Geoman (Leaflet) > PostGIS > Python > PostGIS > Geoman (Leaflet)

[wietmazairac]

Use case:
User draws a polygon.
This polygon is saved in a database.
Python retrieves data from the database and performs some calculations.
Python saves results in database.
Leaflet retreives results from database and presents them to the user.

The framework is Django.

Questions:

1. Are these the right steps to exchange data between Geoman and Python?
2. I have a PostGIS database/server running. How to store a polygon to that database?

Is this the right approach, or should I use other software/tools?
I cannot find an example in which a Geoman polyline is saved to a PostGIS database.

EDIT:
Ok, I looked a bit more into it.
Apparently the method I suggested before is probably not the way forward.
I found a new way, and it goes like this...

• User draws polygon.
• A create event handler is triggered.
• That event call a Python function. Things like AJAX are involved here.

It is still not entirely clear, but it is probably possible to call a Python script from JS.
I have no experience implementing this. So, please let me know if this approach is right.

EDIT 2:
Ok, I think I am almost there.
The user draws a polygon. JS (AJAX?) calls a python function.
Then the question that remains is, where is that python function located.
Is that Python function actually a view in Django, that could also be called by entering the right URL in the browser?