Map client holes fix

* fixes bug where holes in stored geometries would not be rendered properly on initial loading the map client
    * drawback: multiple polygons are treated as a single feature on the map client. Not a real issue but maybe we can find a better solution to this
* quality of life: renders geometry area in m² on detail and report view

konova/models/geometry.py

@@ -213,12 +213,9 @@ class Geometry(BaseResource):
             geojson (dict): The FeatureCollection json (as dict)
         """
         geom = self.geom
+        if geom.srid != srid:
             geom.transform(ct=srid)
 
-        polygons = []
-        for coords in geom.coords:
-            p = Polygon(coords[0], srid=geom.srid)
-            polygons.append(p)
         geojson = {
             "type": "FeatureCollection",
             "crs": {
@@ -230,8 +227,8 @@ class Geometry(BaseResource):
             "features": [
                 {
                     "type": "Feature",
-                    "geometry": json.loads(x.geojson)
+                    "geometry": json.loads(geom.json),
-                 } for x in polygons
+                 }
             ]
         }
         return geojson

konova/templates/konova/includes/parcels/parcels.html

@@ -2,11 +2,20 @@
 <div class="col-sm-12">
     <div class="card">
         <div class="card-header rlp-r">
+            <div class="row">
+                <div class="col-6">
                     <h5>
                         {% fa5_icon 'search-location' %}
                         {% trans 'Spatial reference' %}
                     </h5>
                 </div>
+                <div class="col-6 text-right">
+                    <h5>
+                        {{ obj.geometry.geom.area|floatformat:2 }} m²
+                    </h5>
+                </div>
+            </div>
+        </div>
         <div class="card-body">
             <div hx-trigger="load, every 5s" hx-get="{% url 'geometry-parcels' geom_form.instance.geometry.id %}">
                 <div class="row justify-content-center">