1<?php
2
3namespace Illuminate\Database\Schema\Grammars;
4
5use Doctrine\DBAL\Schema\AbstractSchemaManager as SchemaManager;
6use Doctrine\DBAL\Schema\Column;
7use Doctrine\DBAL\Schema\TableDiff;
8use Illuminate\Database\Connection;
9use Illuminate\Database\Schema\Blueprint;
10use Illuminate\Support\Fluent;
11
12class RenameColumn
13{
14    /**
15     * Compile a rename column command.
16     *
17     * @param  \Illuminate\Database\Schema\Grammars\Grammar  $grammar
18     * @param  \Illuminate\Database\Schema\Blueprint  $blueprint
19     * @param  \Illuminate\Support\Fluent  $command
20     * @param  \Illuminate\Database\Connection  $connection
21     * @return array
22     */
23    public static function compile(Grammar $grammar, Blueprint $blueprint, Fluent $command, Connection $connection)
24    {
25        $schema = $connection->getDoctrineSchemaManager();
26        $databasePlatform = $schema->getDatabasePlatform();
27        $databasePlatform->registerDoctrineTypeMapping('enum', 'string');
28
29        $column = $connection->getDoctrineColumn(
30            $grammar->getTablePrefix().$blueprint->getTable(), $command->from
31        );
32
33        return (array) $databasePlatform->getAlterTableSQL(static::getRenamedDiff(
34            $grammar, $blueprint, $command, $column, $schema
35        ));
36    }
37
38    /**
39     * Get a new column instance with the new column name.
40     *
41     * @param  \Illuminate\Database\Schema\Grammars\Grammar  $grammar
42     * @param  \Illuminate\Database\Schema\Blueprint  $blueprint
43     * @param  \Illuminate\Support\Fluent  $command
44     * @param  \Doctrine\DBAL\Schema\Column  $column
45     * @param  \Doctrine\DBAL\Schema\AbstractSchemaManager  $schema
46     * @return \Doctrine\DBAL\Schema\TableDiff
47     */
48    protected static function getRenamedDiff(Grammar $grammar, Blueprint $blueprint, Fluent $command, Column $column, SchemaManager $schema)
49    {
50        return static::setRenamedColumns(
51            $grammar->getDoctrineTableDiff($blueprint, $schema), $command, $column
52        );
53    }
54
55    /**
56     * Set the renamed columns on the table diff.
57     *
58     * @param  \Doctrine\DBAL\Schema\TableDiff  $tableDiff
59     * @param  \Illuminate\Support\Fluent  $command
60     * @param  \Doctrine\DBAL\Schema\Column  $column
61     * @return \Doctrine\DBAL\Schema\TableDiff
62     */
63    protected static function setRenamedColumns(TableDiff $tableDiff, Fluent $command, Column $column)
64    {
65        $tableDiff->renamedColumns = [
66            $command->from => new Column($command->to, $column->getType(), self::getWritableColumnOptions($column)),
67        ];
68
69        return $tableDiff;
70    }
71
72    /**
73     * Get the writable column options.
74     *
75     * @param  \Doctrine\DBAL\Schema\Column  $column
76     * @return array
77     */
78    private static function getWritableColumnOptions(Column $column)
79    {
80        return array_filter($column->toArray(), function (string $name) use ($column) {
81            return method_exists($column, 'set'.$name);
82        }, ARRAY_FILTER_USE_KEY);
83    }
84}
85