Replacing deprecated methods for Magento_Email module.

Author: tiagosampaio

app/code/Magento/Email/Controller/Adminhtml/Email/Template/Delete.php

@@ -22,21 +22,21 @@ public function execute()
                 if (count($template->getSystemConfigPathsWhereCurrentlyUsed()) == 0) {
                     $template->delete();
                     // display success message
-                    $this->messageManager->addSuccess(__('You deleted the email template.'));
+                    $this->messageManager->addSuccessMessage(__('You deleted the email template.'));
                     $this->_objectManager->get(\Magento\Framework\App\ReinitableConfig::class)->reinit();
                     // go to grid
                     $this->_redirect('adminhtml/*/');
                     return;
                 }
                 // display error  message
-                $this->messageManager->addError(__('The email template is currently being used.'));
+                $this->messageManager->addErrorMessage(__('The email template is currently being used.'));
                 // redirect to edit form
                 $this->_redirect('adminhtml/*/edit', ['id' => $template->getId()]);
                 return;
             } catch (\Magento\Framework\Exception\LocalizedException $e) {
-                $this->messageManager->addError($e->getMessage());
+                $this->messageManager->addErrorMessage($e->getMessage());
             } catch (\Exception $e) {
-                $this->messageManager->addError(
+                $this->messageManager->addErrorMessage(
                     __('We can\'t delete email template data right now. Please review log and try again.')
                 );
                 $this->_objectManager->get(\Psr\Log\LoggerInterface::class)->critical($e);
@@ -52,7 +52,7 @@ public function execute()
             }
         }
         // display error message
-        $this->messageManager->addError(__('We can\'t find an email template to delete.'));
+        $this->messageManager->addErrorMessage(__('We can\'t find an email template to delete.'));
         // go to grid
         $this->_redirect('adminhtml/*/');
     }

app/code/Magento/Email/Controller/Adminhtml/Email/Template/Preview.php

@@ -21,7 +21,9 @@ public function execute()
             $this->_view->renderLayout();
             $this->getResponse()->setHeader('Content-Security-Policy', "script-src 'none'");
         } catch (\Exception $e) {
-            $this->messageManager->addError(__('An error occurred. The email template can not be opened for preview.'));
+            $this->messageManager->addErrorMessage(
+                __('An error occurred. The email template can not be opened for preview.')
+            );
             $this->_redirect('adminhtml/*/');
         }
     }

app/code/Magento/Email/Controller/Adminhtml/Email/Template/Save.php

@@ -22,7 +22,7 @@ public function execute()
 
         $template = $this->_initTemplate('id');
         if (!$template->getId() && $id) {
-            $this->messageManager->addError(__('This email template no longer exists.'));
+            $this->messageManager->addErrorMessage(__('This email template no longer exists.'));
             $this->_redirect('adminhtml/*/');
             return;
         }
@@ -55,7 +55,7 @@ public function execute()
 
             $template->save();
             $this->_objectManager->get(\Magento\Backend\Model\Session::class)->setFormData(false);
-            $this->messageManager->addSuccess(__('You saved the email template.'));
+            $this->messageManager->addSuccessMessage(__('You saved the email template.'));
             $this->_redirect('adminhtml/*');
         } catch (\Exception $e) {
             $this->_objectManager->get(
@@ -64,7 +64,7 @@ public function execute()
                 'email_template_form_data',
                 $request->getParams()
             );
-            $this->messageManager->addError($e->getMessage());
+            $this->messageManager->addErrorMessage($e->getMessage());
             $this->_forward('new');
         }
     }