Ajax在views.py django中发送数据两次 [英] Ajax sending data twice in views.py django

问题描述

我在index.html中有这个form，在单击一个名为.graph-btn的按钮时有两个提交按钮 我正在使用jquery和ajax将数据从form发送到Django.

I have this form in index.html and two submit button on clicking on one button named .graph-btn I m using jquery and ajax to send data from form to Django.

代码: index.html

 <form action="{% url 'Graph' %}" method="post">
                        {% csrf_token %}
                <table class="table table-striped table-dark" cellspacing="0">
                    <thead class="bg-info">
                    <tr>
                        <th>Company's Symbol</th>
                        <th>Current Price</th>
                        <th>View Current chart</th>
                        <th>Action</th>
                    </tr>
                    </thead>
                    <tbody>
                    {% for a,b in stocks %}
                    <tr>
                        <th scope="row" class="comp_name">{{ a }}</th>
                        <td>{{ b }}</td>
                        <td>
                            <input type="submit" class="btn graph-btn" name="_graph" value="View Graph">
                        </td>
                        <td>
                            <input type="submit" class="btn predict-btn" formaction="{% url 'Graph' %}" name="_predict" value="Predict Closing Price">
                        </td>
                    </tr>
                    {% endfor %}
                    </tbody>
                </table>
                </form>

<script>
    $(".graph-btn").click(function(e) {
    var $row = $(this).closest("tr");
    var $text = $row.find(".comp_name").text();
    var name = $text;
    console.log(name);
    $.ajax({
        type:'POST',
        dataType: "json",
        url:'{% url 'Graph' %}',
        data:{
            'text': name,
            'csrfmiddlewaretoken':$('input[name=csrfmiddlewaretoken]').val(),
        },
        success:function(json){
        },
        error : function(xhr,errmsg,err) {
        }
    });
});
</script>

在这里，我想从名为.comp_name的th行中获取数据，并将数据传递给Django中的views.py. 有问题的是Ajax.

here I want to take data from th row named .comp_name and pass the data to views.py in Django. There is problem is Ajax.

views.py

def graph(request):
    if request.method == 'POST':
        print("testing....")
        print(request.body)
        print(request.POST.get('text'))
        name = request.POST.get('text')
        context = {
            'name': name,
        }
        print(context)
        return render(request, 'StockPrediction/chart.html')
    else:
        return render(request, 'StockPrediction/greet.html')

我正在使用Print语句检查是否一切正常. 问题是，当我单击.graph-btn时，它会抛出两个迭代值.第一个是右边，但是第二个是None. 此处

I m using Print statement to check if everything is fine. the problem is that when I click on .graph-btn it throws me two iterative values. First one is the right but the second one is None. here

请帮帮我.

推荐答案

您不应使用jquery类选择器.使用id选择器("#id").现在发生这种情况是因为您只有一个带有"graph-btn"类的按钮.只需为for循环中的按钮分配ID({％，a，b占股票％})

you shoudn't use jquery class selector. use id selector("#id"). Now it happens because you have more then one button with 'graph-btn' class. Just assign IDs to your buttons in for loop ( {% for a,b in stocks %})

这篇关于Ajax在views.py django中发送数据两次的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！