如何将HTML表单文本字段的值获取到Django视图中?

I want to get the value of a html text field name="slider_value" back into a Django class SessionWizardView, specifically into the get_context_data method. From reading around on this site and others I understand I need to use self.request.

我希望将html文本字段名称=“slider_value”的值返回到Django类sessionwizard - dview中，特别是get_context_data方法中。通过浏览这个网站和其他网站，我明白我需要使用self.request。

From this answer I found slider_value = self.request.POST['slider_value'] but it only returns a "None" value. I am guessing this is because there is no value in the text field at the time.

从这个答案中，我找到了slider_value = self.request。POST['slider_value']，但它只返回一个"None"值。我猜这是因为当时的文本框没有任何价值。

My problem is that I only want the value of slider_value stored when the user clicks submit on that form page.

我的问题是，我只想要用户单击表单页面上的submit时存储的slider_value的值。

Can anyone tell me how can I get the value of the html text field name="slider_value" into my get_context_data method after the user has clicked the submit button?

谁能告诉我，在用户单击submit按钮后，如何将html文本字段名称="slider_value"的值输入到get_context_data方法中?

Below is my code so far

下面是我目前的代码

views.py

views.py

This is a shortened version of my get_context_data method

这是我的get_context_data方法的缩短版本

class SurveyWizardOne(SessionWizardView):                          
    def get_context_data(self, form, **kwargs):
        context = super(SurveyWizardOne, self).get_context_data(form, **kwargs)  
        if self.steps.current in ['5','6','7','8','9','10','11','12','13','14','15','16']:

            step = int(self.steps.current)

            if step in (5, 6, 7):
                image = random.choice(PATH_ONE_IMAGES)   
                images.insert(step - 5, image)        
                PATH_ONE_IMAGES.remove(image)
                context['display_image'] = image

            if step == 5:      
                print 'you are on step 5'         
                slider_value = self.request.POST['slider_value']              
                print 'This is the slide value', slider_value

           ....
           ....

    return context

html

html

This is my html form, I am trying to get the value of the text field names 'slider_value'. It corresponds to a jQuery slider (value -100 - +100)

这是我的html表单，我试图获取文本字段名'slider_value'的值。它对应于jQuery滑动条(值-100 - +100)

<form action="" method="post">{% csrf_token %}
    <img src="{% static "survey/images/pathone/" %}{{display_image}}"/>     

    <div class="slider" id="one"></div>                             
    <div id="slider-result"></div>   
    <input type="text" name="slider_value" id="hidden1"/>                           
    <script src="{% static "survey/js/slider_two.js" %}"></script>

    <input type="submit" value="{% trans "submit" %}"/>
</form>

slider_two.js

slider_two.js

This is my jQuery slider. It updates the above text field, slider_value

这是jQuery滑动条。它更新上面的文本字段slider_value

$('#submit').click(function() {
    var username = $('#hidden').val();
    if (username == "") username = 0; 
    $.post('comment.php', {
        hidden: username
    }, function(return_data) {
        alert(return_data);
    });
});

$(".slider").slider({
    animate: true,
    range: "min",
    value: 0,
    min: -100,
    max: +100,
    step: 1,

    slide: function(event, ui) { 
      $("#slider-result").html(ui.value);
      if($(this).attr("id") ==  "one")
          $("#hidden1").val(ui.value);
    }
});

As always, thanks!

一如既往,谢谢!

2 个解决方案

#1

To get the value you need a request, you can use self.request. Just initialize a form and get it from there.

要获取需要的值，可以使用self.request。只需初始化一个表单，然后从那里获取它。

As a reference you could use this example in the docs.

作为参考，您可以在文档中使用这个示例。

def get_context_data(self, **kwargs):
    # Call the base implementation first to get a context
    context = super(PublisherDetail, self).get_context_data(**kwargs)
    # Add in a QuerySet of all the books
    context['book_list'] = Book.objects.all()
    form = myForm(request.POST or None)
    return context

#2

First, in your click listener, where you tried to ge slider_value you are referencing the wrong id, it should be $("#hidden1");

首先，在您的单击侦听器中，您试图使用slider_value引用错误的id，它应该是$(“#hidden1”);

Second, in your post Ajax call, you sent slider_value's value as parameter name hidden, and in your view, you tried to get it by name 'slider_value', it should be 'hidden'. Or you can change it in your Ajax call to 'slider _value'.

其次，在您的post Ajax调用中，您将slider_value的值作为参数名隐藏，在您的视图中，您试图以'slider_value'的名称获取它，它应该是'hidden'。或者可以在Ajax调用中更改为'slider _value'。

#1