Method emulation. Basic argument converters, pp 7-8.

.idea/workspace.xml

@@ -2,10 +2,9 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="ddb2382b-0607-474c-bb0c-2ed75e2c2479" name="Default" comment="">
+      <change type="NEW" beforePath="" afterPath="$PROJECT_DIR$/src/demo/User.php" />
       <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/composer.json" afterPath="$PROJECT_DIR$/composer.json" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/composer.lock" afterPath="$PROJECT_DIR$/composer.lock" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/config/prod.php" afterPath="$PROJECT_DIR$/config/prod.php" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/app.php" afterPath="$PROJECT_DIR$/src/app.php" />
       <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/controllers.php" afterPath="$PROJECT_DIR$/src/controllers.php" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
@@ -20,8 +19,18 @@
       <file leaf-file-name="controllers.php" pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/src/controllers.php">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="142">
-              <caret line="38" column="26" lean-forward="false" selection-start-line="38" selection-start-column="26" selection-end-line="38" selection-end-column="26" />
+            <state relative-caret-position="612">
+              <caret line="49" column="44" lean-forward="false" selection-start-line="49" selection-start-column="44" selection-end-line="49" selection-end-column="44" />
+              <folding />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="User.php" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/src/demo/User.php">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="105">
+              <caret line="7" column="0" lean-forward="false" selection-start-line="7" selection-start-column="0" selection-end-line="7" selection-end-column="0" />
               <folding />
             </state>
           </provider>
@@ -43,10 +52,11 @@
         <option value="$PROJECT_DIR$/README.md" />
         <option value="$PROJECT_DIR$/config/dev.php" />
         <option value="$PROJECT_DIR$/composer.json" />
-        <option value="$PROJECT_DIR$/src/app.php" />
         <option value="$PROJECT_DIR$/templates/errors/4xx.html.twig" />
-        <option value="$PROJECT_DIR$/src/controllers.php" />
         <option value="$PROJECT_DIR$/config/prod.php" />
+        <option value="$PROJECT_DIR$/src/app.php" />
+        <option value="$PROJECT_DIR$/src/demo/User.php" />
+        <option value="$PROJECT_DIR$/src/controllers.php" />
       </list>
     </option>
   </component>
@@ -124,6 +134,12 @@
               <item name="silex-book" type="2a2b976b:PhpTreeStructureProvider$1" />
               <item name="src" type="2a2b976b:PhpTreeStructureProvider$1" />
             </path>
+            <path>
+              <item name="silex-book" type="b2602c69:ProjectViewProjectNode" />
+              <item name="silex-book" type="2a2b976b:PhpTreeStructureProvider$1" />
+              <item name="src" type="2a2b976b:PhpTreeStructureProvider$1" />
+              <item name="demo" type="2a2b976b:PhpTreeStructureProvider$1" />
+            </path>
             <path>
               <item name="silex-book" type="b2602c69:ProjectViewProjectNode" />
               <item name="silex-book" type="2a2b976b:PhpTreeStructureProvider$1" />
@@ -135,6 +151,24 @@
               <item name="templates" type="2a2b976b:PhpTreeStructureProvider$1" />
               <item name="errors" type="2a2b976b:PhpTreeStructureProvider$1" />
             </path>
+            <path>
+              <item name="silex-book" type="b2602c69:ProjectViewProjectNode" />
+              <item name="silex-book" type="2a2b976b:PhpTreeStructureProvider$1" />
+              <item name="vendor" type="2a2b976b:PhpTreeStructureProvider$1" />
+            </path>
+            <path>
+              <item name="silex-book" type="b2602c69:ProjectViewProjectNode" />
+              <item name="silex-book" type="2a2b976b:PhpTreeStructureProvider$1" />
+              <item name="vendor" type="2a2b976b:PhpTreeStructureProvider$1" />
+              <item name="symfony" type="2a2b976b:PhpTreeStructureProvider$1" />
+            </path>
+            <path>
+              <item name="silex-book" type="b2602c69:ProjectViewProjectNode" />
+              <item name="silex-book" type="2a2b976b:PhpTreeStructureProvider$1" />
+              <item name="vendor" type="2a2b976b:PhpTreeStructureProvider$1" />
+              <item name="symfony" type="2a2b976b:PhpTreeStructureProvider$1" />
+              <item name="http-foundation" type="2a2b976b:PhpTreeStructureProvider$1" />
+            </path>
             <path>
               <item name="silex-book" type="b2602c69:ProjectViewProjectNode" />
               <item name="silex-book" type="2a2b976b:PhpTreeStructureProvider$1" />
@@ -178,12 +212,12 @@
       <option name="number" value="Default" />
       <option name="presentableId" value="Default" />
       <updated>1511938962819</updated>
-      <workItem from="1511938964059" duration="1813000" />
+      <workItem from="1511938964059" duration="2420000" />
     </task>
     <servers />
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="1813000" />
+    <option name="totallyTimeSpent" value="2420000" />
   </component>
   <component name="ToolWindowManager">
     <frame x="0" y="23" width="1676" height="1027" extended-state="6" />
@@ -200,7 +234,7 @@
       <window_info id="Database" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
       <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="5" side_tool="false" content_ui="tabs" />
       <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.249694" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
-      <window_info id="Debug" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.39914164" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Debug" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.39914164" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="0" side_tool="true" content_ui="tabs" />
       <window_info id="Cvs" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="8" side_tool="false" content_ui="tabs" />
       <window_info id="Message" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="4" side_tool="false" content_ui="tabs" />
@@ -222,7 +256,7 @@
       <breakpoints>
         <line-breakpoint enabled="true" type="php">
           <url>file://$PROJECT_DIR$/src/controllers.php</url>
-          <line>44</line>
+          <line>53</line>
         </line-breakpoint>
       </breakpoints>
       <option name="time" value="1" />
@@ -281,50 +315,66 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/web/index_dev.php">
+    <entry file="file://$PROJECT_DIR$/templates/errors/4xx.html.twig">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="345">
-          <caret line="22" column="0" lean-forward="true" selection-start-line="22" selection-start-column="0" selection-end-line="22" selection-end-column="0" />
+        <state relative-caret-position="60">
+          <caret line="4" column="14" lean-forward="false" selection-start-line="4" selection-start-column="14" selection-end-line="4" selection-end-column="14" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/config/prod.php">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="105">
+          <caret line="7" column="17" lean-forward="false" selection-start-line="7" selection-start-column="17" selection-end-line="7" selection-end-column="17" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/vendor/symfony/http-foundation/Request.php">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="102">
+          <caret line="768" column="27" lean-forward="true" selection-start-line="768" selection-start-column="27" selection-end-line="768" selection-end-column="27" />
           <folding />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/app.php">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="300">
-          <caret line="20" column="0" lean-forward="false" selection-start-line="20" selection-start-column="0" selection-end-line="20" selection-end-column="0" />
+        <state relative-caret-position="330">
+          <caret line="22" column="0" lean-forward="true" selection-start-line="22" selection-start-column="0" selection-end-line="22" selection-end-column="0" />
           <folding />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/config/dev.php">
+    <entry file="file://$PROJECT_DIR$/web/index_dev.php">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="270">
+        <state relative-caret-position="285">
           <caret line="18" column="0" lean-forward="true" selection-start-line="18" selection-start-column="0" selection-end-line="18" selection-end-column="0" />
           <folding />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/templates/errors/4xx.html.twig">
+    <entry file="file://$PROJECT_DIR$/config/dev.php">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="60">
-          <caret line="4" column="14" lean-forward="false" selection-start-line="4" selection-start-column="14" selection-end-line="4" selection-end-column="14" />
+        <state relative-caret-position="270">
+          <caret line="18" column="0" lean-forward="true" selection-start-line="18" selection-start-column="0" selection-end-line="18" selection-end-column="0" />
           <folding />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/config/prod.php">
+    <entry file="file://$PROJECT_DIR$/src/demo/User.php">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="105">
-          <caret line="7" column="17" lean-forward="false" selection-start-line="7" selection-start-column="17" selection-end-line="7" selection-end-column="17" />
+          <caret line="7" column="0" lean-forward="false" selection-start-line="7" selection-start-column="0" selection-end-line="7" selection-end-column="0" />
           <folding />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/controllers.php">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="142">
-          <caret line="38" column="26" lean-forward="false" selection-start-line="38" selection-start-column="26" selection-end-line="38" selection-end-column="26" />
+        <state relative-caret-position="612">
+          <caret line="49" column="44" lean-forward="false" selection-start-line="49" selection-start-column="44" selection-end-line="49" selection-end-column="44" />
           <folding />
         </state>
       </provider>

