独立使用Illuminate\Database，并添加SQL日志功能

0x00 前言

slim框架：是一个微型框架，官方文档地址
IlluminateDatabase：是一个非常非常优秀的ORM类库（虽然我只用查询构造器），GitHub
composer: 是PHP的一个依赖管理工具。

0x01 独立使用IlluminateDatabase

1. 使用composer 安装

使用 composer 安装，直接在项目根目录的命令行里，执行

composer require "Illuminate\Database"

或者在根目录的 composer.json 的 require 中添加 IlluminateDatabase
如何要监听 SQL ，还需要添加 illuminate/Events

...
"require": {
    ...
    "illuminate/database": "5.5.*",
    "illuminate/Events": "5.5.*",
    ...
  },
...

当前我使用的版本是 v5.5 的,
然后执行 composer update ,来完成其安装。

2. 在框架中shiyong

我在slim中的使用，并没有把它加入slim的容器中，而是使用官方推荐的方式。

$capsule = new Illuminate\Database\Capsule\Manager;
// 创建链接
$capsule->addConnection($container->get('settings')['database']);

$capsule->setEventDispatcher(new Dispatcher(new IlluminateContainer));

// 设置全局静态可访问DB
$capsule->setAsGlobal();

// 启动Eloquent （如果只使用查询构造器，这个可以注释）
$capsule->bootEloquent();

上面的$container->get('settings')['database']是一个数组，里面是数据库连接参数

  [
        'driver'    => 'mysql',
        'host'      => 'localhost',
        'database'  => 'database',
        'username'  => 'root',
        'password'  => 'password',
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
    ]

这样使用IlluminateDatabase，我们就没必要每次都要从容器中获取database的链接了。
可以直接类似下面的使用

use Illuminate\Database\Capsule\Manager as DB;

$obj_list = DB::table('group_member as m')
    ->select($select)
    ->leftJoin($this->table . ' as g', 'g.id', '=', 'm.group_id')
    ->where($where)
    ->get();

而不是每次都要

$c->get('database')->connection()->table('XXX')->get(['XXX','XXX']);

虽然整体没有降低耦合度，但是一般项目中，没有频繁更改database类库的可能性吧，，而且从代码层上看，更干净，更整洁（可能这只是我个人的观点0.0）。

0x02 添加SQL日志

所谓的SQL日志，就是所有的sql执行的记录。
形如：

2018-06-23 10:59:36 select `g`.`name` as `groupname`, `g`.`id`, `g`.`image` as `avatar` from `group_member` as `m` left join `group` as `g` on `g`.`id` = `m`.`group_id` where (`g`.`is_deleted` = '0' and `m`.`is_deleted` = '0' and `m`.`uid` = '1')  [36.18 ms]

这种，包含执行的时间，具体的SQL，还有执行所需时间。这对于开发的时候排查定位bug，有很大的帮助。也是因为昨天公司项目（lumen框架）中利用SQL日志准确的分析出bug，然后就迫不及待的为自己做的小玩意添加这个功能。

其实，IlluminateDatabase 已经做了这个功能，配置，开启添加具体的SQL记录操作。

在加载项目启动的路径中添加即可，亦可以放在全局的路由的中间件中。

DB::connection('default')->listen(function ($query) use ($logger) {
    $sql = date('Y-m-d H:i:s',time())."\n" . vsprintf(str_replace("?", "'%s'", $query->sql), $query->bindings) . " \n[" . $query->time . ' ms] ';
    // 把SQL写入到日志文件中
    $logger->debug($sql);
});

至此，就完成了 IlluminateDatabase 的安装、使用以及SQL日志的添加。

已有 3 条评论

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