Complete rewrite by OpenCode

dokumente/models.py

@@ -40,14 +40,14 @@ class Thema(models.Model):
 class Dokument(models.Model):
     nummer = models.CharField(max_length=50, primary_key=True)
     dokumententyp = models.ForeignKey(Dokumententyp, on_delete=models.PROTECT)
-    name = models.CharField(max_length=255)
+    name = models.CharField(max_length=255, db_index=True)
     autoren = models.ManyToManyField(Person, related_name='verfasste_dokumente')
     pruefende = models.ManyToManyField(Person, related_name='gepruefte_dokumente')
-    gueltigkeit_von = models.DateField(null=True, blank=True)
-    gueltigkeit_bis = models.DateField(null=True, blank=True)
+    gueltigkeit_von = models.DateField(null=True, blank=True, db_index=True)
+    gueltigkeit_bis = models.DateField(null=True, blank=True, db_index=True)
     signatur_cso = models.CharField(max_length=255, blank=True)
     anhaenge = models.TextField(blank=True)
-    aktiv = models.BooleanField(blank=True)
+    aktiv = models.BooleanField()
 
     def __str__(self):
         return f"{self.nummer} – {self.name}"
@@ -57,14 +57,14 @@ class Dokument(models.Model):
         verbose_name="Dokument"
 
 class Vorgabe(models.Model):
-    order = models.IntegerField()
-    nummer = models.IntegerField()
+    order = models.IntegerField(db_index=True)
+    nummer = models.IntegerField(db_index=True)
     dokument = models.ForeignKey(Dokument, on_delete=models.CASCADE, related_name='vorgaben')
     thema = models.ForeignKey(Thema, on_delete=models.PROTECT, blank=False)
-    titel = models.CharField(max_length=255)
+    titel = models.CharField(max_length=255, db_index=True)
     referenzen = models.ManyToManyField(Referenz, blank=True)
-    gueltigkeit_von = models.DateField()
-    gueltigkeit_bis = models.DateField(blank=True,null=True)
+    gueltigkeit_von = models.DateField(db_index=True)
+    gueltigkeit_bis = models.DateField(blank=True,null=True, db_index=True)
     stichworte = models.ManyToManyField(Stichwort, blank=True)
     relevanz = models.ManyToManyField(Rolle,blank=True)
 
@@ -206,6 +206,12 @@ class Vorgabe(models.Model):
     class Meta:
         verbose_name_plural="Vorgaben"
         ordering = ['order']
+        constraints = [
+            models.UniqueConstraint(
+                fields=['dokument', 'thema', 'nummer', 'gueltigkeit_von'],
+                name='unique_vorgabe_active_period'
+            ),
+        ]
 
 class VorgabeLangtext(Textabschnitt):
     abschnitt=models.ForeignKey(Vorgabe,on_delete=models.CASCADE)