Migration-add_field

migration.php

class AddEmpresaIdTableRiscos extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('Riscos', function (Blueprint $table) {
            $table->string('empresa_id')->unsigned();
            $table->foreign('empresa_id')->reference('id')->on('empresas')->onDelete('cascade');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('Riscos', function (Blueprint $table) {
            $table->dropColumn('empresa_id');
        });
    }
}