mirror of
https://gitlab.com/Chill-Projet/chill-bundles.git
synced 2025-10-31 01:08:26 +00:00
71 lines
3.4 KiB
PHP
71 lines
3.4 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Chill\Migrations\Person;
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use Doctrine\DBAL\Schema\Schema;
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use Doctrine\Migrations\AbstractMigration;
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/**
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* Change model relation between Person and AccompagnyingPeriod
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* Migrate datas into new join table
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*
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* @author Mathieu Jaumotte mathieu.jaumotte@champs-libres.coop
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*/
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final class Version20210326113045 extends AbstractMigration
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{
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private $datas = [];
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public function getDescription() : string
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{
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return 'Change model relation between Person and AccompagnyingPeriod, without losing datas when going up';
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}
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/**
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* In these direction, there is no loss.
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*/
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public function up(Schema $schema) : void
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{
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// create join table
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$this->addSql('CREATE TABLE persons_accompanying_periods (person_id INT NOT NULL, accompanyingperiod_id INT NOT NULL, PRIMARY KEY(person_id, accompanyingperiod_id))');
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$this->addSql('CREATE INDEX IDX_49A3871F217BBB47 ON persons_accompanying_periods (person_id)');
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$this->addSql('CREATE INDEX IDX_49A3871F550B0C53 ON persons_accompanying_periods (accompanyingperiod_id)');
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$this->addSql('ALTER TABLE persons_accompanying_periods ADD CONSTRAINT FK_49A3871F217BBB47 FOREIGN KEY (person_id) REFERENCES chill_person_person (id) ON DELETE CASCADE NOT DEFERRABLE INITIALLY IMMEDIATE');
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$this->addSql('ALTER TABLE persons_accompanying_periods ADD CONSTRAINT FK_49A3871F550B0C53 FOREIGN KEY (accompanyingperiod_id) REFERENCES chill_person_accompanying_period (id) ON DELETE CASCADE NOT DEFERRABLE INITIALLY IMMEDIATE');
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// insert datas in new join table
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$this->addSql('INSERT INTO persons_accompanying_periods (person_id, accompanyingperiod_id) '
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. 'SELECT person_id, id as accompagnying_period_id FROM chill_person_accompanying_period WHERE person_id IS NOT NULL');
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// drop column
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$this->addSql('DROP INDEX idx_64a4a621217bbb47');
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$this->addSql('ALTER TABLE chill_person_accompanying_period DROP CONSTRAINT fk_64a4a621217bbb47');
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$this->addSql('ALTER TABLE chill_person_accompanying_period DROP person_id');
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}
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/**
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* The distinct clause makes that for each group of duplicates, it keeps only the first row in the returned result set.
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* Then we have only few lost datas. Lost datas: when many persons for one AccompanyingPeriod (keep only first person)
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*/
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public function down(Schema $schema) : void
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{
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// add column
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$this->addSql('ALTER TABLE chill_person_accompanying_period ADD person_id INT DEFAULT NULL');
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$this->addSql('ALTER TABLE chill_person_accompanying_period ADD CONSTRAINT fk_64a4a621217bbb47 FOREIGN KEY (person_id) REFERENCES chill_person_person (id) NOT DEFERRABLE INITIALLY IMMEDIATE');
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$this->addSql('CREATE INDEX idx_64a4a621217bbb47 ON chill_person_accompanying_period (person_id)');
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// insert datas in existing table
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$this->addSql('UPDATE chill_person_accompanying_period AS ap '
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. 'SET person_id = jt.person_id '
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. 'FROM ( '
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. 'SELECT DISTINCT ON (accompanyingperiod_id) accompanyingperiod_id AS id, person_id FROM persons_accompanying_periods '
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. 'ORDER BY id, person_id ASC '
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. ') AS jt '
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. 'WHERE ap.id = jt.id');
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// drop join table
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$this->addSql('DROP TABLE persons_accompanying_periods');
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}
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}
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