Added support for inverted intervals (future time) and unit tests

framework/base/Formatter.php

@@ -468,7 +468,7 @@ class Formatter extends Component
 	 *
 	 * @return string the formatted result
 	 */
-	public function asElapsedTime($value)
+	public function asRelativeTime($value, $referenceTime=null)
 	{
 		if ($value === null) {
 			return $this->nullDisplay;
@@ -490,41 +490,60 @@ class Formatter extends Component
 				}
 			} else {
 				$timezone = new \DateTimeZone($this->timeZone);
+				
+				if ($referenceTime === null) {
+					$dateNow = new DateTime('now', $timezone);
+				} else {
+					$referenceTime = $this->normalizeDatetimeValue($referenceTime);
+					$dateNow = new DateTime(null, $timezone);
+					$dateNow->setTimestamp($referenceTime);
+				}
 
-				$dateNow = new DateTime('now', $timezone);
 				$dateThen = new DateTime(null, $timezone);
 				$dateThen->setTimestamp($timestamp);
 
-				$interval = $dateNow->diff($dateThen);
+				$interval = $dateThen->diff($dateNow);
+				var_dump($dateThen);
+				var_dump($dateNow);
 			}
 		}
 
-		if ($interval->y >= 1) {
-			$delta = $interval->y;
-			return Yii::t('yii', '{delta, plural, =1{a year} other{# years}} ago', ['delta' => $delta]);
-		}
-		if ($interval->m >= 1) {
-			$delta = $interval->m;
-			return Yii::t('yii', '{delta, plural, =1{a month} other{# months}} ago', ['delta' => $delta]);
-		}
-		if ($interval->d >= 7) {
-			$delta = floor($interval->d / 7);
-			return Yii::t('yii', '{delta, plural, =1{a week} other{# weeks}} ago', ['delta' => $delta]);
-		}
-		if ($interval->d >= 1) {
-			$delta = $interval->d;
-			return Yii::t('yii', '{delta, plural, =1{yesterday} other{# days ago}}', ['delta' => $delta]);
-		}
-		if ($interval->h >= 1) {
-			$delta = $interval->h;
-			return Yii::t('yii', '{delta, plural, =1{an hour} other{# hours}} ago', ['delta' => $delta]);
-		}
-		if ($interval->i >= 1) {
-			$delta = $interval->i;
-			return Yii::t('yii', '{delta, plural, =1{a minute} other{# minutes}} ago', ['delta' => $delta]);
-		}
+		if ($interval->invert) {
+			if ($interval->y >= 1) {
+				return Yii::t('yii', 'in {delta, plural, =1{a year} other{# years}}', ['delta' => $interval->y]);
+			}
+			if ($interval->m >= 1) {
+				return Yii::t('yii', 'in {delta, plural, =1{a month} other{# months}}', ['delta' => $interval->m]);
+			}
+			if ($interval->d >= 1) {
+				return Yii::t('yii', 'in {delta, plural, =1{a day} other{# days}}', ['delta' => $interval->d]);
+			}
+			if ($interval->h >= 1) {
+				return Yii::t('yii', 'in {delta, plural, =1{an hour} other{# hours}}', ['delta' => $interval->h]);
+			}
+			if ($interval->i >= 1) {
+				return Yii::t('yii', 'in {delta, plural, =1{a minute} other{# minutes}}', ['delta' => $interval->i]);
+			}
+
+			return Yii::t('yii', 'in {delta, plural, =1{a second} other{# seconds}}', ['delta' => $interval->s]);
+		} else {
+			if ($interval->y >= 1) {
+				return Yii::t('yii', '{delta, plural, =1{a year} other{# years}} ago', ['delta' => $interval->y]);
+			}
+			if ($interval->m >= 1) {
+				return Yii::t('yii', '{delta, plural, =1{a month} other{# months}} ago', ['delta' => $interval->m]);
+			}
+			if ($interval->d >= 1) {
+				return Yii::t('yii', '{delta, plural, =1{a day} other{# days}} ago', ['delta' => $interval->d]);
+			}
+			if ($interval->h >= 1) {
+				return Yii::t('yii', '{delta, plural, =1{an hour} other{# hours}} ago', ['delta' => $interval->h]);
+			}
+			if ($interval->i >= 1) {
+				return Yii::t('yii', '{delta, plural, =1{a minute} other{# minutes}} ago', ['delta' => $interval->i]);
+			}
 
-		$delta = $interval->s;
-		return Yii::t('yii', '{delta, plural, =1{a second} other{# seconds}} ago', ['delta' => $delta]);
+			return Yii::t('yii', '{delta, plural, =1{a second} other{# seconds}} ago', ['delta' => $interval->s]);
+		}
 	}
 }