tissue/database/migrations/2018_06_08_014226_recreate_metadata_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class RecreateMetadataTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::dropIfExists('metadata');
        Schema::create('metadata', function (Blueprint $table) {
            $table->text('url');
            $table->text('title');
            $table->text('description');
            $table->text('image');
            $table->timestamps();

            $table->index('url');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('metadata');
    }
}