On Tuesday, 4 August 2015 17:32:11 UTC+1, Alex Heyden wrote:
>
> I don't quite follow what you're doing with set_first_call_true and
> set_first_call_false. Are you using that to control the for loop behavior?
>
> If you are, take a look at
> https://docs.djangoproject.com/en/1.8/ref/templates/builtins/#for.
> Django's template language has that built in.
>
> If you're pushing to an array like in your initial example, you don't need
> to handle commas at all. Here's an example out of Chrome's dev tools:
>
> > var a = []
> > a.push('foo')
> > a.push('bar')
> > a
> < ["foo", "bar"]
>
> If you want to define it in one go, try something more like:
>
> <script type="text/javascript">
> my_markers = [
> {% for current_addr in mymodel.addresses.all %}
> {
> lat: {{ current_addr.lat }},
> lon: {{ current_addr.lon }},
> description: {{ current_addr.description | safe }}
> }{% if not forloop.last %}, {% endif %}
> {% endfor %}
> ];
> </script>
>
>
An even better solution is to keep this logic where it belongs, in the
view, and use the accepted format for interchange of data with Javascript,
which is JSON.
my_markers = [{'lat': addr.lat, 'lon': addr.lon, 'description':
addr.description} for addr in mymodel.addresses.all]
return render(request, 'template.html', {'my_markers':
json.dumps(my_markers)})
and refer to it directly in the template:
<script type="text/javascript">
my_markers = {{ my_markers|safe }}
</script>
--
DR.
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