Zend3 模型子类型

Question

学习Zend3框架。在我必须创建模型子类型的示例 Zend3 项目上工作。

我有以下 Book.php 型号：

<?php

namespace Products\Model;

class Book
{
    public $id;
    public $author;
    public $title;
    public $isbn;



    public function exchangeArray(array $data)
    {
        $this->id     = !empty($data['id']) ? $data['id'] : null;
        $this->author = !empty($data['author']) ? $data['author'] : null;
        $this->title  = !empty($data['title']) ? $data['title'] : null;
        $this->isbn  = !empty($data['isbn']) ? $data['isbn'] : null;
    }

    public function getArrayCopy()
    {
        return [
            'id'     => $this->id,
            'author' => $this->author,
            'title'  => $this->title,
            'isbn'  => $this->isbn,

        ];
    } 

}

现在我必须创建：

"Book" 的一个子类型，称为 "Thriller"，继承自 "Book"，并有一个额外的属性，称为 "excitement_factor"

同时：

它在数据库和您的模型中正确反映了这种关系，我应该：

还要确保数据库的完整性，最后：

实施足够的 table 模型函数来检索、保存和删除 "thriller"s，对所有查询使用 ORM 样式

我该怎么做？

Thriller 应该用新领域扩展 Book class 吗？我如何在 Zend3 中执行此操作？底层的 table 呢？ Zend 会为 Thriller 创建新的 table 吗？我必须调整哪些文件？

对于 ORM 样式方法，它意味着 fetchAll()、fetchOneBy() 等？

谢谢，

更新 1：

我的书table如下：

CREATE TABLE book (id INT AUTO_INCREMENT NOT NULL, author varchar(100) NOT NULL, title varchar(100) NOT NULL, isbn varchar(100) NOT NULL, type ENUM("Thriller") NOT NULL, PRIMARY KEY(id))

创作第二部table惊悚片：

CREATE TABLE thriller
(
    id INT NOT NULL,
    book INT NOT NULL,
    excitement_factor VARCHAR(100) NOT NULL,
    PRIMARY KEY(id),
    FOREIGN KEY(book) REFERENCES book(id)
)

两者都有 TableGateways。

型号如下：

cat Book.php 
<?php

namespace Products\Model;

class Book
{
    public $id;
    public $author;
    public $title;
    public $isbn;

    private $inputFilter;

    public function exchangeArray(array $data)
    {
        $this->id     = !empty($data['id']) ? $data['id'] : null;
        $this->author = !empty($data['author']) ? $data['author'] : null;
        $this->title  = !empty($data['title']) ? $data['title'] : null;
        $this->isbn  = !empty($data['isbn']) ? $data['isbn'] : null;
    }

    public function getArrayCopy()
    {
        return [
            'id'     => $this->id,
            'author' => $this->author,
            'title'  => $this->title,
            'isbn'  => $this->isbn,

        ];
    } 

}
cat BookTable.php 
<?php

namespace Products\Model;

use RuntimeException;
use Zend\Db\TableGateway\TableGatewayInterface;

class BookTable
{
    private $tableGateway;

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

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

    public function getBook($id)
    {
        $id = (int) $id;
        $rowset = $this->tableGateway->select(['id' => $id]);
        $row = $rowset->current();
        if (! $row) {
            throw new RuntimeException(sprintf(
                'Could not find row with identifier %d',
                $id
            ));
        }

        return $row;
    }

    public function saveBook(Book $book)
    {
        $data = [
            'author' => $book->author,
            'title'  => $book->title,
            'isbn'  => $book->isbn,

        ];

        $id = (int) $book->id;

        if ($id === 0) {
            $this->tableGateway->insert($data);
            return;
        }

        if (! $this->getBook($id)) {
            throw new RuntimeException(sprintf(
                'Cannot update book with identifier %d; does not exist',
                $id
            ));
        }

        $this->tableGateway->update($data, ['id' => $id]);
    }

    public function deleteBook($id)
    {
        $this->tableGateway->delete(['id' => (int) $id]);
    }
}

cat Thriller.php 
<?php

namespace Products\Model;

class Thriller
{
    public $id;
    public $book;
    public $excitement_factor;

    private $inputFilter;

    public function exchangeArray(array $data)
    {
        $this->tid     = !empty($data['id']) ? $data['id'] : null;
        $this->book = !empty($data['book']) ? $data['book'] : null;
        $this->excitement_factor = !empty($data['excitement_factor']) ? $data['excitement_factor'] : null;
    }

    public function getArrayCopy()
    {
        return [
            'id'     => $this->id,
            'book' => $this->book,
            'excitement_factor' => $this->excitement_factor,

        ];
    } 

}

cat ThrillerTable.php 
<?php

namespace Products\Model;

use RuntimeException;
use Zend\Db\TableGateway\TableGatewayInterface;

class ThrillerTable
{
    private $tableGateway;

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

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

    public function getThriller($id)
    {
        $id = (int) $id;
        $rowset = $this->tableGateway->select(['id' => $id]);
        $row = $rowset->current();
        if (! $row) {
            throw new RuntimeException(sprintf(
                'Could not find row with identifier %d',
                $id
            ));
        }

        return $row;
    }

    public function saveThriller(Thriller $thriller)
    {
        $data = [
            'book' => $thriller->book,
            'excitement_factor'  => $thriller->excitement_factor,


        ];

        $id = (int) $thriller->id;

        if ($id === 0) {
            $this->tableGateway->insert($data);
            return;
        }

        if (! $this->getThriller($id)) {
            throw new RuntimeException(sprintf(
                'Cannot update thriller with identifier %d; does not exist',
                $id
            ));
        }

        $this->tableGateway->update($data, ['id' => $id]);
    }

    public function deleteThriller($id)
    {
        $this->tableGateway->delete(['id' => (int) $id]);
    }
}

在我的控制器中添加 Book，我只是这样做：

public function addBookAction()
    {
        $form = new BookForm();
        $form->get('submit')->setValue('Add');

        $request = $this->getRequest();

        if (! $request->isPost()) {
            return ['form' => $form];
        }

        $bookForm = new BookForm();
        $form->setInputFilter($bookForm->getInputFilter());
        $form->setData($request->getPost());

        if (! $form->isValid()) {
            return ['form' => $form];
        }

        $bookModel = new Book();

        $bookModel->exchangeArray($form->getData());


        $this->book->saveBook($bookModel);
        return $this->redirect()->toRoute('product');
    }

现在如何添加Thriller？

public function addThrillerAction()
{
    // ???
}

Answer 1

"Thriller" 必须是书籍对象吗？也许它可以是 "genre" 的书籍对象。在这种方法中，书籍对象有一个属性作为 "genres"，当然还有 "addGenre/removeGenre/hasGenre/getGenres" 方法。我的意思是每本书可以有不止一种类型。您还可以将所有流派保存在 table 中，获取它们并填充表格。顺便说一下，您可以运行查询它们。一个支点 table 足以保持书籍和流派的关系。

Zend3 模型子类型

Zend3 Model subtype

php

zend-framework3