Edit file File name : 20200616130143_ReplacePermalinkHashIndex.php Content :<?php namespace Yoast\WP\SEO\Config\Migrations; use Yoast\WP\Lib\Migrations\Migration; use Yoast\WP\Lib\Model; /** * ReplacePermalinkHashIndex class. */ class ReplacePermalinkHashIndex extends Migration { /** * The plugin this migration belongs to. * * @var string */ public static $plugin = 'free'; /** * Migration up. * * @return void */ public function up() { $table_name = $this->get_table_name(); $adapter = $this->get_adapter(); if ( ! $adapter->has_table( $table_name ) ) { return; } $this->change_column( $table_name, 'permalink_hash', 'string', [ 'null' => true, 'limit' => 40, ] ); if ( $adapter->has_index( $table_name, [ 'permalink_hash' ], [ 'name' => 'permalink_hash' ] ) ) { $this->remove_index( $table_name, [ 'permalink_hash', ], [ 'name' => 'permalink_hash', ] ); } if ( ! $adapter->has_index( $table_name, [ 'permalink_hash', 'object_type' ], [ 'name' => 'permalink_hash_and_object_type' ] ) ) { $this->add_index( $table_name, [ 'permalink_hash', 'object_type', ], [ 'name' => 'permalink_hash_and_object_type', ] ); } } /** * Migration down. * * @return void */ public function down() { $table_name = $this->get_table_name(); $adapter = $this->get_adapter(); if ( ! $adapter->has_table( $table_name ) ) { return; } if ( $adapter->has_index( $table_name, [ 'permalink_hash', 'object_type' ], [ 'name' => 'permalink_hash_and_object_type' ] ) ) { $this->remove_index( $table_name, [ 'permalink_hash', 'object_type', ], [ 'name' => 'permalink_hash_and_object_type', ] ); } $this->change_column( $table_name, 'permalink_hash', 'string', [ 'null' => true, 'limit' => 191, ] ); if ( ! $adapter->has_index( $table_name, [ 'permalink_hash' ], [ 'name' => 'permalink_hash' ] ) ) { $this->add_index( $table_name, [ 'permalink_hash', ], [ 'name' => 'permalink_hash', ] ); } } /** * Retrieves the table name to use for storing indexables. * * @return string The table name to use. */ protected function get_table_name() { return Model::get_table_name( 'Indexable' ); } } Save