limit for geojson properties

Author: petschki

src/collective/collectionfilter/baseviews.py

@@ -304,8 +304,11 @@ def data_geojson(self):
             """Return the geo location as GeoJSON string.
             """
             features = []
+            locations = self.locations
+            count = len(locations)
+            limit = self.settings.geojson_properties_limit
 
-            for it in self.locations:
+            for it in locations:
                 if not it.longitude or not it.latitude:
                     # these ``it`` are brains, so anything which got lat/lng
                     # indexed can be used.
@@ -324,13 +327,14 @@ def data_geojson(self):
                     }
                 }
 
-                props = IGeoJSONProperties(it.getObject(), None)
-                if getattr(props, 'popup', None):
-                    feature['properties']['popup'] = props.popup
-                if getattr(props, 'color', None):
-                    feature['properties']['color'] = props.color
-                if getattr(props, 'extraClasses', None):
-                    feature['properties']['extraClasses'] = props.extraClasses
+                if count < limit:
+                    props = IGeoJSONProperties(it.getObject(), None)
+                    if getattr(props, 'popup', None):
+                        feature['properties']['popup'] = props.popup
+                    if getattr(props, 'color', None):
+                        feature['properties']['color'] = props.color
+                    if getattr(props, 'extraClasses', None):
+                        feature['properties']['extraClasses'] = props.extraClasses
 
                 features.append(feature)
 

src/collective/collectionfilter/interfaces.py

@@ -286,3 +286,15 @@ class ICollectionMapsSchema(ICollectionFilterBaseSchema):
             defaultFactory=map_layers_default,
             missing_value=[],
             value_type=schema.Choice(vocabulary='plone.formwidget.geolocation.vocabularies.map_layers'))  # noqa: E501
+
+        geojson_properties_limit = schema.Int(
+            title=_(
+                u'geojson_properties_limit',
+                default=u"Limit for GeoJSON properties"),
+            description=_(
+                u'help_geojson_properties_limit',
+                default=u"If the search result is larger than this limit, no additional "
+                "GeoJSON properties (like popup information) are shown."),
+            required=False,
+            default=500,
+        )