65 lines
2.0 KiB
PHP
65 lines
2.0 KiB
PHP
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<?php
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namespace Engelsystem\Migrations;
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use Illuminate\Database\Schema\Blueprint;
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trait ChangesReferences
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{
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/**
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* @param string $fromTable
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* @param string $fromColumn
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* @param string $targetTable
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* @param string $targetColumn
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* @param string $type
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*/
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protected function changeReferences($fromTable, $fromColumn, $targetTable, $targetColumn, $type)
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{
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$references = $this->getReferencingTables($fromTable, $fromColumn);
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foreach ($references as $reference) {
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/** @var stdClass $reference */
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$this->schema->table($reference->table, function (Blueprint $table) use ($reference) {
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$table->dropForeign($reference->constraint);
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});
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$this->schema->table($reference->table,
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function (Blueprint $table) use ($reference, $targetTable, $targetColumn, $type) {
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$table->{$type}($reference->column)->change();
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$table->foreign($reference->column)
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->references($targetColumn)->on($targetTable)
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->onDelete('cascade');
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});
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}
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}
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/**
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* @param string $table
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* @param string $column
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* @return array
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*/
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protected function getReferencingTables($table, $column): array
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{
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return $this->schema
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->getConnection()
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->select(
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'
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SELECT
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`TABLE_NAME` as "table",
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`COLUMN_NAME` as "column",
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`CONSTRAINT_NAME` as "constraint"
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FROM information_schema.KEY_COLUMN_USAGE
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WHERE REFERENCED_TABLE_SCHEMA = ?
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AND REFERENCED_TABLE_NAME = ?
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AND REFERENCED_COLUMN_NAME = ?
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',
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[
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$this->schema->getConnection()->getDatabaseName(),
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$table,
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$column,
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]
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);
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}
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}
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