Base Functionality

composer.json

@@ -1,14 +1,14 @@
 {
-    "name": "lextira/larvel-formrequest-singleton",
-    "description": "Use Laravel's excellent FormRequest as Singleton.",
-    "license": "MIT",
-    "require": {
-        "php" : "^7.0",
-        "laravel/framework": "^6.0"
-    },
-    "autoload": {
-        "psr-4" : {
-            "Lextira\\FormRequestSingleton\\" : "src/"
-        }
+  "name": "lextira/laravel-formrequest-singleton",
+  "description": "Use Laravel's excellent FormRequest as Singleton.",
+  "license": "MIT",
+  "require": {
+    "php" : "^7.0",
+    "laravel/framework": "^6.0"
+  },
+  "autoload": {
+    "psr-4" : {
+      "Lextira\\FormRequestSingleton\\" : "src/"
     }
+  }
 }

src/FormRequestServiceProvider.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace Lextira\FormRequestSingleton;
+
+use Illuminate\Contracts\Foundation\Application;
+use Illuminate\Contracts\Validation\ValidatesWhenResolved;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Http\Request;
+use Illuminate\Routing\Redirector;
+use Illuminate\Support\ServiceProvider;
+
+class FormRequestServiceProvider extends ServiceProvider
+{
+    /**
+     * Register the service provider.
+     *
+     * @return void
+     */
+    public function register()
+    {
+        //
+    }
+
+    /**
+     * Bootstrap the application services.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        $this->app->resolving(FormRequest::class, function ($request, Application $app) {
+
+            // if the request is already bound, we don't need to do anything.
+            if ($app->bound(get_class($request))) {
+                return;
+            }
+
+            // but if not, we resolve a new FromRequest and register it as singleton.
+            $this->resolveFormRequestAndRegisterAsSingleton($request, $app);
+        });
+    }
+
+    /**
+     * Resolve a new FormRequest instance and bind it as singleton.
+     *
+     * @param \Illuminate\Http\Request $request
+     * @param \Illuminate\Contracts\Foundation\Application $app
+     * @throws
+     */
+    protected function resolveFormRequestAndRegisterAsSingleton(Request $request, Application $app)
+    {
+        $request = FormRequest::createFrom($app['request'], $request);
+
+        $request->setContainer($app)->setRedirector($app->make(Redirector::class));
+
+        if ($request instanceof ValidatesWhenResolved) {
+            $request->validateResolved();
+        }
+
+        $app->singleton(get_class($request), function(Application $app) use ($request) {
+            return $request;
+        });
+    }
+}

src/FoundationServiceProvider.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace Lextira\FormRequestSingleton;
+
+use Illuminate\Foundation\Providers\FoundationServiceProvider as IlluminateFoundationServiceProvider;
+
+class FoundationServiceProvider extends IlluminateFoundationServiceProvider
+{
+    /**
+     * The provider class names.
+     *
+     * @var array
+     */
+    protected $providers = [
+        FormRequestServiceProvider::class,
+    ];
+}