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app/Http/Middleware/ValidationMiddleware.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Validator;
+use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+
+class ValidationMiddleware
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
+     * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
+     */
+    public function handle(Request $request, Closure $next)
+    {
+        if($request->acceptsJson()){
+            $method = $request->getMethod();
+            $path =$request->path();
+            if(preg_match('/[0-9]+$/',$request->path(),$match)) {
+                $match_id = $match[0];
+                $path = preg_replace('/[0-9]+$/', '{id}', $request->path());
+            }
+            $format = 'validation.'.$path.'@'.strtolower($method);
+            if (config($format)) {
+                if ($path == 'admin/user/{id}'){
+                    $replace = preg_replace('/update_id/', $match_id, config($format));
+                    $validator = Validator::make($request->all(), $replace);
+                }
+//                elseif(isset($match[0])){
+//                    $replace = preg_replace('/update_#/', $match[0], config($format));
+//                    $validator = Validator::make($request->all(), $replace);
+//                }
+                else{
+                    $validator = Validator::make($request->all(), config($format));
+                }
+                if ($validator->fails()) {
+                    return response()->json($validator->errors(),422);
+                }
+            }
+            return $next($request);
+        }
+        throw new BadRequestHttpException();
+    }
+}