Yii使用DbTarget实现日志功能的示例代码

一：在配置文件的log组件中配置dbtarget

'log' => [
 'tracelevel' => yii_debug ? 3 : 0,
 'targets' => [
  [
   'class' => 'yii\log\filetarget',
   'levels' => ['error', 'warning'],
  ],
  'test' => [
   'class' => 'yii\log\dbtarget',//datarget类
   'logtable' => '{{%test_log}}',//日志表
   'levels' => ['error', 'info', 'warning'],//日志等级
  ],
 ],
],

二：生成日志表

在项目目录下执行如下命令生成日志表

php yii migrate --migrationpath=@yii/log/migrations/

三：使用日志

在需要使用日志的地方使用

yii::info()

四：自定义dbtarget日志

1：首先创建一个自定义的日志表

(1)在项目目录下执行

php yii migrate/create create_test_log

(2)：在创建的migrate文件下编写创建数据库的迁移脚本

<?php
use yii\db\migration;
/**
 * class m200720_091126_create_test_log
 */
class m200720_091126_create_test_log extends migration
{
 /**
  * {@inheritdoc}
  */
 public function safeup()
 {
  $this->createtable('{{%test_log}}', [
   'id' => $this->bigprimarykey(),
   'level' => $this->integer()->notnull()->comment('日志等级'),
   'category' => $this->string(100)->notnull()->comment('分类名称'),
   'prefix' => $this->text(),
   'route' => $this->string(100)->notnull()->comment('路由'),
   'method' => $this->string(20)->notnull()->comment('请求方式'),
   'app' => $this->string(20)->comment('请求应用'),
   'module' => $this->string(20)->comment('请求模块'),
   'request' => $this->text()->comment('请求参数'),
   'status' => $this->string(10)->notnull()->comment('状态码'),
   'message' => $this->text()->comment('日志内容'),
   'request_at' => $this->double()->notnull()->comment('请求时间'),
   'ip' => $this->string(63)->comment('请求ip'),
  ], 'character set utf8mb4 collate utf8mb4_unicode_ci engine=innodb comment=\'请求日志表\'');
  //增加索引
  $this->createindex('idx_log_level', '{{%test_log}}', 'level');
  $this->createindex('idx_log_category', '{{%test_log}}', 'category');
  $this->createindex('idx_log_route', '{{%test_log}}', 'route');
  $this->createindex('idx_log_method', '{{%test_log}}', 'method');
  $this->createindex('idx_log_status', '{{%test_log}}', 'status');
 }
 /**
  * @inheritdoc
  */
 public function safedown()
 {
  $this->droptable('{{%test_log}}');
 }
}

(3)：执行如下命令生成dbtarget日志表

php yii migrate

2：编写一个dbtarget类来继承yiilogdbtarget类

<?php
namespace app\components;
use yii;
use yii\helpers\vardumper;
use yii\log\logruntimeexception;
use yii\web\httpexception;
use yii\web\request;
/**
 * dbtarget stores log messages in a database table.
 *
 * @see yii\log\dbtarget
 *
 * @author wangjian
 * @since 1.0
 */
class dbtarget extends \yii\log\dbtarget
{
 /**
  * @inheritdoc
  */
 public $categories = [
  'application',
  'yii\web\httpexception:*',
 ];
 /**
  * @inheritdoc
  */
 public $except = [
  // 'yii\web\httpexception:404',
 ];
 /**
  * @inheritdoc
  */
 public $logvars = ['_get', '_post'];
 /**
  * @var string 用户组件id
  */
 public $usercomponentid = 'user';
 /**
  * @inheritdoc
  */
 public function collect($messages, $final)
 {
  $this->messages = array_merge($this->messages, static::filtermessages($messages, $this->getlevels(), $this->categories, $this->except));
  $count = count($this->messages);
  if ($count > 0 && ($final || $this->exportinterval > 0 && $count >= $this->exportinterval)) {
   $oldexportinterval = $this->exportinterval;
   $this->exportinterval = 0;
   $this->export();
   $this->exportinterval = $oldexportinterval;
   $this->messages = [];
  }
 }
 /**
  * @inheritdoc
  */
 public function getmessageprefix($message)
 {
  if ($this->prefix !== null) {
   return call_user_func($this->prefix, $message);
  }
  if (yii::$app === null) {
   return '';
  }
  $ip = $this->getip();
  $ip = empty($ip) ? '-' : $ip;
  return "[$ip]";
 }
 /**
  * @inheritdoc
  */
 public function export()
 {
  if ($this->db->gettransaction()) {
   $this->db = clone $this->db;
  }
  $tablename = $this->db->quotetablename($this->logtable);
  $sql = "insert into $tablename ([[level]], [[category]], [[prefix]], [[route]], [[method]], [[app]], [[module]], [[request]], [[status]], [[message]], [[request_at]], [[ip]])
    values (:level, :category, :prefix, :route, :method, :app, :module, :request, :status, :message, :request_at, :ip)";
  $command = $this->db->createcommand($sql);
  $request = yii::$app->getrequest();
  list($route, $params) = $request->resolve();
  $method = $request->getmethod();
  $module = yii::$app->controller->module->id;
  $route = str_replace("{$module}/", '', $route);
  foreach ($this->messages as $message) {
   list($text, $level, $category, $timestamp) = $message;
   $statuscode = 200;
   if (!is_string($text)) {
    if ($text instanceof \throwable || $text instanceof \exception) {
     $statuscode = $text instanceof httpexception ? $text->statuscode : 500;
     $text = $text->getmessage();
    } else {
     $text = vardumper::export($text);
    }
   }
   if ($command->bindvalues([
     ':level' => $level,
     ':category' => $category,
     ':prefix' => $this->getmessageprefix($message),
     ':route' => $route,
     ':method' => $method,
     ':app' => yii::$app->id,
     ':module' => $module,
     ':request' => $this->getcontextmessage(),
     ':status' => $statuscode,
     ':message' => $text,
     ':request_at' => $timestamp,
     ':ip' => $this->getip(),
    ])->execute() > 0) {
    continue;
   }
   throw new logruntimeexception('unable to export log through database!');
  }
 }
 /**
  * 获取当前ip
  */
 protected function getip()
 {
  $request = yii::$app->getrequest();
  return $request instanceof request ? $request->getuserip() : '';
 }
}

3：在配置文件中将yiilogdbtarget类改成我们自定义的类

'log' => [
 'tracelevel' => yii_debug ? 3 : 0,
 'targets' => [
  [
   'class' => 'yii\log\filetarget',
   'levels' => ['error', 'warning'],
  ],
  'test' => [
   'class' => 'app\components\dbtarget',
   'logtable' => '{{%test_log}}',
   'levels' => ['error', 'info', 'warning'],
  ],
 ],
],

4：使用dbtarget日志

同样的使用yii::info来记录日志

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