Change WidgetUser id_num from integer to string of integers

widget_alipins/homepage/migrations/0005_alter_widgetuser_id_num.py

+# Generated by Django 4.0.3 on 2022-04-02 10:10
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('homepage', '0004_widgetuser_department'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='widgetuser',
+            name='id_num',
+            field=models.CharField(max_length=7, validators=[django.core.validators.RegexValidator('^\\d+$')]),
+        ),
+    ]

widget_alipins/homepage/models.py

-from django.core.validators import MaxValueValidator
+from django.core.validators import RegexValidator
 from django.db import models
 
 
@@ -14,9 +14,10 @@ class WidgetUser(models.Model):
     first_name = models.CharField(max_length=50)
     middle_name = models.CharField(max_length=50)
     last_name = models.CharField(max_length=50)
-    id_num = models.PositiveIntegerField(validators=[MaxValueValidator(9999999)])
-    email = models.EmailField(max_length = 200)
+    # check if id_num string contains digits only
+    id_num = models.CharField(max_length=7, validators=[RegexValidator(r'^\d+$')])
+    email = models.EmailField(max_length=200)
     department = models.ForeignKey(Department, on_delete=models.CASCADE, null=True)
 
     def __str__(self):
-        return self.email
+        return self.id_num
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