Django passing JSON data to static getJSON/Javascript

Question

I am trying to grab data from my models.py and serialize it into a JSON object within my views.py.

Models.py:

class Platform(models.Model):
     platformtype = models.CharField(max_length=25)

Views.py:

def startpage(request):
   return render_to_response('Main.html');


def index(request):
   platforms_as_json = serializers.serialize('json', Platform.objects.all())
   return HttpResponse(platforms_as_json, content_type='json')

After doing this I want to pass this object into my static javascript file which is using getJSON to populate my drop down list for my template(Main.html).

JavaScript:

$.getJSON("{{platforms_as_json}}", function (data) {
 $.each(data, function (index, item) {
     $('#platformList').append(
          $('<option></option>').val(item).html(item.platformtype)
);
 });
});

I have looked at many other threads within SO, but all of them are for those using embedded JS within their template and/or not using getJSON. As of right now, data is not being displayed in the list when I run my Django development server. What am I doing wrong? Thank you.

UPDATE:

 <!DOCTYPE html>
<html>

<head>

{% load static from staticfiles %}
<script type = 'text/javascript' >

var platformsjson = "({% autoescape off %}{{platforms_as_json}}{% endautoescape %})";

</script>
</head>
<body>
<select id = "platformList"></select>

<ul id = "root"></ul>
<div id = "root"></div>
<script src = "{% static 'admin/js/platformddown_script.js' %}"></script>
</body>
</html>

platformddown_script.js:

$.each(platformsjson, function (index, item) {
   $('#platformList').append(
           $('<option></option>').val(item.platformtype).html(item.platformtype)
   )
   });

After this update it still doesn't work.

Answer 1

Main html render + json data

import json
from django.shortcuts import render

def startpage(request):
    platforms = Platform.objects.select_related().values('platformtype')
    return render(request, 'Main.html', {'platforms_as_json': json.dumps(list(platforms)),})

in template

{{ platforms_as_json }}

html and js

<select id="platformList"></select>

<script>
    $.each({% autoescape off %}{{platforms_as_json}}{% endautoescape %}, function (index, item) {
        $('#platformList').append(
                $('<option></option>').val(item.platformtype).html(item.platformtype)
        )
    });
</script>

Old examplehttps://gist.github.com/leotop/014a38bd97407a6380f2526f11d17977

Answer 2

我还遇到了一个视频资源，这里有力地解释了 JSONP 的工作原理。

Django passing JSON data to static getJSON/Javascript

Question

2 answers

solution1
1 ACCPTED 2016-07-27 19:19:04

solution2
-1 2021-02-11 16:37:22

Django passing JSON data to static getJSON/Javascript

Question

2 answers

solution1 1 ACCPTED 2016-07-27 19:19:04

solution2 -1 2021-02-11 16:37:22

solution1
1 ACCPTED 2016-07-27 19:19:04

solution2
-1 2021-02-11 16:37:22