add components button

device-app/app/Http/Controllers/PurchasingInformationController.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\PurchasingInformation;
+use Illuminate\Http\Request;
+
+class PurchasingInformationController extends Controller
+{
+    public function create()
+    {
+        return view('purchasings.create');
+    }
+
+    public function store(Request $request)
+    {
+        $formFields = $request->validate([
+            'price' => 'required',
+            'timestamp_warranty_end' => 'required',
+            'timestamp_purchase' => 'required',
+            'cost_centre' => 'required',
+        ]);
+
+        PurchasingInformation::create($formFields);
+
+        return redirect('/');
+    }
+
+    public function edit(PurchasingInformation $purchasing)
+    {
+        return view('purchasings.edit', ['purchasing' => $purchasing]);
+    }
+
+    public function update(PurchasingInformation $purchasing, Request $request)
+    {
+        $formFields = $request->validate([
+            'price' => 'required',
+            'timestamp_warranty_end' => 'required',
+            'timestamp_purchase' => 'required',
+            'cost_centre' => 'required',
+        ]);
+
+        $purchasing->update($formFields);
+
+        return back();
+    }
+
+    public function destroy(PurchasingInformation $purchasing)
+    {
+        $purchasing->delete();
+        return back();
+    }
+}