fix(destinations): sort properly by preferred name

tjdests/apps/authentication/migrations/0012_user_preferred_name.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.12 on 2022-02-09 22:04
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("authentication", "0011_user_use_nickname"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="user",
+            name="preferred_name",
+            field=models.CharField(blank=True, max_length=30),
+        ),
+    ]

tjdests/apps/authentication/models.py

@@ -40,9 +40,14 @@ class User(AbstractUser):
 
     last_modified = models.DateTimeField(auto_now=True)
 
-    @property
+    preferred_name = models.CharField(max_length=30, blank=True)
-    def preferred_name(self):
+
+    def get_preferred_name(self):
         return self.nickname if self.nickname and self.use_nickname else self.first_name
 
     def __str__(self):
         return f"{self.preferred_name} {self.last_name}"
+
+    def save(self, *args, **kwargs):
+        self.preferred_name = self.get_preferred_name()
+        super().save(*args, **kwargs)

tjdests/apps/destinations/views.py

@@ -27,7 +27,9 @@ class StudentDestinationListView(
         else:
             queryset = User.objects.filter(publish_data=True)
 
-        queryset = queryset.filter(is_senior=True).order_by("last_name", "first_name")
+        queryset = queryset.filter(is_senior=True).order_by(
+            "last_name", "preferred_name"
+        )
 
         college_id: Optional[str] = self.request.GET.get("college", None)
         if college_id is not None: