/**
  * Run the migrations.
  *
  * @return void
  */
 public function up()
 {
     Schema::table(\App\Models\Article::getTableName(), function (Blueprint $table) {
         $table->foreign('permalink')->references('permalink')->on(\App\Models\ArticlePermalink::getTableName());
     });
 }
 /**
  * Reverse the migrations.
  *
  * @return void
  */
 public function down()
 {
     DB::statement(sprintf('DROP TABLE %s CASCADE', \App\Models\ArticlePermalink::getTableName()));
 }