% if messages %}
    <div class='container-fluid bg-white mt-5 pt-5 pl-4 mb-4'>
        {% for message in messages %}
            <p class="small font-poller text-danger">{{ message }}</p>
        {% endfor %}
    </div>
{% endif %}

到目前为止的试验和磨难:

按目前的情况,以及我在Stack Overflow上发现的各种变通办法,即使用jQuery切换模式(不是最漂亮的方法,因为它重新加载了页面),我仍然可以做到最好在模态和/或重定向视图之间流失我的消息。

我已经阅读了有关如何清除Django消息的主题,并认为这可能是一个解决办法,因此,如果在关闭模式或打开新模式后,基本上清除了消息,直到再次提交表单为止。换句话说,按下表单的提交按钮时,登录错误消息对于登录模式是唯一的,按下表单的提交按钮时,注册错误消息对于注册模式是唯一的。

不幸的是,我还没有弄清楚如何使用视图(views.py)成功实现此目的。想到的是,由于我使用模态来触发该事件,因此我必须使用jQuery,但在那方面我也失败了。我真的希望有一个更简单的解决方案。

预先感谢

开发


PS-我的摘要:

views.py

def signup(request):
    signup_errors = User.objects.validation(request.POST, 'register')
    if len(signup_errors):
        for error in signup_errors.values():
            messages.error(request, error)
            return redirect('/')
    else:
        new_user = User.objects.create(
            first_name      = request.POST['first_name'],
            last_name       = request.POST['last_name'],
            dob             = request.POST['dob'],
            phone           = request.POST['phone'],
            address         = request.POST['address'],
            city            = request.POST['city'],
            state           = request.POST['state'],
            zipcode         = request.POST['zipcode'],
            email           = request.POST['email'],
            password        = 
bcrypt.hashpw(request.POST['password'].encode(), bcrypt.gensalt()))
        request.session['first_name'] = new_user.first_name
        request.session['id']   = new_user.id
        messages.info(request, 'You have successfully submitted your 
information.')
        return redirect('/menu')


def login(request):
    login_errors = User.objects.validation(request.POST, 'login')
    if len(login_errors):
        for error in login_errors.values():
            messages.error(request, error)
            return redirect('/')
    else:
        current_user = User.objects.get(email=request.POST['email'])
        request.session['first_name']   = current_user.first_name
        request.session['id']           = current_user.id
        messages.info(request, 'You have successfully logged in.')
        return redirect('/menu')

models.py

class UserManager(models.Manager):
    def validation(self, postData, error_validation):
        errors = {}
        if error_validation == 'register':
            if not NAME_REGEX.match(postData['first_name']):
                errors['first_name'] = "First name can only contain 
letters!"
            if len(postData['last_name']) < 1:
                errors['last_name'] = "Last name cannot be blank."
            if not NAME_REGEX.match(postData['last_name']):
                errors['last_name'] = "Last name can only contain letters!"
        if error_validation == 'login':
            user = User.objects.filter(email=postData['email'])
            if not user:
                errors['user_login'] = "No account with that email in 
our system."
            elif not bcrypt.checkpw(postData['password'].encode(), 
user[0].password.encode()):
                errors['password_login'] = "Invalid email and/or 
password!"
        return errors

base.html中的登录模式

<div class="modal fade text-dark" id="loginModal">
    <div class="modal-dialog">
        <div class="modal-content font-paytone">
            <div class="modal-header shadow p-3 bg_primary rounded">
                <h5 class="modal-title font-poller text-light text_shadow_success2" id="loginModal">Login <i class="fa fa-user text-center ml-1"></i></h5>
                <button class="close" data-dismiss="modal"><span>&times;</span></button>
            </div>
            <div class="modal-body">

                <form id="login-form" action="{% url 'ecommerce_app:login' %}" method="POST" novalidate>
                    {% csrf_token %}
                    <div class="form-group">
                        <input type="email" name="email" class="form-control form-control-lg" placeholder="Email" required>
                    </div>
                    <div class="form-group">
                        <input type="password" name="password" class="form-control form-control-lg" placeholder="Password" required>
                    </div>                          
                    <input id="login-form-submit-btn" type="submit" class="btn btn-success btn-block border bg_primary btn_login" value="Log In">
                </form>

                <p class="pt-2 font-passion">Don't have an account? Sign up below!</p>
                <button id="login-form-signup-btn" class="btn btn-info btn-block border" data-toggle="modal" data-target="#registerModal">Sign Up</button>
            </div>

            {% if messages %}
                <div class="modal-footer">
                    <div class='container-fluid bg-white'>
                        {% for message in messages %}
                            <p class="small font-poller text-danger">{{ message }}</p>
                        {% endfor %}
                    </div>
                </div>
            {% endif %}

