#7 New forms WIP

* adds saving functionality for new intervention form
* refactors new identifier generating, so a pre-generated identifier from a new element form will be checked again before saving
* adds css fixes for disturbing input field:focus bugs
* adds missing csrf token to new collapsible form
* adds/updates translations
* introduces mark_as_deleted as only marking instead of using delete() which will really delete from the db

intervention/models.py

@@ -260,14 +260,41 @@ class Intervention(BaseObject):
             self.save()
 
     def save(self, *args, **kwargs):
+        """ Custom save functionality
+
+        Performs some pre-save checks:
+            1. Checking for existing identifiers
+
+        Args:
+            *args ():
+            **kwargs ():
+
+        Returns:
+
+        """
         if self.identifier is None or len(self.identifier) == 0:
-            # Create new identifier
-            new_id = self._generate_new_identifier()
-            while Intervention.objects.filter(identifier=new_id).exists():
-                new_id = self._generate_new_identifier()
-            self.identifier = new_id
+            # No identifier given
+            self.identifier = self._generate_new_identifier()
+
+        # Before saving, make sure the set identifier is not used, yet
+        while Intervention.objects.filter(identifier=self.identifier).exists():
+            self.identifier = self._generate_new_identifier()
         super().save(*args, **kwargs)
 
+    def delete(self, using=None, keep_parents=False):
+        to_delete = [
+            self.legal,
+            self.responsible,
+            self.geometry,
+            self.log.all()
+        ]
+        for entry in to_delete:
+            try:
+                entry.delete()
+            except AttributeError:
+                pass
+        super().delete(using, keep_parents)
+
     def quality_check(self) -> list:
         """ Quality check