minor #10302 Remove \DateTimeInterface reference from constraint validators (ro0NL)

This PR was squashed before being merged into the master branch (closes #10302).

Discussion
----------

Remove \DateTimeInterface reference from constraint validators

See symfony/symfony#25015

Commits
-------

47b5917 Remove \DateTimeInterface reference from constraint validators

Author: javiereguiluz

reference/constraints/Date.rst

@@ -1,9 +1,8 @@
 Date
 ====
 
-Validates that a value is a valid date, meaning either a ``DateTime`` object
-or a string (or an object that can be cast into a string) that follows a
-valid YYYY-MM-DD format.
+Validates that a value is a valid date, meaning a string (or an object that can be cast into a string)
+that follows a valid YYYY-MM-DD format.
 
 +----------------+--------------------------------------------------------------------+
 | Applies to     | :ref:`property or method <validation-property-target>`             |
@@ -32,6 +31,7 @@ Basic Usage
         {
             /**
              * @Assert\Date()
+             * @var string A "Y-m-d" formatted value
              */
              protected $birthday;
         }
@@ -69,6 +69,11 @@ Basic Usage
 
         class Author
         {
+           /**
+            * @var string A "Y-m-d" formatted value
+            */
+            protected $birthday;
+
             public static function loadValidatorMetadata(ClassMetadata $metadata)
             {
                 $metadata->addPropertyConstraint('birthday', new Assert\Date());

reference/constraints/DateTime.rst

@@ -1,9 +1,8 @@
 DateTime
 ========
 
-Validates that a value is a valid "datetime", meaning either a ``DateTime``
-object or a string (or an object that can be cast into a string) that follows
-a specific format.
+Validates that a value is a valid "datetime", meaning a string (or an object that can be cast into a string)
+that follows a specific format.
 
 +----------------+------------------------------------------------------------------------+
 | Applies to     | :ref:`property or method <validation-property-target>`                 |
@@ -33,6 +32,7 @@ Basic Usage
         {
             /**
              * @Assert\DateTime()
+             * @var string A "Y-m-d H:i:s" formatted value
              */
              protected $createdAt;
         }
@@ -70,6 +70,11 @@ Basic Usage
 
         class Author
         {
+           /**
+            * @var string A "Y-m-d H:i:s" formatted value
+            */
+            protected $createdAt;
+
             public static function loadValidatorMetadata(ClassMetadata $metadata)
             {
                 $metadata->addPropertyConstraint('createdAt', new Assert\DateTime());

reference/constraints/Time.rst

@@ -1,8 +1,7 @@
 Time
 ====
 
-Validates that a value is a valid time, meaning an object implementing
-``DateTimeInterface`` or a string (or an object that can be cast into a string)
+Validates that a value is a valid time, meaning a string (or an object that can be cast into a string)
 that follows a valid ``HH:MM:SS`` format.
 
 +----------------+------------------------------------------------------------------------+
@@ -35,6 +34,7 @@ of the day when the event starts:
         {
             /**
              * @Assert\Time()
+             * @var string A "H:i:s" formatted value
              */
              protected $startsAt;
         }
@@ -72,6 +72,11 @@ of the day when the event starts:
 
         class Event
         {
+           /**
+            * @var string A "H:i:s" formatted value
+            */
+            protected $startsAt;
+
             public static function loadValidatorMetadata(ClassMetadata $metadata)
             {
                 $metadata->addPropertyConstraint('startsAt', new Assert\Time());