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Django debug display all variables of a page

Posted by: admin November 30, 2017 Leave a comment

Questions:

Is there a template tag (or any other trick) I can use to display all the variables available in a page?

Answers:

If DEBUG is enabled, there’s a template tag called {% debug %}

Questions:
Answers:

There are several options (some of them already listed before):

  1. django builtin debug tag – I use this boilerplate to display it properly:

    <pre>
    {% filter force_escape %}
    {% debug %}
    {% endfilter %}
    </pre>

  2. Use django template debug application’s tags like attributes, variables and details or you can even set a breakpoint inside of a template where you can inspect everything with pdb debugger (or ipdb)

  3. Django debug toolbar – has a template panel for this purpose

Usually all debug features work only when the app is in DEBUG mode.

Questions:
Answers:

The debug toolbar does all this and much, much more. See the screencast for more. If you literally just want the variables, you could try

assert False, locals()

in your view

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Pro tip. Use textarea and auto select onclick for easier copy-paste:

<textarea onclick="this.focus();this.select()" style="width: 100%;"> {% filter force_escape %} {% debug %} {% endfilter %}</textarea>

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A slightly more complex solution with better rewards is to load django-debug-toolbar (documentation here)

There’s an option called ‘Templates’ with another option to ‘Toggle context’ and you can see all the variables passed to your template, as well as the ability to see the code behind the template.

Example of django-debug-toolbar template debugging