add folium marker cluster to route /geolocalisation

app/routes.py

@@ -24,6 +24,7 @@ from collections import defaultdict
 
 from flask import Blueprint, render_template, request, url_for, redirect
 import folium
+from folium.plugins import MarkerCluster
 from pymongo import ASCENDING
 
 
@@ -191,6 +192,8 @@ def geolocalisation():
                                actes=plaintext_response(search, actecol, prince_bigram))
 
     m = folium.Map(location=[46.603354, 1.888334], zoom_start=6)
+    marker_cluster = MarkerCluster().add_to(m)
+
     markers = defaultdict(list)
 
     for result in actecol.find():
@@ -218,7 +221,8 @@ def geolocalisation():
                 location=[latitude, longitude],
                 popup=popup,
                 icon=folium.Icon(color='lightgray', icon="circle", prefix='fa')
-            ).add_to(m)
+            ).add_to(marker_cluster)
+            # to remove marker_cluster : .add_to(m)
 
     geolocalisation = m._repr_html_()
     return render_template("map.html", geolocalisation=geolocalisation)