How can I create a map with all i18n-messages in Grails

Question

I need this to render a part of it in a controller like:

class MessageController {

  def index = {

    def messageMap = listAlli18nMessages() // the questi         


        

Answer 1

Finally I found an answer - override the default Grails messageSource:

class ExtendedPluginAwareResourceBundleMessageSource extends PluginAwareResourceBundleMessageSource {
    Map<String, String> listMessageCodes(Locale locale) {
        Properties properties = getMergedProperties(locale).properties
        Properties pluginProperties = getMergedPluginProperties(locale).properties
        return properties.plus(pluginProperties)
    }
}

In grails-app/conf/spring/resources.groovy:

beans = {
    messageSource(ExtendedPluginAwareResourceBundleMessageSource)  {
        basenames = "WEB-INF/grails-app/i18n/messages"
    }
}

Corresponding controller code:

class MessageController {
    def messageSource

    def index = {
        def messageMap = messageSource.listMessageCodes(request.locale)

        render (contentType: "text/xml") {
            messageMap {key, message ->
                ..
            }
        }
    }
}

Answer 2

The approach you are taking doesn't look to be possible based on the API docs for PluginAwareResourceBundleMessageSource. This will get you close to a solution

class MessageController {
    def messageSource

    def index = {
        Locale locale = new Locale('en');
        List codes = ['default.paginate.prev','default.paginate.next','default.boolean.true','default.boolean.false']
        def messageMap =  messagesForCodes(codes,locale)
        render (contentType: "text/xml") {
             messageMap {key, message ->
                ..
             }
        }
    }

    private def messagesForCodes(codes, locale){
        Map messages = [:]
        codes.each{code->
            messages[code] = messageSource.getMessage(code,null,locale)
        }
        messages
    }
}