Persons constraint

project/main/models/person.py

@@ -1,10 +1,26 @@
+from django.core.validators import MaxLengthValidator, MinLengthValidator
 from django.db import models
 
 
 class Person(models.Model):
-    name = models.CharField(max_length=100)
-    address = models.CharField(max_length=100)
-    city = models.CharField(max_length=100)
+    name = models.CharField(
+        max_length=100,
+        blank=False,
+        null=False,
+        validators=[MinLengthValidator(2), MaxLengthValidator(100)],
+    )
+    address = models.CharField(
+        max_length=100,
+        blank=False,
+        null=False,
+        validators=[MinLengthValidator(2), MaxLengthValidator(100)],
+    )
+    city = models.CharField(
+        max_length=100,
+        blank=False,
+        null=False,
+        validators=[MinLengthValidator(2), MaxLengthValidator(100)],
+    )
 
     class Meta:
         db_table = "persons"