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Python DJANGO将新结果值从AJAX请求呈现到HTML页面_Python_Jquery_Html_Ajax_Django - Fatal编程技术网

Python DJANGO将新结果值从AJAX请求呈现到HTML页面

Python DJANGO将新结果值从AJAX请求呈现到HTML页面,python,jquery,html,ajax,django,Python,Jquery,Html,Ajax,Django,在过去的几天里,我试图学习在后端使用AJAX和django提交表单 我可以在django views.py(validate\u number)中使用AJAX成功获取表单输入值(工作)如下所示。 在这个views.pyvalidate_number中,我计算了新的数字总和,我希望这个总和值返回到html页面,但我不知道怎么做 知道如何将AJAX请求的结果呈现回html页面吗 这是密码 html格式: <form id="form" action='' data-validate-numbe

在过去的几天里,我试图学习在后端使用AJAX和django提交表单

我可以在django views.py(
validate\u number
)中使用AJAX成功获取表单输入值(工作)如下所示。 在这个views.py
validate_number
中,我计算了新的数字总和,我希望这个总和值返回到html页面,但我不知道怎么做

知道如何将AJAX请求的结果呈现回html页面吗

这是密码

html格式:

<form id="form" action='' data-validate-number-url="{% url 'validate_number' %}" method="POST" enctype="multipart/form-data">{% csrf_token %}
<div class="form-group col-md-6">
Select the C Raster Dataset:<br>
   <select name="CC" class="form-control" id="CC"> 
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
Select the P:<br>
   <select name="PP" class="form-control" id="PP">
     <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
Select the F:<br>
   <select name="FF" class="form-control" id="FF">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
    </div>
<button type="button" class="btn btn-primary next-step1">Save and continue</button>


    <p>{{sum}}</p>


Select the GG:<br>
   <select name="G" class="form-control" id="GG">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
Select the JJ:<br>
   <select name="JJ" class="form-control" id="JJ">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
<button type="button" class="btn btn-primary next-step">Save and continue</button>
Select the FINAL:<br>
   <select name="FINAL" class="form-control" id="FINAL">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
    <option value="10">ten</option>
  </select>
 <button type="submit" class="btn btn-primary">Save</button>
</form>
URL.py:

url(r'^details/(?P<slug>[^\.]+)/$', views.blog_details, name='blog_details'),
url(r'^ajax/validate_number/$', views.validate_number, name='validate_number'),

在AJAX成功块中,您必须告诉它您希望它对以下信息做什么:

$(".next-step1").click(function (e) {
var form = $(this).closest("form");
var number1 = $("#CC").val();
var number2 = $("#PP").val();
$.ajax({
url: form.attr("data-validate-number-url"),
data:  {
      'number1': number1,
      'number2':number2
    },
dataType: 'json',
success: function (data) {
// 'data' is the dictionary received from the view.
// You could call it whatever you want.
    $('#sum).html(data.sum_json);
    /* Find 'id="sum"' and replace what's inside the tags(or innerHTML)
       with the dictionary value of 'sum_json'.
       If other keys exist in the 'data' dictionary,
       they are accessed the same way, as in 'data.sum_json_2'.
    */
}
});
index.html

<form id="form" action='' data-validate-number-url="{% url 'validate_number' %}" method="POST" enctype="multipart/form-data">{% csrf_token %}
<div class="form-group col-md-6">
Select the C Raster Dataset:<br>
   <select name="CC" class="form-control" id="CC"> 
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
Select the P:<br>
   <select name="PP" class="form-control" id="PP">
     <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
Select the F:<br>
   <select name="FF" class="form-control" id="FF">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
    </div>
<button type="button" class="btn btn-primary next-step1">Save and continue</button>


