my changes

app/Http/Controllers/Settings/CategoryController.php

@@ -0,0 +1,96 @@
+<?php
+namespace App\Http\Controllers\Settings;
+
+use App\Http\Requests;
+use App\Http\Controllers\Controller;
+use Illuminate\Http\Request;
+use App\Project;
+use App\Http\Requests\ProjectRequest;
+use Illuminate\View\View;
+use Illuminate\Http\RedirectResponse;
+
+class CategoryController extends Controller
+{
+
+    public function __construct()
+    {
+        $this->middleware('auth');
+    }
+
+    public function index() : View
+    {
+        $projects = Project::get();
+        return view('settings.project.category', compact('projects'));
+    }
+
+    /**
+     * Show the form for creating a new resource.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function add() : View
+    {
+        return view('settings.project.add');
+    }
+
+    public function store(ProjectRequest $request) : RedirectResponse
+    {
+        $input = $request->all();
+        Project::create($input);
+        session()->flash('flash_message', 'You have added 1 project!');
+        return redirect()->route('settings.project');
+    }
+
+    /**
+     * Show the form for editing the specified resource.
+     *
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function edit($id) : View
+    {
+        $project = Project::findOrFail($id);
+        return view('settings.project.edit', compact('project'));
+    }
+
+    /**
+     * Update the specified resource in storage.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function update($id, ProjectRequest $request) : RedirectResponse
+    {
+        $project = Project::findOrFail($id);
+        $input = $request->all();
+        $project->update($input);
+        session()->flash('flash_message', 'You have updated 1 project!');
+        return redirect()->route('settings.project');
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     *
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function delete($id) : RedirectResponse
+    {
+        $project = Project::with('documents')->findOrFail($id);
+        if ($project->documents->count() > 0) {
+            session()->flash(
+                'flash_message',
+                'You cannot delete this project!'
+                    . ' There are '
+                    . $project->documents->count()
+                    . ' documents in this project!'
+            );
+            return redirect()->route('settings.project');
+        } else {
+            $project->delete();
+            session()->flash('flash_message', 'You have deleted 1 project!');
+            return redirect()->route('settings.project');
+        }
+    }
+}