chore(resources): make case study link field non-nullable

Author: sudip-khanal

apps/resources/migrations/0003_alter_casestudy_link.py

@@ -0,0 +1,19 @@
+# Generated by Django 5.2.9 on 2026-03-25 05:53
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('resources', '0002_casestudy_link'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='casestudy',
+            name='link',
+            field=models.URLField(default='', verbose_name='External case study URL'),
+            preserve_default=False,
+        ),
+    ]

apps/resources/models.py

@@ -40,11 +40,7 @@ class CaseStudy(UserResource):
         on_delete=models.CASCADE,
         related_name="case_studies",
     )
-    link = models.URLField(
-        blank=True,
-        null=True,
-        verbose_name="External case study URL",
-    )
+    link = models.URLField(verbose_name="External case study URL")
 
     class Meta(UserResource.Meta):
         ordering = ["title"]

schema.graphql

@@ -38,7 +38,7 @@ type CaseStudyType {
   toolId: ID!
   content: String!
   coverImage: DjangoFileType
-  link: String
+  link: String!
 }
 
 type CaseStudyTypeOffsetPaginated {