bigIncrements('id'); $table->string('name'); $table->string('type'); $table->unsignedBigInteger('test_type_id'); $table->foreign('test_type_id')->references('id')->on('test_types'); $table->unsignedBigInteger('parent_id')->nullable(); $table->foreign('parent_id')->references('id')->on('inputs'); $table->string('size'); $table->string('value'); $table->timestamps(); }); } /** * Reverse the migrations. * * @return void */ public function down() { Schema::dropIfExists('inputs'); } }