Laravel 5.2在列上为JSON构建查询

Question

我正在使用MySql 5.7.14和laravel 5.2.
我的表'用户'JSON看起来像这样:

[{
    "id": "1",
    "options": "{\"religion\": \"R'hllor, the Lord of Light\", \"favorite_color\": \"red\"}"
}]

当我通过laravel查询时:

$ii =\DB::table('user')->where('options->favorite_color', 'red')->get();

我面临着错误

SQLSTATE[HY000]: General error: 2036 (SQL: select * from `user` where `options`->"$.favorite_color" = red)

当我运行相同的查询时

SELECT * FROM `user` WHERE options->"$.favorite_color"='red'

在phpmyadmin它没有给出任何错误它工作正常.谁能告诉我可能是什么问题？提前致谢.

Answer 1

我得到了解决方案.要使用laravel 5.2使用MySQL 5.7.8及更高版本,需要将PDO选项添加到config/database.php中的连接,如下所示.

 'mysql' => [
  'driver'    => 'mysql',
  'host'      => env('DB_HOST', 'localhost'),
  'database'  => env('DB_DATABASE', 'db_name'),
  'username'  => env('DB_USERNAME', 'root'),
  'password'  => env('DB_PASSWORD', ''),
  'charset'   => 'utf8',
  'collation' => 'utf8_unicode_ci',
  'prefix'    => '',
  'strict'    => false,
   'options'   => array(
           PDO::ATTR_CASE => PDO::CASE_LOWER,
           PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
           PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
           PDO::ATTR_STRINGIFY_FETCHES => true,
           PDO::ATTR_EMULATE_PREPARES => true,
       ),

],

然后运行php artisan config:cache.它运作良好.vendor/laravel/framework/src/illuminate/Database/Connectors/Connector.php PDO选项就像

protected $options = [
    PDO::ATTR_CASE => PDO::CASE_NATURAL,
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
    PDO::ATTR_STRINGIFY_FETCHES => false,
    PDO::ATTR_EMULATE_PREPARES => false,
];

PDO :: ATTR_STRINGIFY_FETCHES&PDO :: ATTR_EMULATE_PREPARES需要在database.php中被覆盖.