How can indexes be checked if they exist in a Laravel migration?

Question

Trying to check if a unique index exists on a table when preparing a migration, how can it be achieved?

Schema::table('persons', function (Blueprint $table) {     if ($table->hasIndex('persons_body_unique')) {         $table->dropUnique('persons_body_unique');     } }) 

Something that looks like the above. (apparently, hasIndex() doesn't exist)

Answer 1

Using "doctrine-dbal" that Laravel uses is better solution:

Schema::table('persons', function (Blueprint $table) {     $sm = Schema::getConnection()->getDoctrineSchemaManager();     $indexesFound = $sm->listTableIndexes('persons');      if(array_key_exists("persons_body_unique", $indexesFound))         $table->dropUnique("persons_body_unique"); });