Re: Passing parameters / attributes to javascript in a template

After some more tests, I have managed to understand where my problem is (but I don't know how to resolve it).
Here is my final piece of code :

<script type="text/javascript" src="{% static "js/geomap_var.js" %}"></script>

<script type="text/javascript">
    my_markers = [
    {{ mymodel.set_first_call_true }}
    {% for current_addr in mymodel.addresses.all %}
        {% if not mymodel.first_call %},{% endif %}
        {
            lat: {{ current_addr.lat }},
            lon: {{ current_addr.lon }},
            description: {{ current_addr.description | safe }}
        }
    {{ mymodel.set_first_call_false }}
    {% endfor %}
    ];
</script>
   
<script type="text/javascript" src="{% static "js/geomap_body.js" %}"></script>

I had to add an attribute "first_call" to mymodel, so that my javascript declaration was correct (in an array, we should always write the comma between 2 elements, but not after each element or before each element).
The only problem is that every time I call mymodel.set_first_call_true or mymodel.set_first_call_false, it inserts a "none" inside my javascript code.
Is it possible to "delete" the "non" statement ?

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