Django use a variable within a template tag

问题

I am using the static template tag in my Django template:

{% load staticfiles %}
<img src="{% static "my_app/myexample.jpg" %}" alt="My image"/>

But instead of "my_app/myexample.jpg", I need to use a file name that is a property of my model object (i.e. {{ SampleModel.0.propertyValue }}, which I am passing as context to this template. But how do I include {{ ... }} within the static template tag? It throws an error.

Any way out?

回答1:

You can use use a variable in the static template tag. Note that you don't need the {{ or }}

{% static SampleModel.0.propertyValue %} 

回答2:

You can use any variable from your context in Django tags (custom tags may need some adjustments to work with it). In your case, this works fine:

{% static SampleModel.0.propertyValue %} 

This usages also work:

{% with my_computed_var=SampleModel.0.propertyValue %}
    {% static my_computed_var %} 
{% endwith %}

{% static some_var|customFilter %}

See the documentation about custom tags for more information, it is also relevant for Django defaults tags.

来源：https://stackoverflow.com/questions/31755765/django-use-a-variable-within-a-template-tag