我想扩展MySqlGrammer,以便在我的工作台包中使用数据库时为MySql列类型'set'提供支持。
在寻找其他人尝试这样做的过程中,我发现了一些看似符合我想要的例子:
我尝试复制上面的前两种方法,但这两种方法在我尝试迁移时都会产生错误。第一种方法给出:
[Illuminate\Database\QueryException]
SQLSTATE[HY093]: Invalid parameter number (SQL: select * from information_schema.tables where table_schema = services_migrations and table_name = ?)
第二种方法给出:
[ErrorException]
Argument 1 passed to Illuminate\Database\Connection::__construct() must be an instance of PDO, array given, ...
第三种方法乍一看似乎工作正常,它在我的数据库表中创建了正确的列,但是当我在配置中使用表前缀时,此方法无法使用表前缀,我不得不手动为我的表名添加前缀让它发挥作用。
我很确定上面示例中的重写类是正确的方法,问题似乎是如何正确绑定和覆盖/扩展laravel以通知它类更改。目前我正在尝试在我的服务提供者register()方法中执行此操作,这在我看来是放置此代码的最明显的地方。
作为参考,我使用的代码如下所示:
file:workbench / iccle / quake3 / src / Iccle / Quake3 / Database / Schema / Grammars / MySqlGrammar.php
<?php
namespace Iccle\Quake3\Database\Schema\Grammars;
class MySqlGrammar extends \Illuminate\Database\Schema\Grammars\MySqlGrammar
{
protected function typeSet(\Illuminate\Support\Fluent $column)
{
return "set('".implode("', '", $column->allowed)."')";
}
}
file:workbench / iccle / quake3 / src / Iccle / Quake3 / Database / Schema / Blueprint.php
<?php namespace Iccle\Quake3\Database\Schema;
class Blueprint extends \Illuminate\Database\Schema\Blueprint
{
public function set($column, array $allowed)
{
return $this->addColumn('set', $column, compact('allowed'));
}
}
file:workbench / iccle / quake3 / src / Iccle / Quake3 / Database / Schema / Builder.php
<?php
namespace Iccle\Quake3\Database\Schema;
class Builder extends \Illuminate\Database\Schema\Builder
{
protected function createBlueprint($table, Closure $callback = null)
{
return new \Iccle\Quake3\Database\Schema\Blueprint($table, $callback);
}
}
file:workbench / iccle / quake3 / src / Iccle / Quake3 / Database / MySqlConnection.php
<?php namespace Iccle\Quake3\Database;
class MySqlConnection extends \Illuminate\Database\MySqlConnection
{
protected function getDefaultSchemaGrammar()
{
return $this->withTablePrefix(new \Iccle\Quake3\Database\Schema\Grammars\MySqlGrammar);
}
public function getSchemaBuilder()
{
if (is_null($this->schemaGrammar)) { $this->useDefaultSchemaGrammar(); }
return new \Iccle\Quake3\Database\Schema\Builder($this);
}
}
文件:workbench / iccle / quake3 / src / Iccle / Quake3 / Quake3ServiceProvider.php
<?php namespace Iccle\Quake3;
use \Illuminate\Support\ServiceProvider;
class Quake3ServiceProvider extends ServiceProvider {
protected $defer = false;
public function boot()
{
$this->package('iccle/quake3');
require_once(__DIR__ . '/../../routes.php');
require_once(__DIR__ . '/../../filters.php');
}
public function register()
{
$app = $this->app;
//Method 1, causes exceptions during migrations
// $this->app->singleton('db.connection.mysql', function($app, $parameters)
// {
// list($connection, $database, $prefix, $config) = $parameters;
// return new \Iccle\Quake3\Database\MySqlConnection($connection, $database, $prefix, $config);
// });
//Method 2, doomed to failure because it does not pass enough parameters to \Illuminate\Database\Connection::__construct
//$this->app->resolving('db', function($db) {
// $db->extend('mysql', function($config) {
// return new \Iccle\Quake3\Database\MySqlConnection($config);
// });
//});
}
public function provides()
{
return array();
}
}
我的问题很简单,在我的服务提供商中通知laravel我所覆盖的数据库类的建议/正确方法是什么,非常感谢任何帮助。
答案 0 :(得分:1)
请看一下我刚才写的包裹 https://github.com/rafis/schema-extended
答案 1 :(得分:1)
我遇到了同样的错误,所以其他人可能会觉得这很有用。 Laravel有一个特殊的Builder for Mysql,它不是默认的构建器。因此,在您的代码中,您需要指定这个特殊的构建器:
file:workbench / iccle / quake3 / src / Iccle / Quake3 / Database / Schema / Builder.php
<?php
namespace Iccle\Quake3\Database\Schema;
class Builder extends \Illuminate\Database\Schema\MySqlBuilder
{
protected function createBlueprint($table, Closure $callback = null)
{
return new \Iccle\Quake3\Database\Schema\Blueprint($table, $callback);
}
}
这应该可以做到!
济