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This page explains in four easy steps the general procedure that is to be followed in making your module or app translatable. We assume that you have read and are familiar with the basic aspects of internationalization.

Step 1: Create a message file

For your app or module, create a message file named <bundle-name>_<locale>.properties and save it to the /src/main/resources/<module-name>/i18n/ directory in the module structure. If the folder doesn't exist, create it. For your app. Every app should have its own message bundle. So if your module deploys two apps, create two bundles.

Make sure that the filename corresponds to the following pattern:
<bundle-name>_<locale>.properties 

Step 2: Add keys and translations to the file

Include the message keys and the translations in the .properties file. Below is an example pattern for an app named foobar-app with the subapps browser and foobar (a detail item editor). You may want to use this file as a template .properties file for your own custom content app.

# App name and icon
foobar-app.app.label=Foobar app
foobar-app.app.icon=icon-items # Action bar sections
foobar-app.browser.actionbar.sections.root.label=Foobar
foobar-app.browser.actionbar.sections.folder.label=Folder
foobar-app.browser.actionbar.sections.foobar.label=Product
foobar-app.browser.actionbar.sections.preview.label=Preview # Actions
foobar-app.browser.actions.addProduct.label=Add foobar
#foobar-app.browser.actions.addFolder.label=Add folder
#foobar-app.browser.actions.editFolder.label=Rename folder
#foobar-app.browser.actions.deleteFolder.label=Delete folder
foobar-app.browser.actions.editProduct.label=Edit foobar
foobar-app.browser.actions.deleteProduct.label=Delete foobar
#foobar-app.detail.actions.cancel.label=Cancel
#foobar-app.detail.actions.save.label=Save changes # Editor foobar-app.label=Edit foobar
foobar-app.description=Define the foobar information # Edit dialog
foobar-app.foobar.label=Foobar
foobar-app.foobar.jcrName.label=Foobar name
foobar-app.foobar.title.label=Foobar title

Before saving your .properties file, make sure that the <locale> part of the filename matches the language of the translation labels.

Step 3: Revise the messages in your bundle

For the translation to work, you must add key/value pairs for both the autogenerated keys and custom defined keys. For some standard components or sub elements such as the buttons "Cancel" and "Save", you may rely on the already existing translations in message bundles of other Magnolia modules. In the above template code, such translations are on the commented-out lines 11, 12, 13, 16, and 17. (For further information about reusing existing keys please read Generic i18n keys.)

Step 4: Check the outcome in the UI

Check the messages for all your dialogs and other elements of your app or module in the UI. As of Magnolia 5.4.7+ any change made to a *.properties will be applied and visible instantly. In pre-5.4.7 versions of Magnolia the messages have to be reloaded manually in the running instance. This can be done at the top of the DEV > DEV TOOLS app in AdminCentral.