Fix default function for label colors at learn section

Author: sdelquin

apps/learn/migrations/0005_alter_label_color.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.2.13 on 2022-06-23 08:11
+
+import apps.learn.colors
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('learn', '0004_alter_label_color'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='label',
+            name='color',
+            field=models.CharField(default=apps.learn.colors.get_random_hex_color, max_length=8),
+        ),
+    ]

apps/learn/models.py

@@ -12,9 +12,7 @@ class Meta:
     name = models.CharField(max_length=120)
     slug = models.SlugField(max_length=120, unique=True)
     # Label color in hex mode
-    color = models.CharField(
-        max_length=8, default=colors.get_random_hex_color()
-    )
+    color = models.CharField(max_length=8, default=colors.get_random_hex_color)
 
     def __str__(self):
         return self.name