Contributing Translations
Some Symfony components ship messages that are shown to end users, such as validation errors ("This value is not a valid timezone."). These messages are translated into dozens of languages by the community, and new messages are added regularly, so there are always missing translations you can help with.
Tip
Quick reference
Translations live in the symfony/symfony repository as XLIFF files
(*.<locale>.xlf). Find the messages missing in your language, translate
the <target> tags, and open a pull request against the oldest
maintained branch.
How to Contribute a Translation
Imagine you speak English and Swedish and want to add the missing Swedish translations.
Step 1. Translations are always contributed to the oldest maintained branch (check the Symfony Releases page). Browse or check out that branch of the symfony/symfony repository.
Step 2. Translation files use the XLIFF format and live in these directories:
src/Symfony/Component/Form/Resources/translations/src/Symfony/Component/Security/Core/Resources/translations/src/Symfony/Component/Validator/Resources/translations/
For Swedish, look at the *.sv.xlf files. If the file for your language
doesn't exist yet, create it by copying the English one (e.g. validators.en.xlf).
Tip
The Symfony Translations Status site shows, per language, which translations are still missing.
Step 3. Compare your language file with the English one and add the missing
messages. Each entry keeps the English <source> and translates the
<target>:
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<trans-unit id="94">
<source>This value should be between {{ min }} and {{ max }}.</source>
<target>Detta värde bör vara mellan {{ min }} och {{ max }}.</target>
</trans-unit>Step 4. Open a pull request against the symfony/symfony repository. The process is the same as for code or docs.