yii2-presenter
参考 laracasts/presenter 实现presenter层,
调整了调用方式并新增了一个脚手架工具。, (*1)
个人理解Presenter是提供给view针对model的一种横向扩展方式,
就实现来说是对behavior的简化版。, (*2)
使用方式
presenter例子:, (*3)
use chenqd\presenter\BasePresenter;
/**
* @mixin \app\models\User
* @property \app\models\User $entity
*/
class UserPresenter extends BasePresenter {
public function fullName()
{
return $this->first . ' ' . $this->last;
}
public function first()
{
return ucfirst($this->entity->first);
}
}
拓展类实现:, (*4)
//不一定局限于model
use chenqd\presenter\PresentableTrait;
class User {
use PresentableTrait;
protected $presenter = UserPresenter::class;
public $first = 'php';
public $last = 'world';
}
view调用: (实现很简单可以简单翻阅下源码), (*5)
<h1>hello <?= $user->present()->fullName ?>！</h1>
or
<h1>hello <?= $user->present('fullName') ?>！</h1>
hello <?= $user->present('first') ?>！
hello <?= $user->present()->first ?>！
动态切换persenter
Model类处理, (*6)
use chenqd\presenter\PresentableTrait;
class User {
use PresentableTrait;
public function presenterMap()
{
return [
'default' => UserPresenter::class,
'api' => UserPresenter::class,
];
}
public $first = 'php';
public $last = 'world';
}
view调用:, (*7)
<h1>hello <?= $user->present()->fullName ?>！</h1>
<h1>hello <?= $user->presenter()->fullName ?>！</h1>
<h1>hello <?= $user->presenter('api')->fullName ?>！</h1>
or
<h1>hello <?= $user->presenter('api', 'fullName') ?>！</h1>
hello <?= $user->presenter('api', 'first') ?>！
hello <?= $user->presenter(UserPresenter::class)->first ?>！
脚手架
进入console对应的配置文件添加, (*8)
//advance模板: common/config/main.php
//basic模板: config/console.php
return [
//...其它配置
'controllerMap' => [
'presenter'=>\chenqd\presenter\PresenterController::class,
],
//...其它配置
];
如果要指定生成文件位置, (*9)
'controllerMap' => [
'presenter' => [
'class' => \chenqd\presenter\PresenterController::class,
'base_path' => '@common/models',
'namespace' => 'common\models',
],
],
使用, (*10)
./yii presenter/create User
其它
默认脚手架生成presenter到models/presenters文件下
(高级模板在common/models/presenters),
在model中使用时可以不指定 $presenter, (*11)
use chenqd\presenter\PresentableTrait;
class User extend ActiveRecord
{
use PresentableTrait;
}
TODO
- [ ] 多model关联的实现方案
- [ ] 由Present发起调用的实现方案
Wallogit.com
