Detecting unset variables in Django templates
django, templates, variables
Solution
Are you looking for this? http://docs.djangoproject.com/en/1.1/ref/templates/api/#invalid-template-variables
Have you tried setting `TEMPLATE_STRING_IF_INVALID`? e.g.,
TEMPLATE_STRING_IF_INVALID = 'DEBUG WARNING: template variable [%s] is not defined'
That will cause that string to be printed in the rendered html for each spot where an undefined variable was referenced, along with the variable name.
Read this: http://docs.djangoproject.com/en/1.1/ref/settings/#setting-TEMPLATE_STRING_IF_INVALID
Problem
As a long time PHP developer, I'm used to the idea of setting the error level for my application to warn me when I am using an uninitialized variable. I was wondering if a similar feature exists in Django, where I can detect at run-time that I am using a variable in my template that was not explicitly passed to the template via the view? For example, I misspelled a variable name in the template ``` {{ mysearch }} ``` When it should've been ``` {{ my_search }} ``` Common mistake, not paying attention while typing, etc. In PHP I would've seen a warning about using an uninitiailzed variable but Django doesn't seem to care and just keeps on going like nothing happened. From a debugging perspective, it would be awesome to detect when I've made a mistake like that. Any thoughts?