从zend框架2中的另一个模块获取数据

时间:2014-01-07 17:34:43

标签: php zend-framework2

我安装了SkeletonApplication并从ZF2 Docs创建了默认的相册模块。 http://framework.zend.com/manual/2.2/en/user-guide/modules.html

之后,我创建了类别模块的类别模块。 以下是它们的字段:category_id和category_name

然后为专辑表添加额外字段:cat_id 如您所知,我正在尝试对专辑进行分类。

然后我将此代码添加到AlbumForm.php文件中,用于字段集从selectbox中选择cat_id

$this->add(array(
    'type' => 'Zend\Form\Element\Select',
    'name' => 'cat_id',
    'options' => array(
            'value_options' => $selectOptions,
        'label' => 'Category',
     ),
)); 

现在,我怎样才能将category_name和category_id从另一个类别模块转到专辑模块?

2 个答案:

答案 0 :(得分:2)

如果我们能够看到您的类别模块文件的代码,那将是件好事。

首先,您应该考虑是否确实需要一个新的模块,因为它可能应该在同一个模块中,只需要创建新的模型类和新视图(如果有的话)。无论如何,在这一点上它并不重要。

如果你在我的Album模块中使用SkeletonApplication,在Module.php中你有这个代码:

 public function getServiceConfig()
    {
        return array(
                'factories' => array(
                        'Album\Model\AlbumTable' =>  function($sm) {
                            $tableGateway = $sm->get('AlbumTableGateway');
                            $table = new AlbumTable($tableGateway);
                            return $table;
                        },
                        'AlbumTableGateway' => function ($sm) {
                            $dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
                            $resultSetPrototype = new ResultSet();
                            $resultSetPrototype->setArrayObjectPrototype(new Album());
                            return new TableGateway('album', $dbAdapter, null, $resultSetPrototype);
                        },
                ),
        );
    }

然后可能你为类别表创建了类似的东西,比如

 public function getServiceConfig()
    {
        return array(
                'factories' => array(
                        'Category\Model\CategoryTable' =>  function($sm) {
                            $tableGateway = $sm->get('CategoryTableGateway');
                            $table = new CategoryTable($tableGateway);
                            return $table;
                        },
                        'CategoryTableGateway' => function ($sm) {
                            $dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
                            $resultSetPrototype = new ResultSet();
                            $resultSetPrototype->setArrayObjectPrototype(new Album());
                            return new TableGateway('category', $dbAdapter, null, $resultSetPrototype);
                        },
                ),
        );
    }

让我知道它是否有很大不同。

由于所有配置都已合并,因此无论您是否在其他模块中,您的服务管理器都可以在您的控制器中找到Category \ Model \ CategoryTable。

所以,你必须修改你的AlbumForm类,所以例如在构造函数中你可以传递依赖项,例如servicemanager或'Category \ Model \ CategoryTable',所以当你需要检索$ selectOptions列表时,你可以访问它以进行任何查询。

此外,您可以从samsonasik查看更精彩的解决方案,但可能更难理解。

而且,您可以从jamescarr查看此blog postcode,以达到您所需要的相同水平。 这很容易理解,这是一个很好的解决方案。

答案 1 :(得分:2)

事实上,您不必为您的类别模型创建新模块 =>把它放在你的相册模块中:))

繁殖模块不是一个好主意......每个表一个太多了:D

在我看到你的先例aswer之后你仍然遇到麻烦时,我编写并评论了所有代码,以便你能更好地理解:)

ServiceManager工厂是一个非常重要的概念,非常了解!

因此,您首先必须在module.php文件中进行出厂配置:

namespace Album;

use Zend\Db\ResultSet\ResultSet;
use Zend\Db\TableGateway\TableGateway;

use Album\Model\Album;
use Album\Model\AlbumTable;
use Album\Model\Category;
use Album\Model\CategoryTable;

class Module
{

    public function getServiceConfig()
    {
        return array (
            'factories' => array(
                //here already the AlbumTable config

                // here begin the categoryTable factory
                'Album\Model\CategoryTable' =>  function($sm)
                {
                    //get the tableGateway just below in his own factory
                    $tableGateway = $sm->get('CategoryTableGateway');
                    //inject the tableGateway in the Table
                    $table = new CategoryTable($tableGateway);
                    return $table;
                },
                //here is the tableGateway Factory for the category
                'CategoryTableGateway' => function($sm)
                {
                    //get adapter to donnect dataBase
                    $dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
                    // create a resultSet
                    $resultSetPrototype = new ResultSet();
                    //define the prototype of the resultSet 
                    // => what object will be cloned to get the results
                    $resultSetPrototype->setArrayObjectPrototype(new Category());
                    //here you define your database table (category) 
                    //when you return the tableGateway to the CategoryTable factory
                    return new TableGateway('category', $dbAdapter, null, $resultSetPrototype);
                },
            ),
        ),
    }
}

在module / Album / src / Album / Model:

中创建Category.php文件
namespace Album\Model;

class Category
{
    public $id;
    public $name;

    public function exchangeArray(){
        $this->id     = (isset($data['id'])) ? $data['id'] : null;
        $this->name = (isset($data['name'])) ? $data['name'] : null;
    }

