#49 Update all parcels command

* adds update_all_parcels command which can be used e.g. with cronjob once a month to update all parcels and districts

konova/management/commands/update_all_parcels.py

@@ -0,0 +1,41 @@
+"""
+Author: Michel Peltriaux
+Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
+Contact: michel.peltriaux@sgdnord.rlp.de
+Created on: 04.01.22
+
+"""
+from konova.management.commands.setup import BaseKonovaCommand
+from konova.models import Geometry, Parcel, District
+
+
+class Command(BaseKonovaCommand):
+    help = "Checks the database' sanity and removes unused entries"
+
+    def handle(self, *args, **options):
+        try:
+            self.update_all_parcels()
+        except KeyboardInterrupt:
+            self._break_line()
+            exit(-1)
+
+    def update_all_parcels(self):
+        num_parcels_before = Parcel.objects.count()
+        num_districts_before = District.objects.count()
+        self._write_warning("=== Update parcels and districts ===")
+        geometries = Geometry.objects.all().exclude(
+            geom=None
+        )
+        self._write_warning(f"Process parcels for {geometries.count()} geometry entries now ...")
+        for geometry in geometries:
+            geometry.update_parcels()
+
+        num_parcels_after = Parcel.objects.count()
+        num_districts_after = District.objects.count()
+        if num_parcels_after != num_parcels_before:
+            self._write_error(f"Parcels have changed: {num_parcels_before} to {num_parcels_after} entries. You should run the sanitize command.")
+        if num_districts_after != num_districts_before:
+            self._write_error(f"Districts have changed: {num_districts_before} to {num_districts_after} entries. You should run the sanitize command.")
+
+        self._write_success("Updating parcels done!")
+        self._break_line()