Question

我在Wordpress中安装了Eloquent以进行数据库操作。我的composer.json文件如下所示：

{
  "require": {
    "illuminate/database": "~5.0.0",
    "illuminate/events": "~5.0.0",
  },
  "autoload": {
    "psr-4": {
      "App\\": "wp-content/themes/tkh/src/"
    }
  }
}

我在eloquent.php中创建了数据库连接：

<?php 
require __DIR__.'/../vendor/autoload.php';
/*
 * Configure Eloquent (called Capsule when used alone)
 */

$capsule = new \Illuminate\Database\Capsule\Manager;
$capsule->addConnection([
    'driver'    => 'mysql',
    'host'      => 'localhost',
    'database'  => 'tkh',
    'username'  => 'root',
    'password'  => 'root',
    'charset'   => 'utf8',
    'collation' => 'utf8_unicode_ci',
    'prefix'    => '',
]);
$capsule->setEventDispatcher(new \Illuminate\Events\Dispatcher(new \Illuminate\Container\Container));
$capsule->setAsGlobal();
$capsule->bootEloquent();

现在大多数事情（保存，删除，hasMany等方法）似乎工作正常。但是在DB外观上调用静态方法不起作用。

在数据库外观上调用select方法的简化示例：

<?php
    use Illuminate\Support\Facades\DB as DB;
    if(isset($_POST['select']))
    {
        $schedule = DB::select('select 567567 from schedule where id = 77');
    }
?>
<form action="" method="post">
<input type="submit" name="select" value="select"/>
</form>

当我点击选择时，我得到了这个致命的错误：

[28-Sep-2017 11:04:03 UTC] PHP Fatal error:  Call to a member function select() on null in C:\xampp\htdocs\tkh\wp-content\themes\tkh\vendor\illuminate\support\Facades\Facade.php on line 210

[28-Sep-2017 11:04:03 UTC] PHP Stack trace:

[28-Sep-2017 11:04:03 UTC] PHP   1. {main}() C:\xampp\htdocs\tkh\index.php:0

[28-Sep-2017 11:04:03 UTC] PHP   2. require() C:\xampp\htdocs\tkh\index.php:17

[28-Sep-2017 11:04:03 UTC] PHP   3. require_once() C:\xampp\htdocs\tkh\wp-blog-header.php:19

[28-Sep-2017 11:04:03 UTC] PHP   4. include() C:\xampp\htdocs\tkh\wp-includes\template-loader.php:74

[28-Sep-2017 11:04:03 UTC] PHP   5. Illuminate\Support\Facades\DB::select() C:\xampp\htdocs\tkh\wp-content\themes\tkh\page-schedules.php:6

[28-Sep-2017 11:04:03 UTC] PHP   6. Illuminate\Support\Facades\Facade::__callStatic() C:\xampp\htdocs\tkh\wp-content\themes\tkh\page-schedules.php:6

在以下函数中，Illuminate \ Support \ Facades \ Facade中的案例1行失败：

public static function __callStatic($method, $args)
{
    $instance = static::getFacadeRoot();

    switch (count($args))
    {
        case 0:
            return $instance->$method();

        case 1:
            return $instance->$method($args[0]);

当我调试那段代码时，我得到了这些本地变量：

Locals
$args array[1]
    $args[0] "select 567567 from schedule where id = 77"
    $instance null
$method "select"
    ::object [Illuminate\Support\Facades\Facade]
    ::app null
        ::resolvedInstancearray [1]
        ::resolvedInstance['db'] null

因此$ instance var为null并导致异常。我猜这是方法需要执行的db实例，我需要在我的eloquent.php文件中创建额外的东西，但是搜索和研究的时间没有发现任何东西，所以我想知道是否有人可以放弃一些点亮这个$ instance变量是什么以及如何填充它？

非常感谢！

Answer 1

好的，在这里找到答案：https://github.com/illuminate/database

如果你想在没有Laravel的情况下运行Eloquent，请使用Capsule而不是DB facade，如下所示：

use Illuminate\Database\Capsule\Manager as Capsule;

$capsule = new Capsule;

$results = Capsule::select('select * from users where id = ?', array(1));

WordPress的Eloquent - 在DB Facade上调用静态方法的null成员函数

1 个答案: