Show different pop-ups for different polygons in a GeoJSON [Folium] [Python] [Map]

Question

I am using folium to visualise zones in an city.

My GeoJSON is a FeatureCollection with multiple polygons as features. I want to be able to add different popups for

Answer 1

To build on @David Olmo Pérez's answer, this seemed more intuitive to me.

# Create feature group to add to folium.Map object
layer = folium.FeatureGroup(name='your layer name', show=False)

# load GEOJSON, but don't add it to anything
temp_geojson = folium.GeoJson('path/to/your/file.geojson')

# iterate over GEOJSON, style individual features, and add them to FeatureGroup
for feature in temp_geojson.data['features']:
    # GEOJSON layer consisting of a single feature
    temp_layer = folium.GeoJson(feature,
                                style_function={
                                    'color': '#000000',
                                    'opacity': 0.7,
                                })
    # lambda to add HTML
    foo = lambda name, source: f"""
        
        """
    # create Popup and add it to our lone feature
    # this example embeds a .png
    folium.Popup(
        html=foo('name of your IFrame',
                 f'path/to/embed/file_{feature["properties"]["some_attribute"]}.png')
    ).add_to(temp_layer)

    # consolidate individual features back into the main layer
    temp_layer.add_to(layer)

# add main layer to folium.Map object
layer.add_to(m)