src/app.php

@@ -5,6 +5,7 @@ use Silex\Provider\AssetServiceProvider;
 use Silex\Provider\TwigServiceProvider;
 use Silex\Provider\ServiceControllerServiceProvider;
 use Silex\Provider\HttpFragmentServiceProvider;
+use Symfony\Component\HttpFoundation\Request;
 
 $app = new Application();
 $app->register(new ServiceControllerServiceProvider());
@@ -17,4 +18,7 @@ $app['twig'] = $app->extend('twig', function ($twig, $app) {
     return $twig;
 });
 
+// Support PATCH/PUT/DELETE.. emulation on POST for browsers. Beware XSS.
+Request::enableHttpMethodParameterOverride();
+
 return $app;

src/controllers.php

@@ -1,5 +1,6 @@
 <?php
 
+use Demo\User;
 use Silex\Application;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
@@ -19,6 +20,12 @@ $blogPosts = [
     'body' => '...It takes time on version changes...',
   ],
 ];
+
+$userProvider = function ($id) {
+  return new User($id);
+};
+
+// Available automatic arguments on controllers: Application, Request.
 $app->get('/blog', function () use ($blogPosts) {
   $output = '';
   foreach ($blogPosts as $post) {
@@ -39,7 +46,9 @@ $app->post('/feedback', function (Application $app, Request $request) {
     mail($app['app.mail_to'], '[YourSite] Feedback', $message);
     return new Response ('Thank you for your feedback!', Response::HTTP_CREATED);
   });
-
+$app->get('/user/{user}', function (User $user) {
+  return "<h1>User {$user->getId()}</h1>\n";
+})->convert ('user', $userProvider );
 
 $app->error(function (\Exception $e, Request $request, $code) use ($app) {
     if ($app['debug']) {

src/demo/User.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Demo;
+
+class User {
+
+  protected $id;
+
+  public function __construct($id) {
+    $this->id = (int) $id;
+  }
+
+  /**
+   * @return int
+   */
+  public function getId(): int {
+    return $this->id;
+  }
+
+}