在django传递的数据中获取变量 [英] Get variables in datables passed by django

问题描述

我在我的django应用程序中使用jquery datatables。我的表中的每一行都有一个命名的url到另一个页面与对象。
{％url'obj_details'obj.id％} 。当我点击url我得到没有反向匹配发现错误。我已经详细检查了这个问题。 url obj_details是存在于urls.py

  url（r'^ obj /（？P< pk> ; [\w  - ] +）/ details $'，objDetailsView.as_view（），name ='obj_details'）
  

datatables使用另一个视图来获取所需的数据，如下所示。

  def objdtable（request）：
 
 obj_json_tuple = list（obj.objects.all（）。values_list（objnum，ob_field，date，price，field2，seller，id）） 
 
返回HttpResponse（json.dumps（obj_json_tuple））
  

我正在显示所有字段，除了ID在数据表中没有问题。

 列：[
 {：fields.objnum }，
 {：fields.ob_field}，
 {：fields.date}，
 {：fields.price}，
 {：fields.field2}，
 {：fields.seller}，
] 
  

如何将objdtable视图返回的id作为url obj_details的参数传递？我试过 {％url'obj_details'fields.id％} 和 {％url'obj_details'id％} 但是没有发现反向匹配发现错误。然后我在数据表中尝试

 data：
 {
'bid'：fields.id 
} 
  

并将命名的URL更改为链接 obj / data / details 我也尝试过将数据更改为fields.id，但没有任何效果。如何访问django在数据表中传递的变量？我可以在url中使用该变量，以便解决问题。

PS：将URL更改为 url（r'^ / obj / （？P< pk> \d +）/ details $，objDetailsView.as_view（），name ='obj_details'）但是它给了我下面没有反向匹配发现的错误。 >

  NoReverseMatch at / myapp / obj / list / Reverse for'obj_details'with arguments'（''，）'和keyword arguments'{} ' 未找到。 1模式尝试：['myapp / obj /（？P< pk> \\d +）/ details $'] 
  

html模板中的错误在下面粘贴。

 defaultContent： < a class ='btn btn-success btn-sm'href ={％url'obj_details'id％}style ='color：white'>< i class ='fa fa-eye fa-lg' >< / i>< / a> 
  

解决方案

您的问题是您正在尝试使用 jQuery 变量来呈现 Django URL。

对象JSON数据是 jQuery ，所以您不能在 {％url'obj_details'id％} 调用中使用它。

当我遇到这样的问题时，我会这样做：

 < script> 
 
 //让我们假设你有你的jQuery ID值
 var id = yourdict.obj.id; 
 //现在你有一个jQuery变量中的ID可以这样做
 //生成一个带有aux ID'000'的URL 
 var URL ={％url'obj_details'000 ％}
 URL = URL.replace（'000'，id）//将aux ID替换为真实的
 
< / script> 
  

I am using jquery datatables in my django app. every row in my table have a named url to another page together with the object. {% url 'obj_details' obj.id %}. When I click on the url I am getting no reverse match found error. I have inspected the issue in detail. The url obj_details is a named url that exists in the urls.py

url(r'^obj/(?P<pk>[\w-]+)/details$', objDetailsView.as_view(), name='obj_details')

datatables uses another view to get the required data it is as pasted below

def objdtable(request):

obj_json_tuple = list(Obj.objects.all().values_list("objnum", "ob_field", "date", "price", "field2", "seller", "id"))

return HttpResponse(json.dumps(obj_json_tuple))

I am displaying all fields except id in datatables without issues.

"columns": [
                   { "": "fields.objnum"},
                   { "": "fields.ob_field" },
                   { "": "fields.date" },
                   { "": "fields.price" },
                   { "": "fields.field2" },
                   { "": "fields.seller" },
           ]

How can I pass id returned by objdtable view as an argument to url obj_details? I have tried {% url 'obj_details' fields.id %} and {% url 'obj_details' id %} but bothe are giving no reverse match found errors. Then I tried in datatables

"data":
         {
         'bid':fields.id
         }

and changed the named url to the link obj/data/details I have also tried changing data to fields.id but nothing worked. How can I access a variable passed by django in datatables? I can use that variable in url so that the issue could be solved.

PS:On changing url to url(r'^/obj/(?P<pk>\d+)/details$, objDetailsView.as_view(), name='obj_details') but its giving me the no reverse match found error as pasted below.

NoReverseMatch at /myapp/obj/list/Reverse for 'obj_details' with arguments '('',)' and keyword arguments '{}' not found. 1 pattern(s) tried: ['myapp/obj/(?P<pk>\\d+)/details$']

The error in html template is in the line pasted below.

"defaultContent": "<a class='btn btn-success btn-sm' href="{% url 'obj_details' id  %} " style='color:white'> <i class='fa fa-eye fa-lg'></i> </a>"

解决方案

Your issue is that you're trying to use a jQuery variable to render a Django URL.

The Object JSON data is jQuery, so you can't use it on your {% url 'obj_details' id %} call.

When I faced an issue like that I do something like this:

<script>

    // Let's supose you have your jQuery ID value here
    var id = yourdict.obj.id;
    // Now you have the ID inside a jQuery variable you can do this
    // Generate an URL with an aux ID '000'
    var URL = "{% url 'obj_details'  000  %}"
    URL = URL.replace('000', id)  // Replace the aux ID with the real one

</script>

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