Export codelist command

* adds a useful custom command which exports a specific selectable codelist into a csv file

codelist/management/commands/export_codelist.py

@@ -0,0 +1,68 @@
+"""
+Author: Michel Peltriaux
+Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
+Contact: michel.peltriaux@sgdnord.rlp.de
+Created on: 10.11.21
+
+"""
+import csv
+
+from codelist.models import KonovaCodeList
+from konova.management.commands.setup import BaseKonovaCommand
+
+
+class Command(BaseKonovaCommand):
+    help = "Exports a single list of internal codes. Codelist identifier must be provided as argument"
+    list_id = 'list_id'
+    save_to = 'save_to'
+
+    def add_arguments(self, parser):
+        try:
+            parser.add_argument(self.list_id, type=int)
+        except ValueError:
+            self._write_error("No list id provided")
+            exit(-1)
+        try:
+            parser.add_argument(self.save_to, type=str)
+        except ValueError:
+            self._write_error("No save to path given")
+            exit(-1)
+
+    def handle(self, *args, **options):
+        try:
+            list_id = options[self.list_id]
+            self.save_to = options[self.save_to]
+            self._write_warning("Fetching codes...")
+            code_list = KonovaCodeList.objects.get(
+                id=list_id,
+            )
+            codes = code_list.codes.filter(
+                is_selectable=True,
+            ).order_by(
+                "parent"
+            )
+            header_row = [
+                "Parent long name",
+                "Parent short name",
+                "Code long name",
+                "Code short name",
+                "Code ID",
+            ]
+            with open(self.save_to, 'w', newline='') as csvfile:
+                writer = csv.writer(
+                    csvfile,
+                    delimiter=' ',
+                    quoting=csv.QUOTE_MINIMAL,
+                )
+                writer.writerow(header_row)
+                for code in codes:
+                    if code.parent is not None:
+                        row = [code.parent.long_name, code.parent.short_name, code.long_name, code.short_name, code.id]
+                    else:
+                        row = ["", "", code.long_name, code.short_name, code.id]
+                    #row = f"{code.parent.long_name};{code.parent.short_name};{code.long_name};{code.short_name};{code.id}"
+                    writer.writerow(row)
+
+        except KeyboardInterrupt:
+            self._break_line()
+            exit(-1)

codelist/management/commands/update_codelist.py

@@ -23,7 +23,7 @@ bool_map = {
 
 
 class Command(BaseKonovaCommand):
-    help = "Performs test on collisions using the identifier generation"
+    help = "Updates internal codelist by external API"
 
     def handle(self, *args, **options):
         try: