add some methods for manipulating middleware

Author: taylorotwell

src/Illuminate/Foundation/Http/Kernel.php

@@ -10,6 +10,7 @@
 use Illuminate\Routing\Pipeline;
 use Illuminate\Routing\Router;
 use Illuminate\Support\Facades\Facade;
+use InvalidArgumentException;
 use Symfony\Component\Debug\Exception\FatalThrowableError;
 use Throwable;
 
@@ -294,6 +295,76 @@ public function pushMiddleware($middleware)
         return $this;
     }
 
+    /**
+     * Prepend the given middleware to the given middleware group.
+     *
+     * @param  string  $group
+     * @param  string  $middleware
+     * @return $this
+     */
+    public function prependMiddlewareToGroup($group, $middleware)
+    {
+        if (! isset($this->middlewareGroups[$group])) {
+            throw new InvalidArgumentException("The [{$group}] middleware group has not been defined.");
+        }
+
+        if (array_search($middleware, $this->middlewareGroups[$group]) === false) {
+            array_unshift($this->middlewareGroups[$group], $middleware);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Append the given middleware to the given middleware group.
+     *
+     * @param  string  $group
+     * @param  string  $middleware
+     * @return $this
+     */
+    public function appendMiddlewareToGroup($group, $middleware)
+    {
+        if (! isset($this->middlewareGroups[$group])) {
+            throw new InvalidArgumentException("The [{$group}] middleware group has not been defined.");
+        }
+
+        if (array_search($middleware, $this->middlewareGroups[$group]) === false) {
+            $this->middlewareGroups[$group][] = $middleware;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Prepend the given middleware to the middleware priority list.
+     *
+     * @param  string  $middleware
+     * @return $this
+     */
+    public function prependToMiddlewarePriority($middleware)
+    {
+        if (! in_array($middleware, $this->middlewarePriority)) {
+            array_unshift($this->middlewarePriority, $middleware);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Append the given middleware to the middleware priority list.
+     *
+     * @param  string  $middleware
+     * @return $this
+     */
+    public function appendToMiddlewarePriority($middleware)
+    {
+        if (! in_array($middleware, $this->middlewarePriority)) {
+            $this->middlewarePriority[] = $middleware;
+        }
+
+        return $this;
+    }
+
     /**
      * Get the bootstrap classes for the application.
      *