# Issue #381

* adds another validity check to SimpleGeomForm (is_size_valid) to make sure the area of the entered geometry is somehow rational (>= 1m²)
* optimizes performance of django command sanitize_db
* extends Geometry model with two new attributes, holding timestamps when a parcel calculation has been started and ended
* finally drops unused update_parcel_wfs in favor of update_parcels in Geometry model
* refactors update_parcel method
* adds geometry buffer fallback in schneider/fetcher.py to avoid emptying of geometries when parcels shall be fetched
* finally removes utils/wfs/spatial.py
* extends GeomParcelsView according to #381
* updates translations
* removes redundant psycopg2-binary requirement

konova/utils/schneider/fetcher.py

@@ -28,7 +28,11 @@ class ParcelFetcher:
         self.geometry = geometry
 
         # Reduce size of geometry to avoid "intersections" because of exact border matching
-        geom = geometry.geom.buffer(-0.001)
+        buffer_threshold = 0.001
+        geom = geometry.geom.buffer(-buffer_threshold)
+        if geom.area < buffer_threshold:
+            # Fallback for malicious geometries which are way too small but would disappear on buffering
+            geom = geometry.geom
         self.geojson = geom.ewkt
         self.results = []