    <p id="sum"></p>


Select the GG:<br>
   <select name="G" class="form-control" id="GG">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
Select the JJ:<br>
   <select name="JJ" class="form-control" id="JJ">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
<button type="button" class="btn btn-primary next-step">Save and continue</button>
Select the FINAL:<br>
   <select name="FINAL" class="form-control" id="FINAL">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
    <option value="10">ten</option>
  </select>
 <button type="submit" class="btn btn-primary">Save</button>
</form>
这是我们
渲染到\u字符串
以发送到AJAX的模板。它以与
渲染
相同的方式渲染模板

sum_template.html

{{ sum }}
您不希望将_呈现为_string
index.html
,因为您将整个
索引
模板插入
,而不仅仅是
总和
。您可能还想在视图中添加
if
语句

if request.is_ajax() and request.POST:
过滤掉非AJAX请求


有人告诉我有更好的方法。这一切我都是自己想出来的,不知道是什么。如果您需要更多详细信息,请告诉我。

在您的AJAX成功模块中,您必须告诉它您希望它对信息做什么:

$(".next-step1").click(function (e) {
var form = $(this).closest("form");
var number1 = $("#CC").val();
var number2 = $("#PP").val();
$.ajax({
url: form.attr("data-validate-number-url"),
data:  {
      'number1': number1,
      'number2':number2
    },
dataType: 'json',
success: function (data) {
// 'data' is the dictionary received from the view.
// You could call it whatever you want.
    $('#sum).html(data.sum_json);
    /* Find 'id="sum"' and replace what's inside the tags(or innerHTML)
       with the dictionary value of 'sum_json'.
       If other keys exist in the 'data' dictionary,
       they are accessed the same way, as in 'data.sum_json_2'.
    */
}
});
index.html

<form id="form" action='' data-validate-number-url="{% url 'validate_number' %}" method="POST" enctype="multipart/form-data">{% csrf_token %}
<div class="form-group col-md-6">
Select the C Raster Dataset:<br>
   <select name="CC" class="form-control" id="CC"> 
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
Select the P:<br>
   <select name="PP" class="form-control" id="PP">
     <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
Select the F:<br>
   <select name="FF" class="form-control" id="FF">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
    </div>
<button type="button" class="btn btn-primary next-step1">Save and continue</button>


    <p id="sum"></p>


Select the GG:<br>
   <select name="G" class="form-control" id="GG">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
Select the JJ:<br>
   <select name="JJ" class="form-control" id="JJ">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
  </select>
<button type="button" class="btn btn-primary next-step">Save and continue</button>
Select the FINAL:<br>
   <select name="FINAL" class="form-control" id="FINAL">
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
    <option value="10">ten</option>
  </select>
 <button type="submit" class="btn btn-primary">Save</button>
</form>
这是我们
渲染到\u字符串
以发送到AJAX的模板。它以与
渲染
相同的方式渲染模板

sum_template.html

{{ sum }}
您不希望将_呈现为_string
index.html
,因为您将整个
索引
模板插入
,而不仅仅是
总和
。您可能还想在视图中添加
if
语句

if request.is_ajax() and request.POST:
过滤掉非AJAX请求


有人告诉我有更好的方法。这一切我都是自己想出来的,不知道是什么。如果您需要更详细的信息,请告诉我。

我将在这里介绍一个最小的计算应用程序。我们给出两个带有wish操作的数字,django进行计算并返回json格式的答案。 注意,我使用了ajax/jquery回调概念,并使用csrf_在django视图中禁用了csrf控件

HTML/javaScript:

    <div class="container">
        <form class="col-lg-6" id="form">
          <legend>Select number to make an operation</legend>
            Number 1: <input type="number" class="form-control" id="n1">
            Number 2: <input type="number" class="form-control" id="n2">
            Select operation:
              <select class="form-control" name="op" id="op">
                <option value="+">+</option>
                <option value="-">-</option>
                <option value="*">*</option>
              </select>
            <input type="submit" id="submit" value="Send">
        </form>
        <div>
            <h2 class="result-box">The result is : <strong id="result"></strong></h2>
        </div>
    </div>


    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>

    <script type="text/javascript">
        $(function() {
            function call_ajax(f) {
                const n1 = $('#n1').val();
                const n2 = $('#n2').val();
                const op = $('#form option:selected').text();
                const data = {n1: n1, n2: n2, op: op}
                // you can verify the data in the browser console
                console.log(data);
                $.ajax({
                    url: '/ajax/make_operation/',
                    data: data,
                    type: 'POST',
                    success: f,
                    error: function(error) {
                        console.log(error);
                    }
                });
            }

            function server_response(response) {
                // convert to json format
                const r = JSON.parse(response);
                console.log(r);
                // include the result in the dom
                var text = document.createElement('i');
                text.innerHTML = '<strong id="result">' + r.result + '</strong>';
                $('#result').replaceWith(text);
            }

