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PODoctrine2 Association for ManyToMany Bidirectional and Insert operation for Unique OneToMany Relationships
 

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    <p>I am using <code>Symfony2</code> with <code>Doctrine 2</code>. I have 5 entities in my application.</p> <ol> <li>Book</li> <li>Keyword (Bidirectional, should fetch all books having particular keyword)</li> <li>Author (Bidirectional, should fetch all books having particular author(s))</li> <li>Category (Bidirectional, should fetch all books falling into particular category)</li> <li><p>BookExtra (Unidirectional, In Book Entity, should fetch BookExtra data)</p> <ul> <li>Each book can have many keywords </li> <li>Each book can have many authors</li> <li>Each book can fall into a single category</li> <li>Each book have exactly one BookExtra record.</li> <li>The keyword and author tables should contain unique values</li> </ul></li> </ol> <p>When a new <code>Book</code> is added, if the <code>Author(s)</code> and <code>Keyword(s)</code> exists, the respected <code>Author ID</code> and <code>Keyword ID</code> should be assigned to the <code>Book</code>, and if it doesn't exist, the new <code>records</code> will be created and the respected <code>ID</code> should be assigned to the <code>Book</code>.</p> <p>I have the following <code>Entity Classes</code>:</p> <pre><code>Book.php namespace Acme\StoreBundle\Entity; use Doctrine\ORM\Mapping as ORM; /** * Book * * @ORM\Table(name="book") * @ORM\Entity */ class Book { /** * @var integer * * @ORM\Column(name="id", type="integer") * @ORM\Id * @ORM\GeneratedValue(strategy="AUTO") */ protected $id; /** * @var string * * @ORM\Column(name="isbn", type="string", length=16) */ protected $isbn; /** * @var string * * @ORM\Column(name="title", type="string", length=255) */ protected $title; /* * @ORM\OneToOne(targetEntity="BookExtra") * @ORM\JoinColumn(name="extra_id", referencedColumnName="id") * * ********* OR ********* * *********What should go HERE********* * */ protected $bookextra; /* * @ORM\ManyToMany(targetEntity="Author", inversedBy="books") * @ORM\JoinTable(name="authors_books") */ protected $author; /* * @ORM\OneToOne(targetEntity="Category") * @ORM\JoinColumn(name="category_id", referencedColumnName="id") */ protected $category; } </code></pre> <hr> <pre><code>BookExtra.php namespace Acme\StoreBundle\Entity; use Doctrine\ORM\Mapping as ORM; /** * BookExtra * * @ORM\Table(name="book_extra") * @ORM\Entity */ class Detail { /** * @var integer * * @ORM\Column(name="id", type="integer") * @ORM\Id * @ORM\GeneratedValue(strategy="AUTO") */ protected $id; /** * @var string * * @ORM\Column(name="data", type="string", length=255) */ protected $data; } </code></pre> <hr> <pre><code>Author.php namespace Bookhut\BookBundle\Entity; use Doctrine\ORM\Mapping as ORM; /** * Author * * @ORM\Table(name="author") * @ORM\Entity */ class Author { /** * @var integer * * @ORM\Column(name="id", type="integer") * @ORM\Id * @ORM\GeneratedValue(strategy="AUTO") */ protected $id; /** * @var string * * @ORM\Column(name="name", type="string", length=100) */ protected $name; // **********What should go HERE********* protected $books; } </code></pre> <p><code>Keyword</code> &amp; <code>Category</code> Entities are similar to Author Entity</p> <p>The Problem is that, when i generate <code>schema</code> with <code>cli</code>, it never generates <code>Relationships/Associations</code>.</p> <p>And what should be the proper <code>Relationships/Associations</code> for <code>Book &amp; Author</code> Entity</p> <p>I searched for this problem and proper <code>Relationships/Associations</code></p> <p>I found this:</p> <p><a href="https://stackoverflow.com/questions/14091153/symfony2-app-console-not-generating-properties-or-schema-updates-for-entity-rela">Symfony2 app/console not generating properties or schema updates for Entity Relationships/Associations</a></p> <p><a href="https://stackoverflow.com/questions/10931191/saving-onetoone-relation-entities">Saving onetoone relation entities</a></p> <p><a href="https://stackoverflow.com/questions/10618514/doctrine2-in-a-one-to-many-bidirectional-relationship-how-to-save-from-the-inv">doctrine2: in a one-to-many bidirectional relationship, how to save from the inverse side?</a></p> <p>But it didn't help me.</p> <p>Can somebody give an example of this type of <code>Relationships/Associations</code> and <code>insert</code> operations?</p>
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