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    <p>I recently struggled with the same problem.</p> <p>Finding a clean way to do this was quite a challenge - most alternatives were either..</p> <p>1) Duplicate your code base per locale (WTH)</p> <p>2) Download localized files overriding each of your components (Maintenance hell? What about the poor translators?)</p> <p>3) Use/generate a static file containing translations and refer to it (All languages are downloaded? Extra build step to generate it? How do you keep them in synch?)</p> <p>I tried to get the best of all worlds and ended up with a utility class responsible for:</p> <p>1) Loading the ExtJS translation files (which basically apply overrides to extjs base components)</p> <p>2) Loading a locale specific property resourcebundle (specifying which locale to load) from the server.</p> <p>3) Prototyping String with a translate() method which queries the loaded store (containing the message bundle from the server) and returns the translation based on the value of the string.</p> <p>This is the gist of things:</p> <p>Bundle &amp; prototyping: </p> <pre><code>localeStore.load({ callback : function(records, operation, success) { // Define translation function (NB! Must be defined before any components which want to use it.) function translate() { var record = localeStore.getById(this.valueOf()) ; if(record === null) { alert('Missing translation for: ' + this.valueOf()); // Key is not found in the corresponding messages_&lt;locale&gt;.properties file. return this.valueOf(); // Return key name as placeholder } else { var value = record.get('value'); } return value; } String.prototype.translate = translate; callback.call(); // call back to caller(app.js / Ext.Application), loading rest of application } }); </code></pre> <p>As an example from a view:</p> <pre><code>this.copyButton = Ext.create('Ext.button.Button', { disabled: true, text: 'DOCUMENT_LIBRARY_MENU_COPYTO_BUTTON'.translate(), action: 'openCopyDialog' }); </code></pre> <p>Bundle on the server (mesages_en.properties): DOCUMENT_LIBRARY_MENU_COPYTO_BUTTON=Copy file etc..</p> <p>Pros: </p> <ul> <li>No-fuss code, 'Your_key'.translate() makes it easy to read and aware that this is a localized string</li> <li>None/little maintenance overhead (Keeping an override file for each locale? Jesus..)</li> <li>You only load the locale you need - not the whole shabang.</li> <li>If you really want to, you could even have your own translation for the ExtJS locale files in the same bundle.</li> <li>You could write unit tests to ensure that all bundles contain the same keys, thus avoiding orphaned translations later</li> </ul> <p>Cons:</p> <ul> <li>Synchronous - the store must be loaded before your main app starts. I solved this by adding a callback from the utility class which was called once all texts were loaded.</li> <li>No real-time population of texts.. though I didn't want to make my users overload the server either :P</li> </ul> <p>So far my approach has worked out pretty well for my requirements. Site load isn't noticeably slower and the bundles (containing ~200 keys/values per bundle) measure out at ~10kb during load.</p>
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    1. POExtJS MVC, dynamic loading and i18n
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    1. USPierre Arlaud
    1. USJaySee
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    1. COThanx JaySee, nice approach that prototype, makes the code a pleasure to read and still provide a simple translation approach!
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      1. USPaul
    2. COThanks for elegant solution. If use [Ext.ux.Cache](https://market.sencha.com/extensions/ext-ux-cache) that Cons can changed to Pros
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      1. USPencroff
 

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