CMULTI is a thing, and therefore a max prefix length of 5 cannot be a thing

assets/migrations/0008_auto_20191205_1937_squashed_0009_auto_20191205_2041.py

@@ -1,8 +1,7 @@
-# Generated by Django 2.0.13 on 2019-12-05 19:37
+# Generated by Django 2.0.13 on 2019-12-05 20:42
 
-import re
 from django.db import migrations, models
-import django.db.migrations
+import django.db.migrations.operations.special
 
 def forwards(apps, schema_editor):
     AssetModel = apps.get_model('assets', 'Asset')
@@ -20,8 +19,15 @@ def forwards(apps, schema_editor):
 
         row.save(update_fields=['asset_id', 'asset_id_prefix', 'asset_id_number'])
 
+# Functions from the following migrations need manual copying.
+# Move them and any dependencies into this file, then update the
+# RunPython operations to refer to the local versions:
+# assets.migrations.0008_auto_20191205_1937
+
 class Migration(migrations.Migration):
 
+    replaces = [('assets', '0008_auto_20191205_1937'), ('assets', '0009_auto_20191205_2041')]
+
     dependencies = [
         ('assets', '0007_auto_20190108_0202_squashed_0014_auto_20191017_2052'),
     ]
@@ -45,4 +51,14 @@ class Migration(migrations.Migration):
             name='asset',
             options={'ordering': ['asset_id_prefix', 'asset_id_number'], 'permissions': (('asset_finance', 'Can see financial data for assets'), ('view_asset', 'Can view an asset'))},
         ),
+        migrations.AlterField(
+            model_name='asset',
+            name='asset_id',
+            field=models.CharField(max_length=15, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='asset',
+            name='asset_id_prefix',
+            field=models.CharField(default='', max_length=8),
+        ),
     ]

assets/models.py

@@ -64,7 +64,7 @@ class Asset(models.Model):
         )
 
     parent = models.ForeignKey(to='self', related_name='asset_parent', blank=True, null=True, on_delete=models.SET_NULL)
-    asset_id = models.CharField(max_length=10, unique=True)
+    asset_id = models.CharField(max_length=15, unique=True)
     description = models.CharField(max_length=120)
     category = models.ForeignKey(to=AssetCategory, on_delete=models.CASCADE)
     status = models.ForeignKey(to=AssetStatus, on_delete=models.CASCADE)
@@ -88,7 +88,7 @@ class Asset(models.Model):
 
     # Hidden asset_id components
     # For example, if asset_id was "C1001" then asset_id_prefix would be "C" and number "1001"
-    asset_id_prefix = models.CharField(max_length=5, default="")
+    asset_id_prefix = models.CharField(max_length=8, default="")
     asset_id_number = models.IntegerField(default=1)
 
     def get_available_asset_id(wanted_prefix=""):