Loaclization in WebGL?

Hey @MSachs !

It's actually pretty easy to do it.

It will save you some precious time, Easy to implement and almost no codding required.

Use the UnityWebRequest class to access the Assets

Here is an example using UnityWebRequest

 public IEnumerator GetFileCo(string _filename)
     {
         string fullPath = Path.Combine(Application.streamingAssetsPath, _filename);
         var uwrLocal = UnityWebRequest.Get("file:///" + fullPath);
 
         yield return uwrLocal.SendWebRequest();
         if (uwrLocal.isHttpError || uwrLocal.isNetworkError)
         {
             Debug.Log("Error while getting the file. Code: " + uwrLocal.error);
         }
         else
         {
             Debug.Log("File content: " + uwrLocal.downloadHandler.text);
         }
     }

Here is the trick. In your webgl index.html create a js function after unityInstance:

 function OnUnityReady() {
             unityInstance.SendMessage("WebRequestHandler", "SetLanguage", "en");
         };

The name of the function is the name that will be called in unity.
The first param of SendMessage is the script class name in Unity. Let's say it's WebRequestHandler.cs
The second param is the name of your method that will be executed. Lets say it's void SetLanguage(string _langID).
And the third param is the method's param. In our case it is _langID (You'll need to make a js function that will get the current language of your page and return a string with language code).

Now lets look what will happen inside WebGL. First of all create a new scene that will act as a splashScreen/loadingScreen and a script that will be called WebRequestHandler.cs. This script will be the bridge between website and unity.

Here how script will look inside:

 public string languageID;
 
 private void Start()
     {
         //calling OnUnityReady from JS script
         Application.ExternalCall("OnUnityReady");
 
         LoadScene();
     }

      //this is the method that is using in index.html to set language
     public void SetLanguage(string _langID)
     {
         languageID= _langID;
     }
 
     public void LoadScene()
     {
         if(languageID != "")
         {
            StartCoroutine(PrepareMainMenu());
         }
         else
         {
            languageID = defaultLanguageID;
            StartCoroutine(PrepareMainMenu());
         }
     }
 
     public Ienumerator PrepareMainMenu()
     {
         AsyncOperation loadAsync = SceneManager.LoadSceneAsync(yourSceneIndex);
         while (!loadAsync.isDone)
         {
             progressText.text = "INITIALIZING: " + (loadAsync.progress * 100) + "%";
 
             if (loadAsync.progress >= 0.9f)
             {
                 loadAsync.allowSceneActivation = true;
             }
             yield return null;
         }
     }

}

And basicaly that's all. All that remains is to tell to your localizationManager that language = languageID from WebRequestHandler