        </div>
    </div>
</div>

在base.html中注册模态

<div class="modal fade text-dark" id="registerModal">
    <div class="modal-dialog">
        <div class="modal-content font-paytone">
            <div class="modal-header shadow p-3 bg_primary rounded">
                <h5 class="modal-title font-poller text-light text_shadow_info" id="registerModal">Sign Me Up! <i class="fa fa-user-plus ml-1"></i></h5>
                <button class="close" data-dismiss="modal"><span>&times;</span></button>
            </div>
            <div class="modal-body">
                <form id='signup-form' action="/signup/" method="POST" novalidate>
                {% csrf_token %}
                    <div class="form-row">
                        <div class="form-group col-md-6">
                            <label for="first_name">First Name</label>
                            <input type="text" name="first_name" class="form-control" required>
                        </div>
                        <div class="form-group col-md-6">
                            <label for="last_name">Last Name</label>
                            <input type="text" name="last_name" class="form-control" required>
                        </div>
                    </div>

                    <div class="form-row">
                        <div class="form-group col-md-6">
                            <label for="dob">Date of Birth</label>
                            <input type="date" name="dob" class="form-control" required>
                        </div>
                        <div class="form-group col-md-6">
                            <label for="phone">Phone #</label>
                            <input type="tel" name="phone" class="form-control" required>
                        </div>
                    </div>

                    <div class="form-group">
                        <label for="address">Address</label>
                        <input type="text" name="address" class="form-control" placeholder="Street" required>
                    </div>

                    <div class="form-group">
                        <div class="form-row">
                            <div class="col-7">
                              <input type="text" class="form-control" name="city" placeholder="City" required>
                            </div>
                            <div class="col">
                              <input type="text" class="form-control" name="state" placeholder="State" required>
                            </div>
                            <div class="col">
                              <input type="text" pattern="[0-9]{5}" name="zipcode" class="form-control" placeholder="Zip" required>
                            </div>
                        </div>
                    </div>

                    <div class="form-group">
                        <label for="email">Email</label>
                        <input type="email" name="email" class="form-control" required>
                    </div>

                    <div class="form-row">
                        <div class="form-group col-md-6">
                            <!-- <label for="password">Password</label> -->
                            <input type="password" name="password" class="form-control" placeholder="Password" required>
                        </div>
                        <div class="form-group col-md-6">
                            <!-- <label for="confirm">Confirm Password</label> -->
                            <input type="password" name="confirm" class="form-control" placeholder="Confirm Password" required>
                        </div>
                    </div>
                </div>
                <div class="modal-footer">
                        <button type="submit" class="btn btn-info btn-block font-fredoka">Register</button>
                        {% if messages %}
                            <div class='container-fluid bg-white mt-5 pt-5 pl-4 mb-4'>
                                {% for message in messages %}
                                    <p class="small font-poller text-danger">{{ message }}</p>
                                {% endfor %}
                            </div>
                        {% endif %}
                </div>
            </form>
        </div>
    </div>
</div>

PSS-如果我可以帮助您澄清其他问题,请告诉我

1 个答案:

答案 0 :(得分:0)

好吧,我想我解决了自己的问题,并以某种方式不得不与其他人分享解决方案,因为我认为我确实为此失去了睡眠。无论如何,我不太确定这是否是Django消息类' extra_tags '属性的初衷,但就所有意图和目的而言,这都是一个明确的解决方案,可以让我控制这两个服务器,客户端验证消息。


首先,在创建和附加每个消息实例时,我分别将 extra_tags 分配给“注册”和“登录”:

views.py

def signup(request):
    errors = User.objects.validation(request.POST, 'register')
    if len(errors):
        for error in errors.values():
            messages.add_message(request, messages.ERROR, error, extra_tags="register")
        return redirect('/')

def login(request):
    errors = User.objects.validation(request.POST, 'login')
    if len(errors):
        for error in errors.values():
            messages.add_message(request, messages.ERROR, error, extra_tags="login")
        return redirect('/')

我检查是否有消息,然后遍历它们,检查标记是否为“注册”(或“登录”),如果是,则渲染一些文本,如果没有,则不渲染任何文本。 / p>

base.html

{% if messages %}
    {% for message in messages %}
        {% if 'register' in message.tags %}
            <p class="small font-poller text-danger registration_error_message">{{ message }}</p>
        {% endif %}
    {% endfor %}
{% endif %}

最后但并非最不重要的一点是,在通过任一模式提交表单之后,您将需要使用上述错误(或成功)消息重新加载模式。要使每个模式显示其各自的消息,您必须进行区分,然后切换为以与使用base.html中的 template_tags 相同的方式打开每个消息,只是这次使用一个小jQuery:

<script>
    $(document).ready(function() {
        {% if messages %}
            {% for message in messages %}
                {% if 'login' in message.tags %}
                    $('#loginModal').modal('toggle');
                {% elif 'register' in message.tags %}
                    $('#registerModal').modal('toggle');
                {% endif %}
            {% endfor %}
        {% endif %}
    });
</script>