refactor: Use FloatField for Context.default_map_zoom

uvdat/core/migrations/0005_alter_context_default_map_zoom.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.1 on 2024-09-25 20:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('core', '0004_files_and_networks'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='context',
+            name='default_map_zoom',
+            field=models.FloatField(default=10),
+        ),
+    ]

uvdat/core/models/context.py

@@ -7,5 +7,5 @@
 class Context(models.Model):
     name = models.CharField(max_length=255, unique=True)
     default_map_center = geo_models.PointField()
-    default_map_zoom = models.IntegerField(default=10)
+    default_map_zoom = models.FloatField(default=10)
     datasets = models.ManyToManyField(Dataset, blank=True)