minor #40315 [HttpFoundation] Use InputBag for POST requests too (acasademont)

This PR was merged into the 5.3-dev branch.

Discussion
----------

[HttpFoundation] Use InputBag for POST requests too

| Q             | A
| ------------- | ---
| Branch?       | 5.x
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       | Partially revert #37265
| License       | MIT
| Doc PR        | -

#37265 was created as a fix for #37100. However, when #37327 was merged, the original bug was also fixed with a different solution (allowing null values on `InputBag::set`) and parts of #37265 are not needed anymore. By using only `InputBag` as the `$request` bag we can tighten the typehint again and make static analysis a bit more useful.

Commits
-------

381a0a19f7 use InputBag for POST requests too, added missing scalar type hints

src/Symfony/Component/HttpFoundation/InputBag.php

@@ -21,16 +21,16 @@ use Symfony\Component\HttpFoundation\Exception\BadRequestException;
 final class InputBag extends ParameterBag
 {
     /**
-     * Returns a string input value by name.
+     * Returns a scalar input value by name.
      *
-     * @param string|null $default The default value if the input key does not exist
+     * @param string|int|float|bool|null $default The default value if the input key does not exist
      *
-     * @return string|null
+     * @return string|int|float|bool|null
      */
     public function get(string $key, $default = null)
     {
         if (null !== $default && !is_scalar($default) && !(\is_object($default) && method_exists($default, '__toString'))) {
-            trigger_deprecation('symfony/http-foundation', '5.1', 'Passing a non-string value as 2nd argument to "%s()" is deprecated, pass a string or null instead.', __METHOD__);
+            trigger_deprecation('symfony/http-foundation', '5.1', 'Passing a non-scalar value as 2nd argument to "%s()" is deprecated, pass a scalar or null instead.', __METHOD__);
         }
 
         $value = parent::get($key, $this);
@@ -72,12 +72,12 @@ final class InputBag extends ParameterBag
     /**
      * Sets an input by name.
      *
-     * @param string|array|null $value
+     * @param string|int|float|bool|array|null $value
      */
     public function set(string $key, $value)
     {
         if (null !== $value && !is_scalar($value) && !\is_array($value) && !method_exists($value, '__toString')) {
-            trigger_deprecation('symfony/http-foundation', '5.1', 'Passing "%s" as a 2nd Argument to "%s()" is deprecated, pass a string, array, or null instead.', get_debug_type($value), __METHOD__);
+            trigger_deprecation('symfony/http-foundation', '5.1', 'Passing "%s" as a 2nd Argument to "%s()" is deprecated, pass a scalar, array, or null instead.', get_debug_type($value), __METHOD__);
         }
 
         $this->parameters[$key] = $value;

src/Symfony/Component/HttpFoundation/Request.php

@@ -91,7 +91,7 @@ class Request
     /**
      * Request body parameters ($_POST).
      *
-     * @var InputBag|ParameterBag
+     * @var InputBag
      */
     public $request;
 
@@ -275,7 +275,7 @@ class Request
      */
     public function initialize(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
-        $this->request = new ParameterBag($request);
+        $this->request = new InputBag($request);
         $this->query = new InputBag($query);
         $this->attributes = new ParameterBag($attributes);
         $this->cookies = new InputBag($cookies);
@@ -305,9 +305,7 @@ class Request
     {
         $request = self::createRequestFromFactory($_GET, $_POST, [], $_COOKIE, $_FILES, $_SERVER);
 
-        if ($_POST) {
+        if (0 === strpos($request->headers->get('CONTENT_TYPE'), 'application/x-www-form-urlencoded')
-            $request->request = new InputBag($_POST);
-        } elseif (0 === strpos($request->headers->get('CONTENT_TYPE'), 'application/x-www-form-urlencoded')
             && \in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), ['PUT', 'DELETE', 'PATCH'])
         ) {
             parse_str($request->getContent(), $data);
@@ -457,7 +455,7 @@ class Request
             $dup->query = new InputBag($query);
         }
         if (null !== $request) {
-            $dup->request = new ParameterBag($request);
+            $dup->request = new InputBag($request);
         }
         if (null !== $attributes) {
             $dup->attributes = new ParameterBag($attributes);

src/Symfony/Component/HttpFoundation/Tests/InputBagTest.php

@@ -21,11 +21,14 @@ class InputBagTest extends TestCase
 
     public function testGet()
     {
-        $bag = new InputBag(['foo' => 'bar', 'null' => null]);
+        $bag = new InputBag(['foo' => 'bar', 'null' => null, 'int' => 1, 'float' => 1.0, 'bool' => false]);
 
-        $this->assertEquals('bar', $bag->get('foo'), '->get() gets the value of a parameter');
+        $this->assertSame('bar', $bag->get('foo'), '->get() gets the value of a string parameter');
-        $this->assertEquals('default', $bag->get('unknown', 'default'), '->get() returns second argument as default if a parameter is not defined');
+        $this->assertSame('default', $bag->get('unknown', 'default'), '->get() returns second argument as default if a parameter is not defined');
         $this->assertNull($bag->get('null', 'default'), '->get() returns null if null is set');
+        $this->assertSame(1, $bag->get('int'), '->get() gets the value of an int parameter');
+        $this->assertSame(1.0, $bag->get('float'), '->get() gets the value of a float parameter');
+        $this->assertFalse($bag->get('bool'), '->get() gets the value of a bool parameter');
     }
 
     public function testGetDoesNotUseDeepByDefault()
@@ -59,10 +62,10 @@ class InputBagTest extends TestCase
     /**
      * @group legacy
      */
-    public function testSetWithNonStringishOrArrayIsDeprecated()
+    public function testSetWithNonScalarOrArrayIsDeprecated()
     {
         $bag = new InputBag();
-        $this->expectDeprecation('Since symfony/http-foundation 5.1: Passing "Symfony\Component\HttpFoundation\InputBag" as a 2nd Argument to "Symfony\Component\HttpFoundation\InputBag::set()" is deprecated, pass a string, array, or null instead.');
+        $this->expectDeprecation('Since symfony/http-foundation 5.1: Passing "Symfony\Component\HttpFoundation\InputBag" as a 2nd Argument to "Symfony\Component\HttpFoundation\InputBag::set()" is deprecated, pass a scalar, array, or null instead.');
         $bag->set('foo', new InputBag());
     }
 
@@ -82,7 +85,7 @@ class InputBagTest extends TestCase
     public function testGetWithNonStringDefaultValueIsDeprecated()
     {
         $bag = new InputBag(['foo' => 'bar']);
-        $this->expectDeprecation('Since symfony/http-foundation 5.1: Passing a non-string value as 2nd argument to "Symfony\Component\HttpFoundation\InputBag::get()" is deprecated, pass a string or null instead.');
+        $this->expectDeprecation('Since symfony/http-foundation 5.1: Passing a non-scalar value as 2nd argument to "Symfony\Component\HttpFoundation\InputBag::get()" is deprecated, pass a scalar or null instead.');
         $bag->get('foo', ['a', 'b']);
     }
 

src/Symfony/Component/HttpFoundation/Tests/RequestTest.php

@@ -1287,11 +1287,6 @@ class RequestTest extends TestCase
     {
         $normalizedMethod = strtoupper($method);
 
-        $_POST = [];
-        $request = Request::createFromGlobals();
-        $this->assertNotInstanceOf(InputBag::class, $request->request);
-        $this->assertInstanceOf(ParameterBag::class, $request->request);
-
         $_GET['foo1'] = 'bar1';
         $_POST['foo2'] = 'bar2';
         $_COOKIE['foo3'] = 'bar3';