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Add own date Twig filter override to translate dates automatically based on the locale

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The Twig `date` filter does not translate dates automatically for us.
This translates dates based on the locale set.
This commit is contained in:
Flavio Copes
2016-03-16 15:35:06 +01:00
parent ca6977d61f
commit 46ba290004
1 changed files with 62 additions and 0 deletions
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62
system/src/Grav/Common/Twig/TwigExtension.php
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@@ -63,6 +63,7 @@ class TwigExtension extends \Twig_Extension
new \Twig_SimpleFilter('*ize', [$this, 'inflectorFilter']),
new \Twig_SimpleFilter('absolute_url', [$this, 'absoluteUrlFilter']),
new \Twig_SimpleFilter('contains', [$this, 'containsFilter']),
new \Twig_SimpleFilter('date', [$this, 'dateFilter'], array('needs_environment' => true)),
new \Twig_SimpleFilter('defined', [$this, 'definedDefaultFilter']),
new \Twig_SimpleFilter('ends_with', [$this, 'endsWithFilter']),
new \Twig_SimpleFilter('fieldName', [$this, 'fieldNameFilter']),
@@ -317,6 +318,67 @@ class TwigExtension extends \Twig_Extension
return (strpos($haystack, $needle) !== false);
}
/**
* Overrides the built-in date filter to output dates in the set locale
*
* @param TwigEnvironment $env A Twig_Environment instance
* @param DateTime|DateTimeInterface|DateInterval|string $date A date
* @param string|null $format The target format, null to use the default
* @param DateTimeZone|string|null|false $timezone The target timezone, null to use the default, false to leave unchanged
*
* @return string The formatted date
*/
function dateFilter(TwigEnvironment $env, $date, $format = null, $timezone = null)
{
$this->grav->setLocale();
if (null === $format) {
$formats = $env->getExtension('core')->getDateFormat();
$format = $date instanceof DateInterval ? $formats[1] : $formats[0];
}
if ($date instanceof DateInterval) {
return strftime($this->dateFormatToStrftime($format), $date->getTimestamp());
}
return strftime($this->dateFormatToStrftime($format), \twig_date_converter($env, $date, $timezone)->getTimestamp());
}
/**
* Convert a date format to a strftime format
*
* Timezone conversion is done for unix. Windows users must exchange %z and %Z.
*
* Unsupported date formats : S, n, t, L, B, G, u, e, I, P, Z, c, r
* Unsupported strftime formats : %U, %W, %C, %g, %r, %R, %T, %X, %c, %D, %F, %x
*
* @param string $dateFormat a date format
* @return string
*
* @author https://secure.php.net/manual/it/function.strftime.php#96424
*/
public function dateFormatToStrftime($dateFormat)
{
$caracs = array(
// Day - no strf eq : S
'd' => '%d', 'D' => '%a', 'j' => '%e', 'l' => '%A', 'N' => '%u', 'w' => '%w', 'z' => '%j',
// Week - no date eq : %U, %W
'W' => '%V',
// Month - no strf eq : n, t
'F' => '%B', 'm' => '%m', 'M' => '%b',
// Year - no strf eq : L; no date eq : %C, %g
'o' => '%G', 'Y' => '%Y', 'y' => '%y',
// Time - no strf eq : B, G, u; no date eq : %r, %R, %T, %X
'a' => '%P', 'A' => '%p', 'g' => '%l', 'h' => '%I', 'H' => '%H', 'i' => '%M', 's' => '%S',
// Timezone - no strf eq : e, I, P, Z
'O' => '%z', 'T' => '%Z',
// Full Date / Time - no strf eq : c, r; no date eq : %c, %D, %F, %x
'U' => '%s'
);
return strtr((string)$dateFormat, $caracs);
}
/**
* displays a facebook style 'time ago' formatted date/time
*