minor #20047 [Validator] Add the WordCount constraint (alexandre-daubois)

This PR was merged into the 7.2 branch.

Discussion
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[Validator] Add the `WordCount` constraint

Related to symfony/symfony#57716

Commits
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e983455 [Validator] Add the `WordCount` constraint

Author: javiereguiluz

reference/constraints/WordCount.rst

@@ -0,0 +1,150 @@
+WordCount
+=========
+
+.. versionadded:: 7.2
+
+    The ``WordCount`` constraint was introduced in Symfony 7.2.
+
+Validates that a string (or an object implementing the ``Stringable`` PHP interface)
+contains a given number of words. Internally, this constraint uses the
+:phpclass:`IntlBreakIterator` class to count the words depending on your locale.
+
+==========  =======================================================================
+Applies to  :ref:`property or method <validation-property-target>`
+Class       :class:`Symfony\\Component\\Validator\\Constraints\\WordCount`
+Validator   :class:`Symfony\\Component\\Validator\\Constraints\\WordCountValidator`
+==========  =======================================================================
+
+Basic Usage
+-----------
+
+If you wanted to ensure that the ``content`` property of a ``BlogPostDTO``
+class contains between 100 and 200 words, you could do the following:
+
+.. configuration-block::
+
+    .. code-block:: php-attributes
+
+        // src/Entity/BlogPostDTO.php
+        namespace App\Entity;
+
+        use Symfony\Component\Validator\Constraints as Assert;
+
+        class BlogPostDTO
+        {
+            #[Assert\WordCount(min: 100, max: 200)]
+            protected string $content;
+        }
+
+    .. code-block:: yaml
+
+        # config/validator/validation.yaml
+        App\Entity\BlogPostDTO:
+            properties:
+                content:
+                    - WordCount:
+                        min: 100
+                        max: 200
+
+    .. code-block:: xml
+
+        <!-- config/validator/validation.xml -->
+        <?xml version="1.0" encoding="UTF-8" ?>
+        <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping https://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
+
+            <class name="App\Entity\BlogPostDTO">
+                <property name="content">
+                    <constraint name="WordCount">
+                        <option name="min">100</option>
+                        <option name="max">200</option>
+                    </constraint>
+                </property>
+            </class>
+        </constraint-mapping>
+
+    .. code-block:: php
+
+        // src/Entity/BlogPostDTO.php
+        namespace App\Entity;
+
+        use Symfony\Component\Validator\Constraints as Assert;
+        use Symfony\Component\Validator\Mapping\ClassMetadata;
+
+        class BlogPostDTO
+        {
+            // ...
+
+            public static function loadValidatorMetadata(ClassMetadata $metadata): void
+            {
+                $metadata->addPropertyConstraint('content', new Assert\WordCount([
+                    'min' => 100,
+                    'max' => 200,
+                ]));
+            }
+        }
+
+Options
+-------
+
+``min``
+~~~~~~~
+
+**type**: ``integer`` **default**: ``null``
+
+The minimum number of words that the value must contain.
+
+``max``
+~~~~~~~
+
+**type**: ``integer`` **default**: ``null``
+
+The maximum number of words that the value must contain.
+
+``locale``
+~~~~~~~~~~
+
+**type**: ``string`` **default**: ``null``
+
+The locale to use for counting the words by using the :phpclass:`IntlBreakIterator`
+class. The default value (``null``) means that the constraint uses the current
+user locale.
+
+.. include:: /reference/constraints/_groups-option.rst.inc
+
+``minMessage``
+~~~~~~~~~~~~~~
+
+**type**: ``string`` **default**: ``This value is too short. It should contain at least one word.|This value is too short. It should contain at least {{ min }} words.``
+
+This is the message that will be shown if the value does not contain at least
+the minimum number of words.
+
+You can use the following parameters in this message:
+
+================  ==================================================
+Parameter         Description
+================  ==================================================
+``{{ min }}``     The minimum number of words
+``{{ count }}``   The actual number of words
+================  ==================================================
+
+``maxMessage``
+~~~~~~~~~~~~~~
+
+**type**: ``string`` **default**: ``This value is too long. It should contain one word.|This value is too long. It should contain {{ max }} words or less.``
+
+This is the message that will be shown if the value contains more than the
+maximum number of words.
+
+You can use the following parameters in this message:
+
+================  ==================================================
+Parameter         Description
+================  ==================================================
+``{{ max }}``     The maximum number of words
+``{{ count }}``   The actual number of words
+================  ==================================================
+
+.. include:: /reference/constraints/_payload-option.rst.inc

reference/constraints/map.rst.inc

@@ -33,6 +33,7 @@ String Constraints
 * :doc:`NoSuspiciousCharacters </reference/constraints/NoSuspiciousCharacters>`
 * :doc:`Charset </reference/constraints/Charset>`
 * :doc:`MacAddress </reference/constraints/MacAddress>`
+* :doc:`WordCount </reference/constraints/WordCount>`
 
 Comparison Constraints
 ~~~~~~~~~~~~~~~~~~~~~~