add external links

hub/services/models.py

@@ -205,3 +205,33 @@ class Lead(models.Model):
 
     def __str__(self):
         return f"{self.name} - {self.company} ({self.service})"
+
+
+class ExternalLink(models.Model):
+    service = models.ForeignKey(
+        Service, on_delete=models.CASCADE, related_name="external_links"
+    )
+    url = models.URLField()
+    description = models.CharField(max_length=200)
+    order = models.IntegerField(default=0)
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        ordering = ["order", "description"]
+        verbose_name = "External Link"
+        verbose_name_plural = "External Links"
+
+    def __str__(self):
+        return f"{self.description} ({self.url})"
+
+    def clean(self):
+        from django.core.validators import URLValidator
+        from django.core.exceptions import ValidationError
+
+        # Validate URL
+        validate = URLValidator()
+        try:
+            validate(self.url)
+        except ValidationError:
+            raise ValidationError({"url": "Enter a valid URL."})