}

在同一文件夹中创建您的CategoryTable.php文件(Select输入只需要fetchAll()方法,您只需要所有类别的列表)

namespace Album\Model;

use Zend\Db\TableGateway\TableGateway;

use Album\Model\Category;

class CategoryTable
{
    protected $tableGateway;

    public function __construct(TableGateway $tableGateway)
     {
         $this->tableGateway = $tableGateway;
     }

     public function fetchAll()
     {
         $resultSet = $this->tableGateway->select();
         return $resultSet;
     }


     public function getCategory($id){
        // ...
     }

    public function saveCategory(Category $category)
    {
       // ...
    }

     public function deleteCategory($id)
     {       
        // ...
     }
}

不要忘记在AlbumTable :: saveAlbum()方法中添加新的cat_id字段;)

在相册/表单文件夹

中创建表单及其过滤器
namespace Album\Form;

class AlbumForm{
    public function __construct($cat_options){

        $this->add(array(
            'name' => 'id',
            'required' => false,
            'type' => 'hidden',
        ));

        $this->add(array(
            'name' => 'cat_id',
            'required' => true,
            'type' => 'Select',
            'options' => array(
                'value_options' => $cat_options,
                'label' => 'Category',
            )
            'attributes' => array(
                'value' => 3, // to select a default value
            )
        ));
        //and the rest of the form
         $this->add(array(
            'name' => 'submit',
            'type' => 'Submit',
            'attributes' => array(
                'id' => 'submitbutton',
                'value' => 'Go',
            ),
        ));
    }
}

请注意,我将过滤器放在特定类中,位于Form所在的同一名称空间中。 =>当模块中有很多表单和模型时,更容易找到... =>我更喜欢它,所以我推荐它:D =>您可以为同一个模型提供多个表单,例如registration,login和resetPassword表单,例如,所有表单都用于同一个User类

namespace Album\Form;

use Zend\InputFilter\InputFilter;
use Zend\InputFilter\InputFilterAwareInterface;

class AlbumFilter implements InputFilterAwareInterface
{
    protected $inputFilter;

    public function setInputFilter(InputFilterInterface $inputFilter)
    {
        throw new \Exception("Not used");
    }

    public function getInputFilter()
    {
        if(!$this->inputFilter)
        {
            $inputFilter = new InputFilter();

            $inputFilter->add(array(
                'name'     => 'id',
                'required' => false,
                'filters'  => array(
                    array('name' => 'Int'),
                ),
            ));
            $inputFilter->add(array(
                'name'     => 'cat_id',
                'required' => true,
                'filters'  => array(
                    array('name' => 'Int'),
                ),
            ));

            $inputFilter->add(array(
                'name'     => 'artist',
                'required' => true,
                'filters'  => array(
                    array('name' => 'StripTags'),
                    array('name' => 'StringTrim'),
                ),
                'validators' => array(
                    array(
                        'name'    => 'StringLength',
                        'options' => array(
                            'encoding' => 'UTF-8',
                            'min'      => 1,
                            'max'      => 45,
                        ),
                    ),
                ),
            ));

            $inputFilter->add(array(
                'name'     => 'title',
                'required' => true,
                'filters'  => array(
                    array('name' => 'StripTags'),
                    array('name' => 'StringTrim'),
                ),
                'validators' => array(
                    array(
                        'name'    => 'StringLength',
                        'options' => array(
                            'encoding' => 'UTF-8',
                            'min'      => 1,
                            'max'      => 45,
                        ),
                    ),
                ),
            ));
            $this->inputFilter = $inputFilter;
        }
        return $this->inputFilter;
    }

}

现在所有内容都配置好了,让控制器:)

namespace Album\Controller;

use Zend\Mvc\Controller\AbstractActionController;
use Album\Model\Album;
use Album\Form\AlbumForm;

class MyControler extends AbstractActionController
{
    private $CategoryTable;

    public function getAlbumsTable(){
        if(!$this->Album){
            // get AlbumTable from the ServiceLocator factory (defined in Module.php)
            $this->Album = $this->getServiceLocator()
                ->get('Album\Model\AlbumTable'); 
        }
    }

    public function getCategoryTable(){
        if(!$this->CategoryTable){
            $this->CategoryTable = $this->getServiceLocator()
                ->get('Album\Model\CategoryTable');
        }
    }

    public function addAction(){
        //get the categories from the database
        $categories = $this->getCategoryTable()->fetchall();

        //make an array from the resultSet
            // you can do it as well in your controller
            //or in your form class like I did in my yersterday's answer
        $cat_options = array();
            foreach ($categories as $category) {
                $cat_options[$category->id]=$category->name;
            }

        //create your form with category list as parameter
        $form = new AlbumForm($cat_options);
        //here I recomend to create a specific class for you filters
        // and not put it in your Album class as describe in the zf tutorial

        // => so you can have several forms using the same Model
        // and it is more easy to find on the form folder ;)
        $filter = new AlbumFilter();
        //inject InputFilter in your form
        $form->setInputFilter($filter->getInputFilter());
        //inject data in form
        $form->setData($request->getPost());
        //check the form validity (data vs filters)
        if($form->isValid()){
            //create a new album
            $album = new Album();  
            //hydrate your Album
            $album->exchangeArray($form->getData());
            //ask the albumsTable to save album in the database
            $this->albumsTable->saveAlbum($album);

            //here you can redirect to the Album list
            $this->redirect()->toRoute('Album');
        }
        //call the viewModel if first time you see the page
        // or if validation errors of the form.
        return array('form' =>$form);
    }
}

然后你只需要发表你的看法......我不会在这里犯下这个代码;)

如果您仍然需要在应用程序中创建多个模块,可以使用工厂调用控制器中的任何objectTable和getobjectTable()方法:正如Carlos所说,getServiceConfig()数组都合并为一个,所以您可以从应用程序的任何位置获取任何表:)