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[WCM] [The Book, Translations] added doc for translation domain cascading #2825

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9 changes: 9 additions & 0 deletions book/translation.rst
Original file line number Diff line number Diff line change
Expand Up @@ -493,6 +493,15 @@ you must specify the domain as the third argument of ``trans()``::
Symfony2 will now look for the message in the ``admin`` domain of the user's
locale.

In some cases, you may need a fallback mechanism: you can also provide an
array of domains instead of a simple string:
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:: instead of :


$this->get('translator')->trans('Do something', array(), array('specialized', 'messages', 'last_resort'));
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I'd appreciate some line wrapping:

    $this->get('translator')->trans('Do something', array(), array(
        'specialized',
        'messages',
        'last_resort',
    ));

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I prefer

$translator->trans(
    'Do something',
    array(),
    array('specialized', 'messages', 'last_resort')
);


At first, the translator will look for the message in the ``specialized``
domain. Without result, it will then look in the ``messages`` domain, and
so on…

.. index::
single: Translations; User's locale

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