Set default area to -1

app/migrations/0047_alter_mountainrange_area.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.5 on 2021-11-29 04:05
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('app', '0046_alter_keyword_mother'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='mountainrange',
+            name='area',
+            field=models.FloatField(default=-1),
+        ),
+    ]

app/models.py

@@ -103,7 +103,7 @@ class MountainRange(models.Model):
     latitude = models.CharField(blank=True, null=True, max_length=128)
     longitude = models.CharField(blank=True, null=True, max_length=128)
     orogeny = models.TextField(blank=True, null=True)
-    area = models.FloatField(blank=True, null=True)
+    area = models.FloatField(default=-1)
     GMBA_v1_id = models.CharField(blank=True, null=True, max_length=25)
     peak_elevation = models.TextField(blank=True, null=True)
     peak_name = models.TextField(blank=True, null=True)