Passing form variable dynamically to Django template tag

Question

I want to pass a variable to django template tag dynamically but I could not succeed.

<input id="country" />
<div id="button"> Button </div>

$('#button').click(function(){
    var dynamicVar=$('#country').val(); 
    var tags= {    
    source: {% url myView dynamicVar %}  /* but {% url myView 'someValue' %} works */
    select: function(event, s){
        $("#city").val(s.label);
        };
    $("#city").autocomplete(tags);
});

I am getting this NoReverseMatch error, saying the dynamicVar is not passed.

The long story: I am trying to get 2 cascaded dropdown lists. User selects a country, then City input becomes available. I want city field to be auto-completed field. Currently, without country field, it works but the query is slow. So I want to pre-filter it.

http://stackoverflow.com/questions/3057318/passing-variable-urlname-to-url-tag-in-django-template — Pawel Furmaniak, Mar 18 '13 at 09:54
Look carefully at your rendered page, `var dynamicVar` is at client side. — iMom0, Mar 18 '13 at 10:01
@iMom0 yes I am trying to understand how can I pass the client side variable to server without loading another view. — Emmet B, Mar 18 '13 at 10:06
@UszyWieloryba I had tried that, no success either, its just for passing context variables. — Emmet B, Mar 18 '13 at 10:07
If you are passing `str value`, it must be `'dynamicVar'` or `country=dynamicVar`. I don't know your url codes so I'm defining country as passing parameter for just an example — catherine, Mar 18 '13 at 10:14

Pawel Furmaniak · Accepted Answer · 2013-03-18T10:24:04.693

1

{% url myView dynamicVar %} is rendered on the server side, so you have to:

var dynamicVar = $('#country').val(); 
var url = 'http://your_site.com/autocomplete_country/' + dynamicVar + '/'

To avoid hardcoding server name in the template, use request.get_host

edited Mar 18 '13 at 10:24

answered Mar 18 '13 at 10:17

Pawel Furmaniak

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I guess this probably should work, I need to check when I get back to my workstation and select as the answer if it works. – Emmet B Mar 18 '13 at 10:51

Passing form variable dynamically to Django template tag

1 Answers1