By Hadi
I have a flask app with the following structure
orthocms
-orthocms.py
-helper.py
orthocms/app
--__init__.py
--forms.py
--models.py
I define helper as the following to use globally without the need for importing it into every page
from app import app
import helper
@app.context_processor
def inject_user():
return dict(helper=helper)
When I test the app locally, I can safely use helper.* functions in templates, however, after deploying with app platform I get the following error
{{ helper.format_date(p.birth_date) }}
jinja2.exceptions.UndefinedError: 'helper' is undefined
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Hi there,
It’s generally a good practice to use absolute imports to avoid such issues. What you can try doing is to modify the import statement in orthocms.py to reflect the full path:
from orthocms import helper
I’m assuming here that orthocms is a package, and helper is a module in that package.
If this still does not work, as a debugging step, you can temporarily import helper directly in the template or view where it’s used to see if that resolves the issue. If it does, the problem is likely with how the context is passed or with the import path.
# In the view function
from orthocms import helper
Let me know how it goes!
Best,
Bobby
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