django静态标签中的Javascript变量

Question

My situation:
In a Django template I would like to use something like this (currently wrong):

<script>
   var myimg1='img1.jpg';
   var myimg2='img2.jpg';
</script>

and somewhere else, being context_var a proper context variable:

<img src="{% if context_var %}
            {% static myimg1 %}
          {% else %}
            {% static myimg2 %}  
          {% endif %}" />

How can I get the same result in a simple way?
There is no simple way to define a template variable within the template, right?

Answer 1

Well, you can define a template variable like this:

{% with myimg1="img1.jpg" myimg2="img2.jpg" %}

<script>
   var myimg1={{ myimg1 }};
   var myimg2={{ myimg2 }};
</script>

<img src="{% if context_var %}
            {% static myimg1 %}
          {% else %}
            {% static myimg2 %}  
          {% endif %}" />

{% endwith %}

But Django template philosophy frowns upon such things. To quote:

The template system intentionally doesn't allow the following:

• Assignment to variables
• Advanced logic

It is best to pass them as context variables from your view.