Merge branch '5.1' into 5.2

* 5.1:
  Update rounding mode defintion integer type
  Added a link to the related RFC
  [FrameworkBundle][WebLink] Config reference for the WebLink component

Author: javiereguiluz

reference/configuration/framework.rst

@@ -304,6 +304,7 @@ Configuration
   * `static_method`_
   * `translation_domain`_
 
+* `web_link`_
 * `workflows`_
 
   * :ref:`enabled <reference-workflows-enabled>`
@@ -3185,6 +3186,16 @@ headers
 Headers to add to emails. The key (``name`` attribute in xml format) is the
 header name and value the header value.
 
+web_link
+~~~~~~~~
+
+enabled
+.......
+
+**type**: ``boolean`` **default**: ``true`` or ``false`` depending on your installation
+
+Adds a `Link HTTP header`_ to the response.
+
 workflows
 ~~~~~~~~~
 
@@ -3358,3 +3369,4 @@ to know their differences.
 .. _`session.cache-limiter`: https://www.php.net/manual/en/session.configuration.php#ini.session.cache-limiter
 .. _`Microsoft NTLM authentication protocol`: https://docs.microsoft.com/en-us/windows/win32/secauthn/microsoft-ntlm
 .. _`utf-8 modifier`: https://www.php.net/reference.pcre.pattern.modifiers
+.. _`Link HTTP header`: https://tools.ietf.org/html/rfc5988

reference/forms/types/integer.rst

@@ -58,31 +58,41 @@ Field Options
 ``rounding_mode``
 ~~~~~~~~~~~~~~~~~
 
-**type**: ``integer`` **default**: ``IntegerToLocalizedStringTransformer::ROUND_DOWN``
+**type**: ``integer`` **default**: ``\NumberFormatter::ROUND_HALFUP``
 
 By default, if the user enters a non-integer number, it will be rounded
-down. There are several other rounding methods and each is a constant
-on the :class:`Symfony\\Component\\Form\\Extension\\Core\\DataTransformer\\IntegerToLocalizedStringTransformer`:
+down. You have several configurable options for that rounding. Each option
+is a constant on the :phpclass:`NumberFormatter` class:
 
-* ``IntegerToLocalizedStringTransformer::ROUND_DOWN`` Round towards zero.
+* ``\NumberFormatter::ROUND_DOWN`` Round towards zero. It
+  rounds ``1.4`` to ``1`` and ``-1.4`` to ``-1``.
 
-* ``IntegerToLocalizedStringTransformer::ROUND_FLOOR`` Round towards negative
-  infinity.
+* ``\NumberFormatter::ROUND_FLOOR`` Round towards negative
+  infinity. It rounds ``1.4`` to ``1`` and ``-1.4`` to ``-2``.
 
-* ``IntegerToLocalizedStringTransformer::ROUND_UP`` Round away from zero.
+* ``\NumberFormatter::ROUND_UP`` Round away from zero. It
+  rounds ``1.4`` to ``2`` and ``-1.4`` to ``-2``.
 
-* ``IntegerToLocalizedStringTransformer::ROUND_CEILING`` Round towards
-  positive infinity.
+* ``\NumberFormatter::ROUND_CEILING`` Round towards positive
+  infinity. It rounds ``1.4`` to ``2`` and ``-1.4`` to ``-1``.
 
-* ``IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN`` Round towards the
-  "nearest neighbor". If both neighbors are equidistant, round down.
+* ``\NumberFormatter::ROUND_HALFDOWN`` Round towards the
+  "nearest neighbor". If both neighbors are equidistant, round down. It rounds
+  ``2.5`` and ``1.6`` to ``2``, ``1.5`` and ``1.4`` to ``1``.
 
-* ``IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN`` Round towards the
-  "nearest neighbor". If both neighbors are equidistant, round towards the
-  even neighbor.
+* ``\NumberFormatter::ROUND_HALFEVEN`` Round towards the
+  "nearest neighbor". If both neighbors are equidistant, round towards the even
+  neighbor. It rounds ``2.5``, ``1.6`` and ``1.5`` to ``2`` and ``1.4`` to ``1``.
 
-* ``IntegerToLocalizedStringTransformer::ROUND_HALF_UP`` Round towards the
-  "nearest neighbor". If both neighbors are equidistant, round up.
+* ``\NumberFormatter::ROUND_HALFUP`` Round towards the
+  "nearest neighbor". If both neighbors are equidistant, round up. It rounds
+  ``2.5`` to ``3``, ``1.6`` and ``1.5`` to ``2`` and ``1.4`` to ``1``.
+
+.. deprecated:: 5.1
+
+    In Symfony versions prior to 5.1, these constants were also defined as aliases
+    in the :class:`Symfony\\Component\\Form\\Extension\\Core\\DataTransformer\\NumberToLocalizedStringTransformer`
+    class, but they are now deprecated in favor of the :phpclass:`NumberFormatter` constants.
 
 Overridden Options
 ------------------