Metadata - Tags の多対多リレーション追加

app/Metadata.php

@@ -14,4 +14,9 @@ class Metadata extends Model
     protected $visible = ['url', 'title', 'description', 'image', 'expires_at'];
 
     protected $dates = ['created_at', 'updated_at', 'expires_at'];
+
+    public function tags()
+    {
+        return $this->belongsToMany(Tag::class)->withTimestamps();
+    }
 }

database/migrations/2019_04_29_111019_create_metadata_tag_table.php

@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateMetadataTagTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('metadata_tag', function (Blueprint $table) {
+            $table->increments('id');
+            $table->text('metadata_url')->index();
+            $table->integer('tag_id')->index();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('metadata_tag');
+    }
+}