addColumn("Dependencia", "firebaseId", $this->string(50)); $this->addColumn("Evento", "firebaseId", $this->string(50)); $this->addColumn("Grupo", "firebaseId", $this->string(50)); } /** * {@inheritdoc} */ public function safeDown() { $this->dropColumn("Grupo", "firebaseId"); $this->dropColumn("Evento", "firebaseId"); $this->dropColumn("Dependencia", "firebaseId"); } }