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<?php namespace Xethron\MigrationsGenerator\Generators; |
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class ForeignKeyGenerator { |
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/** |
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* @var string |
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*/ |
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protected $table; |
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/** |
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* Get array of foreign keys |
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* |
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* @param string $table Table Name |
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* @param \Doctrine\DBAL\Schema\AbstractSchemaManager $schema |
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* @param $ignoreForeignKeyNames |
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* |
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* @return array |
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*/ |
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public function generate($table, $schema, $ignoreForeignKeyNames) |
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{ |
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$this->table = $table; |
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$fields = []; |
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$foreignKeys = $schema->listTableForeignKeys($table); |
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if ( empty( $foreignKeys ) ) return array(); |
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foreach ( $foreignKeys as $foreignKey ) { |
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$fields[] = [ |
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'name' => $this->getName($foreignKey, $ignoreForeignKeyNames), |
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'field' => $foreignKey->getLocalColumns()[0], |
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'references' => $foreignKey->getForeignColumns()[0], |
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'on' => $foreignKey->getForeignTableName(), |
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'onUpdate' => $foreignKey->hasOption('onUpdate') ? $foreignKey->getOption('onUpdate') : 'RESTRICT', |
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'onDelete' => $foreignKey->hasOption('onDelete') ? $foreignKey->getOption('onDelete') : 'RESTRICT', |
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]; |
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} |
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return $fields; |
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} |
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/** |
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* @param $foreignKey |
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* @param bool $ignoreForeignKeyNames |
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* |
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* @return null |
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*/ |
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private function getName($foreignKey, $ignoreForeignKeyNames) { |
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if ($ignoreForeignKeyNames or $this->isDefaultName($foreignKey)) { |
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return null; |
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} |
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return $foreignKey->getName(); |
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} |
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/** |
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* @param $foreignKey |
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* |
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* @return bool |
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*/ |
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private function isDefaultName($foreignKey) { |
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return $foreignKey->getName() === $this->createIndexName($foreignKey->getLocalColumns()[0]); |
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} |
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/** |
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* Create a default index name for the table. |
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* |
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* @param string $column |
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* @return string |
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*/ |
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protected function createIndexName($column) |
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{ |
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$index = strtolower($this->table.'_'.$column.'_foreign'); |
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return str_replace(array('-', '.'), '_', $index); |
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} |
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} |
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