python - django: concatinating strings to create a url to static image in template -

i'm trying load image url composed of vairable numerical value. there template solution or have create filter in extras.py? rather write 1 liner. along following lines:

{% urltemp="media/"|add:info.personid|stringformat:"s"|add:".jpg"  %}         <img src="{% static urltemp %}" onerror="this.style.display='none'"/> {% endwith %} 

i know can use {% static your_url %} allways prefer this:

i have images in myproject/static/img/

my {{static_url}} (settings.py variable) points myproject/static

so in template do: <img src="{{static_url}}img/image_name.png" />

or using imagefield

{% item in item_list%}     <img src="{{ item.image.url }}" /> {% endfor %} 

in case do:

<img src="{{ media_url }}{{ info.personid }}.jpg" /> 

{{ media_url }} ends /

• you need media_url defined in settings.py