converted all the server side strings to translation ready strings

config/locales/server.en.yml

@@ -10,6 +10,15 @@ en:
       too_short: "%{label} must be at least %{min} characters"
     none: "We couldn't find a wizard at that address."
     no_skip: "Wizard can't be skipped"
+    export:
+      error:
+        select_one: "Please select atleast one wizard"
+    import:
+      error:
+        no_file: "No file selected"
+        file_large: "File too large"
+        invalid_json: "File is not a valid json file"
+        no_valid_wizards: "File doesn't contain any valid wizards"
 
   site_settings:
     wizard_redirect_exclude_paths: "Routes excluded from wizard redirects."

controllers/transfer.rb

@@ -10,7 +10,7 @@ class CustomWizard::TransferController < ::ApplicationController
     wizards = params['wizards']
     wizard_objects = []
     if wizards.nil?
-      render json: {error: 'Please select atleast one wizard'}
+      render json: {error: I18n.t('wizard.export.error.select_one')}
       return
     end
 
@@ -33,17 +33,19 @@ class CustomWizard::TransferController < ::ApplicationController
   def import
     file = File.read(params['file'].tempfile)
     if file.nil?
-      render json: {error: "No file selected"}
+      render json: {error: I18n.t('wizard.import.error.no_file')}
       return
     end
     fileSize = file.size
     maxFileSize = 512 * 1024
     if maxFileSize < fileSize
-      render json: {error: "File too large"}
+      render json: {error: I18n.t('wizard.import.error.file_large')}
+      return
     end
 
     unless is_json file
-      render json: {error: "File is not a valid json file"}
+      render json: {error: I18n.t('wizard.import.error.invalid_json')}
+      return
     end
 
     jsonObject = JSON.parse file
@@ -64,7 +66,7 @@ class CustomWizard::TransferController < ::ApplicationController
     end
 
     if countValid == 0
-      render json: {error: "File doesn't contain any valid wizards"}
+      render json: {error: I18n.t('wizard.import.error.no_valid_wizards')}
     else
       render json: {success: success_ids, failed: failed_ids}
     end