first commit

app/Http/Controllers/CategoryController.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Category;
+use Illuminate\Http\Request;
+
+class CategoryController extends Controller
+{
+    /**
+     * Store a newly created resource in storage.
+     */
+    public function store(Request $request)
+    {
+        $validated = $request->validate([
+            'name' => 'required|string|max:255|unique:categories,name',
+        ]);
+
+        Category::create([
+            'name' => $validated['name'],
+            'is_active' => true,
+        ]);
+
+        return redirect()->back()->with('success', '分類已建立');
+    }
+
+    /**
+     * Update the specified resource in storage.
+     */
+    public function update(Request $request, Category $category)
+    {
+        $validated = $request->validate([
+            'name' => 'required|string|max:255|unique:categories,name,' . $category->id,
+        ]);
+
+        $category->update($validated);
+
+        return redirect()->back()->with('success', '分類已更新');
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     */
+    public function destroy(Category $category)
+    {
+        if ($category->products()->count() > 0) {
+            return redirect()->back()->with('error', '該分類下尚有商品，無法刪除');
+        }
+
+        $category->delete();
+
+        return redirect()->back()->with('success', '分類已刪除');
+    }
+}