Django：AJAX和路径参数

Question

I am trying to figure out how to communicate variables a particular js file that makes an AJAX request in Django.

Say we have an url with a path param that maps to a particular view:

url(r'^post/(?P<post_id>\d+)/$', TemplateView.as_view('post.html'))

And then the post.html includes a script that performs an AJAX request to fetch the post as JSON:

post.html

<script src="{{ STATIC_URL }}/js/post.js"></script>
<div id="post-container"></div>

This could be the js file. Let's say we do it this way because the post (as JSON) needs to be used in a js plugin to display it in a particular fancy manner.

post.js

$.ajax({
   url: '/post/??post_id??',
   contentType: 'application/json'
})
.done(function(post_data) {
    togglePlugin(post_data);
});

My main concern is how to figure out what post_id is from the js file in order to make the appropriate call.

How are these parts usually connected in Django? The parts I am talking about are urls, path params, views and ajax.

Answer 1

You can pass a post_id variable to django template. However if you don't want it to "hurt", put your .js code (script) in you html file, rendered by django. So you can use django template tags.

For example:

        var url = "/post/{{post_id}}";
         $.ajax({
            type: 'POST',
            url: url,
            dataType: 'json',
            data: {
                some_field: field_data,
                some_other_field: field_data
            },
            success: function(data) {
                do_something();
            },
            error: function(data) {
                do_somethin();
            }
        });