fix

widget_group3/widget_group3/migrations/0003_alter_widgetuser_id_num.py

+# Generated by Django 4.0.3 on 2022-04-08 06:12
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('widget_group3', '0002_alter_widgetuser_first_name'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='widgetuser',
+            name='id_num',
+            field=models.CharField(max_length=7, validators=[django.core.validators.RegexValidator('^\\d{1,10}$')]),
+        ),
+    ]

widget_group3/widget_group3/models.py

 from django.db import models
 from django.urls import reverse
+from django.core.validators import RegexValidator
     
 # Department used for widget user
 class Department(models.Model):
@@ -10,7 +11,7 @@ class Department(models.Model):
         return '{}, {}'.format(self.dept_name, self.home_unit)
 
 class WidgetUser(models.Model):
-    id_num = models.IntegerField()
+    id_num = models.CharField(max_length=7, validators=[RegexValidator(r'^\d{1,10}$')])
     first_name = models.CharField(max_length=90)
     middle_name = models.CharField(max_length=100)
     last_name = models.CharField(max_length=100)