feat: Many category and Many sub-category media

database/migrations/2026_05_31_100000_create_media_category_pivot_tables.php

@@ -0,0 +1,79 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('category_media', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('media_id')->constrained('media')->cascadeOnDelete();
+            $table->foreignId('category_id')->constrained('categories')->cascadeOnDelete();
+            $table->timestamps();
+
+            $table->unique(['media_id', 'category_id']);
+        });
+
+        Schema::create('media_sub_category', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('media_id')->constrained('media')->cascadeOnDelete();
+            $table->foreignId('sub_category_id')->constrained('sub_categories')->cascadeOnDelete();
+            $table->timestamps();
+
+            $table->unique(['media_id', 'sub_category_id']);
+        });
+
+        // Backfill the new pivots from the existing single columns.
+        if (Schema::hasColumn('media', 'category_id')) {
+            DB::table('media')
+                ->whereNotNull('category_id')
+                ->orderBy('id')
+                ->select('id', 'category_id')
+                ->chunk(200, function ($rows) {
+                    $now = now();
+                    $insert = $rows->map(fn ($row) => [
+                        'media_id' => $row->id,
+                        'category_id' => $row->category_id,
+                        'created_at' => $now,
+                        'updated_at' => $now,
+                    ])->all();
+
+                    DB::table('category_media')->insertOrIgnore($insert);
+                });
+        }
+
+        if (Schema::hasColumn('media', 'subcategory_id')) {
+            DB::table('media')
+                ->whereNotNull('subcategory_id')
+                ->orderBy('id')
+                ->select('id', 'subcategory_id')
+                ->chunk(200, function ($rows) {
+                    $now = now();
+                    $insert = $rows->map(fn ($row) => [
+                        'media_id' => $row->id,
+                        'sub_category_id' => $row->subcategory_id,
+                        'created_at' => $now,
+                        'updated_at' => $now,
+                    ])->all();
+
+                    DB::table('media_sub_category')->insertOrIgnore($insert);
+                });
+        }
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('media_sub_category');
+        Schema::dropIfExists('category_media');
+    }
+};

database/migrations/2026_05_31_100100_drop_category_columns_from_media_table.php

@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('media', function (Blueprint $table) {
+            $table->dropForeign(['category_id']);
+            $table->dropColumn('category_id');
+
+            $table->dropForeign(['subcategory_id']);
+            $table->dropColumn('subcategory_id');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('media', function (Blueprint $table) {
+            $table->unsignedBigInteger('category_id')->nullable()->after('image_id');
+            $table->foreign('category_id')->references('id')->on('categories')->nullOnDelete();
+
+            $table->unsignedBigInteger('subcategory_id')->nullable()->after('category_id');
+            $table->foreign('subcategory_id')->references('id')->on('sub_categories')->nullOnDelete();
+        });
+    }
+};