fix(CertificateAuthority): add missing 'caref' field #873

This commit fixes an issue where the object relation system expected a 'caref' value to determine which CAs would impacted by deletions. However, since this model did not have this field it was simply ignored and considered all CAs as impacted by deletions.

Author: jaredhendrickson13

pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Models/CertificateAuthority.inc

@@ -5,6 +5,7 @@ namespace RESTAPI\Models;
 use RESTAPI\Core\Model;
 use RESTAPI\Fields\Base64Field;
 use RESTAPI\Fields\BooleanField;
+use RESTAPI\Fields\ForeignModelField;
 use RESTAPI\Fields\IntegerField;
 use RESTAPI\Fields\StringField;
 use RESTAPI\Fields\UIDField;
@@ -20,6 +21,7 @@ use RESTAPI\Validators\X509Validator;
 class CertificateAuthority extends Model {
     public StringField $descr;
     public UIDField $refid;
+    public ForeignModelField $caref;
     public BooleanField $trust;
     public BooleanField $randomserial;
     public IntegerField $serial;
@@ -42,6 +44,13 @@ class CertificateAuthority extends Model {
             help_text: 'The unique ID assigned to this certificate authority for internal system use. This value is ' .
                 'generated by this system and cannot be changed.',
         );
+        $this->caref = new ForeignModelField(
+            model_name: 'CertificateAuthority',
+            model_field: 'refid',
+            allow_null: true,
+            read_only: true,
+            help_text: 'The reference ID of the assigned root certificate authority.',
+        );
         $this->trust = new BooleanField(
             default: false,
             indicates_true: 'enabled',