Or you can try to use lexicon and namespaces (Read about Namespace and Lexicons skip Actions and Menus):
http://rtfm.modx.com/revolution/2.x/case-studies-and-tutorials/developing-an-extra-in-modx-revolution/developing-an-extra-in-modx-revolution,-part-ii#DevelopinganExtrainMODXRevolution%2CPartII-Namespaces
- Create Namespace, for example "myTraslations"
- Create Lexicon for English version
{namespace_path}/lexicon/en/contacts.inc.php
and insert there somthing like this:
<?php
$_lang['name'] = 'name';
Create Lexicon for Russian version (just to see how it works, because name is the same in english and german)
{namespace_path}/lexicon/ru/contacts.inc.php
and insert there somthing like this:
<?php
$_lang['name'] = 'Имя';
German:
{namespace_path}/lexicon/de/contacts.inc.php
and insert there somthing like this:
<?php
$_lang['name'] = 'Name';
- In your formit code you need to display the translation under placeholder like this:
<form action="/" method="post" name="video" class="ajax_form white-popup-block">
<input type="text" name="name" id="name" placeholder="[[%* name? &topic=`contacts` &namespace=`myTraslations` &language=`[[++cultureKey]]`]]" value="[[!+fi.name]]" />
...
</form>
In your contact you will see under name in en Name in de and Имя in ru language. Don't forget to set the language keys.
Here is also some explanation about the internationalization:
http://rtfm.modx.com/revolution/2.x/developing-in-modx/advanced-development/internationalization#Internationalization-LexiconsviaTag%28incontent%2Cchunks%2Ctemplatesetc%29
