admin and mod categories management

app/Http/Controllers/CategoryManagementController.php

@@ -0,0 +1,104 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Category;
+use Illuminate\Http\Request;
+use Illuminate\Validation\Rule;
+
+class CategoryManagementController extends Controller
+{
+    /**
+     * Display a listing of categories.
+     */
+    public function index(Request $request)
+    {
+        $query = Category::withCount('products');
+
+        // Search
+        if ($request->filled('search')) {
+            $search = $request->search;
+            $query->where(function ($q) use ($search) {
+                $q->where('name', 'like', "%{$search}%")
+                    ->orWhere('description', 'like', "%{$search}%");
+            });
+        }
+
+        $categories = $query->latest()->paginate(20);
+
+        return view('categories.index', compact('categories'));
+    }
+
+    /**
+     * Show the form for creating a new category.
+     */
+    public function create()
+    {
+        return view('categories.create');
+    }
+
+    /**
+     * Store a newly created category.
+     */
+    public function store(Request $request)
+    {
+        $validated = $request->validate([
+            'name' => ['required', 'string', 'max:255', 'unique:categories,name'],
+            'description' => ['nullable', 'string', 'max:1000'],
+        ]);
+
+        // Generate unique slug
+        $validated['slug'] = Category::generateUniqueSlug($validated['name']);
+
+        Category::create($validated);
+
+        return redirect()->route('categories.index')
+            ->with('success', 'Category created successfully.');
+    }
+
+    /**
+     * Show the form for editing a category.
+     */
+    public function edit(Category $category)
+    {
+        return view('categories.edit', compact('category'));
+    }
+
+    /**
+     * Update the specified category.
+     */
+    public function update(Request $request, Category $category)
+    {
+        $validated = $request->validate([
+            'name' => ['required', 'string', 'max:255', Rule::unique('categories')->ignore($category->id)],
+            'description' => ['nullable', 'string', 'max:1000'],
+        ]);
+
+        // Regenerate slug if name changed
+        if ($category->name !== $validated['name']) {
+            $validated['slug'] = Category::generateUniqueSlug($validated['name'], $category->id);
+        }
+
+        $category->update($validated);
+
+        return redirect()->route('categories.index')
+            ->with('success', 'Category updated successfully.');
+    }
+
+    /**
+     * Remove the specified category.
+     */
+    public function destroy(Category $category)
+    {
+        // Check if category has products
+        if ($category->products()->count() > 0) {
+            return redirect()->route('categories.index')
+                ->with('error', "Cannot delete category '{$category->name}' because it has {$category->products()->count()} products. Please reassign or delete those products first.");
+        }
+
+        $category->delete();
+
+        return redirect()->route('categories.index')
+            ->with('success', 'Category deleted successfully.');
+    }
+}

app/Models/Category.php

@@ -4,6 +4,7 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Support\Str;
 
 class Category extends Model
 {
@@ -25,4 +26,39 @@ class Category extends Model
     {
         return $this->hasMany(Product::class);
     }
+
+    /**
+     * Generate a unique slug for the category based on its name.
+     */
+    public static function generateUniqueSlug(string $name, ?int $excludeId = null): string
+    {
+        $slug = Str::slug($name);
+        $originalSlug = $slug;
+        $count = 1;
+
+        // Keep appending numbers until we find a unique slug
+        $query = static::where('slug', $slug);
+        if ($excludeId) {
+            $query->where('id', '!=', $excludeId);
+        }
+
+        while ($query->exists()) {
+            $slug = $originalSlug . '-' . $count;
+            $count++;
+            $query = static::where('slug', $slug);
+            if ($excludeId) {
+                $query->where('id', '!=', $excludeId);
+            }
+        }
+
+        return $slug;
+    }
+
+    /**
+     * Get the route key for the model.
+     */
+    public function getRouteKeyName(): string
+    {
+        return 'slug';
+    }
 }