Issue #3301006 by LOBsTerr: Replace custom route access check with GroupInstalledContentAccessCheck

ginvite.routing.yml

@@ -4,7 +4,7 @@ ginvite.invitation.accept:
     _controller: '\Drupal\ginvite\Controller\InvitationOperations::accept'
     _title: 'Accept invitation and join group'
   requirements:
-    _custom_access: '\Drupal\ginvite\Controller\InvitationOperations::checkAccess'
+    _group_installed_content: 'group_invitation'
   options:
     parameters:
       group_relationship:
@@ -16,7 +16,7 @@ ginvite.invitation.decline:
     _controller: '\Drupal\ginvite\Controller\InvitationOperations::decline'
     _title: 'Decline invitation'
   requirements:
-    _custom_access: '\Drupal\ginvite\Controller\InvitationOperations::checkAccess'
+    _group_installed_content: 'group_invitation'
   options:
     parameters:
       group_relationship:

src/Controller/InvitationOperations.php

@@ -163,29 +163,6 @@ class InvitationOperations extends ControllerBase {
     return $this->redirect('user.page');
   }
 
-  /**
-   * Checks if this current has access to update invitation.
-   *
-   * @param \Drupal\group\Entity\GroupRelationshipInterface $group_relationship
-   *   Invitation entity.
-   *
-   * @return \Drupal\Core\Access\AccessResult
-   *   Access check result.
-   */
-  public function checkAccess(GroupRelationshipInterface $group_relationship) {
-    $invited_user_id = $group_relationship->getEntityId();
-    $group = $group_relationship->getGroup();
-    $membership = $this->membershipLoader->load($group, $this->currentUser());
-    $current_state = $group_relationship->get('invitation_status')->value;
-
-    // Only allow user accept/decline own invitations.
-    if ($invited_user_id == $this->currentUser()->id() && !$membership && (int) $current_state === GroupInvitation::INVITATION_PENDING) {
-      return AccessResult::allowed();
-    }
-
-    return AccessResult::forbidden();
-  }
-
   /**
    * Renders title for the group invite member route.
    *