<?php

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

class CreateSnippetTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('snippets', function (Blueprint $table) {
            $table->increments('id');
            $table->string('description');
            $table->string('content');
            $table->boolean('public');
            $table->timestamps();
        });
    }

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

<?php

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

class CreateSnippetTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('snippets', function (Blueprint $table) {
            $table->increments('id');
            $table->string('description');
            $table->text('content');
            $table->boolean('public');
            $table->timestamps();
        });
    }

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

Change the content field in table Snippet string => text
Change the content field in table Snippet string => text
