Initial

backend/app/models/audiofile.py

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+from django.conf import settings
+from django.db import models
+from django.db.models.signals import post_delete
+from django.dispatch import receiver
+
+import os
+import uuid
+from pathlib import Path
+
+from common.form.audio_file import AudioFileField
+
+
+def overwrite_audio(instance: 'Audiofile', filename: str):
+    if instance.path.is_file():
+        os.remove(instance.path)
+    return instance.url
+
+
+class Audiofile(models.Model):
+    key = models.UUIDField('ID', primary_key=True, default=uuid.uuid4,
+                           editable=False)
+    audio = AudioFileField('Audio', upload_to=overwrite_audio)
+    desc = models.CharField('Beschreibung', max_length=200)
+    created = models.DateTimeField('Erstellt', auto_now_add=True)
+
+    class Meta:
+        verbose_name = 'Audiodatei'
+        verbose_name_plural = 'Audiodateien'
+        ordering = ('-created',)
+
+    def __str__(self) -> str:
+        return self.desc
+
+    @property
+    def path(self) -> Path:
+        return settings.MEDIA_ROOT / 'audio' / f'{self.pk}.mp3'
+
+    @property
+    def url(self) -> str:
+        return f'audio/{self.pk}.mp3'
+
+
+@receiver(post_delete, sender=Audiofile)
+def on_delete_Audiofile(sender, instance: 'Audiofile', using, **kwargs):
+    os.remove(instance.path)