I'm new to django and recently I'm following this tutorial to write a todo-list app. In part 2 I should customize the admin's change_list template and add an image into it. At first I use
<img class='btn' src='static/img/on.png'>
but it turns out to be invalid. Can anybody figure out what's the problem is? Thanks a lot.
Here is my folder structure
todo-list
todo-app
img
----on.png
----off.png
templates
admin
----change_list.html
todo-list