Create DateExtension.php

src/Extensions/DateExtension.php

@@ -0,0 +1,86 @@
+<?php
+namespace Raizdev\Twig\Extensions;
+
+use Symfony\Component\Translation\IdentityTranslator;
+use Symfony\Component\Translation\TranslatorInterface;
+use Twig\Environment;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFilter;
+
+/**
+ * @author Robin van der Vleuten <[email protected]>
+ */
+class DateExtension extends AbstractExtension
+{
+    public static $units = [
+        'y' => 'year',
+        'm' => 'month',
+        'd' => 'day',
+        'h' => 'hour',
+        'i' => 'minute',
+        's' => 'second',
+    ];
+
+    private $translator;
+
+    public function __construct(TranslatorInterface $translator = null)
+    {
+        // Ignore the IdentityTranslator, otherwise the parameters won't be replaced properly
+        if ($translator instanceof IdentityTranslator) {
+            $translator = null;
+        }
+
+        $this->translator = $translator;
+    }
+
+    public function getFilters()
+    {
+        return [
+            new TwigFilter('time_diff', [$this, 'diff'], ['needs_environment' => true]),
+        ];
+    }
+
+    /**
+     * Filters for converting dates to a time ago string like Facebook and Twitter has.
+     *
+     * @param string|DateTime $date a string or DateTime object to convert
+     * @param string|DateTime $now  A string or DateTime object to compare with. If none given, the current time will be used.
+     *
+     * @return string the converted time
+     */
+    public function diff(Environment $env, $date, $now = null)
+    {
+        // Convert both dates to DateTime instances.
+        $date = twig_date_converter($env, $date);
+        $now = twig_date_converter($env, $now);
+
+        // Get the difference between the two DateTime objects.
+        $diff = $date->diff($now);
+
+        // Check for each interval if it appears in the $diff object.
+        foreach (self::$units as $attribute => $unit) {
+            $count = $diff->$attribute;
+
+            if (0 !== $count) {
+                return $this->getPluralizedInterval($count, $diff->invert, $unit);
+            }
+        }
+
+        return '';
+    }
+
+    private function getPluralizedInterval($count, $invert, $unit)
+    {
+        if ($this->translator) {
+            $id = sprintf('diff.%s.%s', $invert ? 'in' : 'ago', $unit);
+
+            return $this->translator->transChoice($id, $count, ['%count%' => $count], 'date');
+        }
+
+        if (1 !== $count) {
+            $unit .= 's';
+        }
+
+        return $invert ? "in $count $unit" : "$count $unit ago";
+    }
+}