CODEWITHSUNDEEP
djangohtmxdjango-debug-toolbar
Moses Machua
Moses Machua

Reputation: 11522

Why is django debug toolbar causing a 'ValueError at ... Another profiling tool is already active' error when Htmx ajax fires?

I had django-debug-toolbar working fine in my application until I added htmx. Now I'm getting Another profiling tool is already active error. enter image description here

The page loads then htmx fires on load to add more content. Below is the offending line

<div id="group-list" hx-get="{% url "my-rental-property-groups" rental_property.id %}" hx-trigger="load"></div>

If I change the change the hx-trigger attribute to hx-trigger="load delay:5s" to add a delay of 5 seconds, then the error goes away but that's not a solution. A smaller delay still throws the same error.

If I add "SHOW_TOOLBAR_CALLBACK": lambda request: False, to DEBUG_TOOLBAR_CONFIG section below, the page renders fine but the Debug Toolbar is disabled

DEBUG_TOOLBAR_CONFIG = {
    "SHOW_TOOLBAR_CALLBACK": lambda request: False, #THIS LINE DISABLES DEBUG TOOLBAR WIHOUT SETTING DEBUG TO FALSE    
    "SHOW_TEMPLATE_CONTEXT": True,
    "ROOT_TAG_EXTRA_ATTRS": "hx-preserve", # https://django-debug-toolbar.readthedocs.io/en/latest/tips.html#working-with-htmx-and-turbo
}

I'm looking for a solution that will allow me to keep Htmx and Django Debug Toolbar working together.

Upvotes: 2

Views: 1177

Answers (2)

user21130211
user21130211

Reputation: 1

I have recently encouter this error multiple time using Python 3.12 and the answer is in the documentation :

For version of Python 3.12 and later you need to use python -m manage runserver --nothreading Concurrent requests don’t work with the profiling panel.

Source

Upvotes: 0

Moses Machua
Moses Machua

Reputation: 11522

TL;DR Uncheck the Profiling checkbox in Django Debug Toolbar panel

AARGH!!! It turned out to be something stupid. I had accidentally clicked the Profiling checkbox at the bottom of the Django Debug Toolbar panel (See screenshot below). I unchecked this and everything is working fine. Obviously you have to navigate to a page that's not throwing the error to access this setting. With profiling unchecked, now I don't need the SHOW_TOOLBAR_CALLBACK setting in the config

enter image description here

Upvotes: 7

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