Question

对于deleteBarDocument()，我希望不实施

$this->getModel()->updateParentAudit($this->audit_table,$_POST['id']);

在deleteDocumentHelper()辅助方法中，但实现其他内容，例如

$this->bla($_POST['id']);
$this->blabla($_POST['id'],$_POST['doc_id']);

如何为deleteDocumentHelper()延长deleteBarDocument()，但保留deleteFooDocument()的原样？

通常，我会替换

$this->getModel()->updateParentAudit($this->audit_table,$_POST['id']);

带

$this->doSomething();

并使用所需的任何代码创建doSomething()方法。可能采用这种方法会影响deleteFooDocument()和deleteBarDocument()，这是不可取的。

或者我应该通过辅助方法传递一个匿名函数？我谨慎这样做，因为我已经警告过应该谨慎使用匿名功能。

<?php
class parentController
{
    protected function deleteDocumentHelper($type){
        if(isset($_POST['id'],$_POST['doc_id'])){
            if(documents::removeDocument($type,$_POST['doc_id'],$_POST['id']))
            {
                $success=1;
                //Ability to replace the following line with one or more lines
                $this->getModel()->updateParentAudit($this->audit_table,$_POST['id']);
            }
            else {$success=0;}
            header('Content-Type: application/json;');
            $this->dontCache();
            echo(json_encode(array('success'=>$success)));
        }
        else {exit($this->missingPage());}        
    }
}  

class childController extends parentController
{
    public function deleteFooDocument(){$this->deleteDocumentHelper('foo');}
    public function deleteBarDocument(){$this->deleteDocumentHelper('bar');}
}

//Application creates childController object, and evokes apprpropriate method based on GET/POST  
?>

Answer 1

你说：

通常，我会替换
$this->getModel()->updateParentAudit($this->audit_table,$_POST['id']);
与
$this->doSomething();
并使用所需的任何代码创建doSomething()方法。可能采用这种方法会影响deleteFooDocument()和deleteBarDocument()，这是不可取的。

但是，为什么不按照以下方式？

class parentController
{
    protected function doSomething()
    {
        $this->getModel()->updateParentAudit($this->audit_table,$_POST['id']);
    }

    protected function deleteDocumentHelper($type){
        if(isset($_POST['id'],$_POST['doc_id'])){
            if(documents::removeDocument($type,$_POST['doc_id'],$_POST['id']))
            {
                $success=1;
                //Ability to replace the following line with one or more lines
                $this->doSomething();
            }
            (...)
        }
        else {exit($this->missingPage());}        
    }
}  

class childController extends parentController
{
    private $somethingElse = False;

    protected function doSomething()
    {
        if( $this->somethingElse )
        {
            // Your deleteBar code 
        }
        else
        {
            parent::doSomething();
        }
    }

    protected function deleteDocumentHelper( $type, $somethingElse=False )
    {
        $this->somethingElse = $somethingElse;
        parent::deleteDocumentHelper( $type );
    }

    public function deleteFooDocument(){$this->deleteDocumentHelper('foo');}
    public function deleteBarDocument(){$this->$this->deleteDocumentHelper('bar',1);}
}

使用这种方法，您可以基本上保持不变的父类，并仅在需要时应用不同的代码。

扩展PHP辅助方法

1 个答案: