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Overriding blueprint template does not take effect until restart #298

adrianlopezroche opened this Issue · 1 comment

2 participants


Overriding a blueprint's template does not take effect without restarting the development server.

Follow these steps to reproduce:

  • First, add and register the following blueprint without creating any templates. It should produce a "Template Not Found" error:
from flask import Blueprint, render_template

blueprint = Blueprint(

def TestOverride():
    return render_template('test.html')
  • Next, add a new template called "test.html" under the blueprint's template directory and refresh the page. It should find the template without restarting the server.

  • Now add a second template having the same filename but different content under the application's template directory and refresh the page. The page's content will not change without restarting the server.

  • Restart the server and refresh the page. Confirm the content has now changed.


This is tricky to do because of how the loaders work. For development purposes I would recommend disabling the template cache until this is properly fixed.

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