            //Validate
            $('#form').submit(function(e) {
                e.preventDefault();
                call_ajax(server_response);
            });
        });
    </script>
  </body>
</html>
url.py

from django.contrib import admin
from django.urls import path
from ajax import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('ajax/make_operation/', views.make_operation),
]

因此,有很多选择可以做到这一点。我只展示了一种使用django实现ajax的方法(没有django表单)。

我将在这里介绍一个最小的计算应用程序。我们给出两个带有wish操作的数字,django进行计算并返回json格式的答案。 注意,我使用了ajax/jquery回调概念,并使用csrf_在django视图中禁用了csrf控件

HTML/javaScript:

    <div class="container">
        <form class="col-lg-6" id="form">
          <legend>Select number to make an operation</legend>
            Number 1: <input type="number" class="form-control" id="n1">
            Number 2: <input type="number" class="form-control" id="n2">
            Select operation:
              <select class="form-control" name="op" id="op">
                <option value="+">+</option>
                <option value="-">-</option>
                <option value="*">*</option>
              </select>
            <input type="submit" id="submit" value="Send">
        </form>
        <div>
            <h2 class="result-box">The result is : <strong id="result"></strong></h2>
        </div>
    </div>


    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>

    <script type="text/javascript">
        $(function() {
            function call_ajax(f) {
                const n1 = $('#n1').val();
                const n2 = $('#n2').val();
                const op = $('#form option:selected').text();
                const data = {n1: n1, n2: n2, op: op}
                // you can verify the data in the browser console
                console.log(data);
                $.ajax({
                    url: '/ajax/make_operation/',
                    data: data,
                    type: 'POST',
                    success: f,
                    error: function(error) {
                        console.log(error);
                    }
                });
            }

            function server_response(response) {
                // convert to json format
                const r = JSON.parse(response);
                console.log(r);
                // include the result in the dom
                var text = document.createElement('i');
                text.innerHTML = '<strong id="result">' + r.result + '</strong>';
                $('#result').replaceWith(text);
            }

            //Validate
            $('#form').submit(function(e) {
                e.preventDefault();
                call_ajax(server_response);
            });
        });
    </script>
  </body>
</html>
url.py

from django.contrib import admin
from django.urls import path
from ajax import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('ajax/make_operation/', views.make_operation),
]

因此,有很多选择可以做到这一点。我只展示了一种使用django实现ajax的方法(没有django表单)。

如何将sum从views.py发送到ajax成功块?抱歉。更新的答案我看到你还没有标出答案。我又更新了我的。我知道这项工作,你能解释一下这项工作是如何处理多个值的吗?例如,如果我有sum1、sum2、sum3?我试着使用这样的东西:
sum_json_1=render_to_string('index.html'、{'sum1':sum1})sum_json_2=render_to_string('index.html'、{'sum2':sum2})返回JsonResponse({'sum_json_json_1':sum_json_1'、'sum_json__2':sum___2})
和在ajax中:
$('#sum1).html(data.sum_json_1)$html(data.sum#u json_2)但不是工作如何将sum从views.py发送到AJAX成功块?抱歉。更新的答案我看到你还没有标出答案。我又更新了我的。我知道这项工作,你能解释一下这项工作是如何处理多个值的吗?例如,如果我有sum1、sum2、sum3?我试着使用这样的东西:
sum_json_1=render_to_string('index.html'、{'sum1':sum1})sum_json_2=render_to_string('index.html'、{'sum2':sum2})返回JsonResponse({'sum_json_json_1':sum_json_1'、'sum_json__2':sum___2})
和在ajax中:
$('#sum1).html(data.sum_json_1)$html(data.sum#u json_2)但不是工作你给我看了一个很好的例子谢谢,但在我的例子中我有两个不同的视图。py,怎么做?你给我看了一个很好的例子谢谢,但在我的例子中我有两个不同的视图。py,怎么做?