reverse transform RFC 3339 formatted dates

xabbuh · xabbuh · commit 503239f75e59 · 2018-10-04T12:00:08.000+02:00
Technically, dates formatted according to the HTML specifications do not
contain any timezone information. But since our DateTimeType used to
contain this information in the passed, users had configure their JS
libraries to accept (and create) dates in that format.

To not break BC we should accept these dates and silently ignore the
additional timezone information.
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToHtml5LocalDateTimeTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToHtml5LocalDateTimeTransformer.php
@@ -81,7 +81,9 @@ public function reverseTransform($dateTimeLocal)
             return;
         }
 
-        if (!preg_match('/^(\d{4})-(\d{2})-(\d{2})[T ]\d{2}:\d{2}(?::\d{2})?$/', $dateTimeLocal, $matches)) {
+        // to maintain backwards compatibility we do not strictly validate the submitted date
+        // see https://github.com/symfony/symfony/issues/28699
+        if (!preg_match('/^(\d{4})-(\d{2})-(\d{2})[T ]\d{2}:\d{2}(?::\d{2})?/', $dateTimeLocal, $matches)) {
             throw new TransformationFailedException(sprintf('The date "%s" is not a valid date.', $dateTimeLocal));
         }
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToHtml5LocalDateTimeTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToHtml5LocalDateTimeTransformerTest.php
@@ -51,6 +51,10 @@ public function reverseTransformProvider()
             array('UTC', 'UTC', '2010-02-03 04:05:00 UTC', '2010-02-03T04:05'),
             array('America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:00 America/New_York', '2010-02-03T17:05'),
             array('Europe/Amsterdam', 'Europe/Amsterdam', '2013-08-21 10:30:00 Europe/Amsterdam', '2013-08-21T10:30:00'),
+            array('UTC', 'UTC', '2018-09-15T10:00:00Z', '2018-09-15T10:00:00Z'),
+            array('Europe/Berlin', 'Europe/Berlin', '2018-09-15T10:00:00+02:00', '2018-09-15T10:00:00+02:00'),
+            array('Europe/Berlin', 'Europe/Berlin', '2018-09-15T10:00:00+0200', '2018-09-15T10:00:00+0200'),
+            array('UTC', 'UTC', '2018-10-03T10:00:00.000Z', '2018-10-03T10:00:00.000Z'),
         );
     }
 

Original file line number	Diff line number	Diff line change
`@@ -81,7 +81,9 @@ public function reverseTransform($dateTimeLocal)`
`81`	`81`	`return;`
`82`	`82`	`}`
`83`	`83`
`84`		`- if (!preg_match('/^(\d{4})-(\d{2})-(\d{2})[T ]\d{2}:\d{2}(?::\d{2})?$/', $dateTimeLocal, $matches)) {`
	`84`	`+ // to maintain backwards compatibility we do not strictly validate the submitted date`
	`85`	`+ // see https://github.com/symfony/symfony/issues/28699`
	`86`	`+ if (!preg_match('/^(\d{4})-(\d{2})-(\d{2})[T ]\d{2}:\d{2}(?::\d{2})?/', $dateTimeLocal, $matches)) {`
`85`	`87`	`throw new TransformationFailedException(sprintf('The date "%s" is not a valid date.', $dateTimeLocal));`
`86`	`88`	`}`
`87`	`89`