3. Defining Entities

This tutorial uses the more verbose xml format of defining entities, but any metadata driver will work fine. The AdminBundle simply interacts with the entities as provided by Doctrine.

3.1. Model definition

No we need to create the entities that will be used in the blog:

3.1.1. Post

<?php
// src/Tutorial/BlogBundle/Entity/Post.php
namespace Tutorial\BlogBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 */
class Post
{


    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;


    /**
     * @ORM\Column(type="string", length="255")
     * @validation:Validation({
     *      @validation:MinLength(limit=10),
     *      @validation:NotBlank(),
     *      @validation:MaxLength(limit=255)
     * })
     */
    protected $title;

    /**
     * @ORM\Column(type="text")
     */
    protected $abstract;


    /**
     * @ORM\Column(type="text")
     * @validation:Validation({
     *      @validation:NotBlank()
     * })
     */
    protected $content;

    /**
     * @ORM\Column(type="boolean")
     */
    protected $enabled;


    /**
     * @ORM\Column(type="datetime")
     */
    protected $created_at;

    /**
     * @ORM\OneToMany(targetEntity="Comment", mappedBy="post")
     */
    protected $comments;

    /**
     * @ORM\ManyToMany(targetEntity="Tag")
     */
    protected $tags;

    public function __toString()
    {
      return $this->getTitle();
    }

    public function __construct()
    {
        $this->tags     = new \Doctrine\Common\Collections\ArrayCollection;
        $this->comments = new \Doctrine\Common\Collections\ArrayCollection;
        $this->created_at = new \DateTime("now");;
    }

3.1.2. Tag

<?php
// src/Tutorial/BlogBundle/Entity/Tag.php
namespace Tutorial\BlogBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 */
class Tag
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\Column(type="string")
     * @validation:Validation({
     *      @validation:NotBlank()
     * })
     */
    protected $name;

    /**
     * @ORM\Column(type="boolean")
     */
    protected $enabled;

    /**
     * @ORM\ManyToMany(targetEntity="Post")
     */
    protected $posts;

    public function __toString()
    {
      return $this->getName();
    }

    public function __construct()
    {
        $this->posts = new \Doctrine\Common\Collections\ArrayCollection();
    }

3.1.3. Comment

<?php
// src/Tutorial/BlogBundle/Entity/Comment.php
namespace Tutorial\BlogBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 */
class Comment
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\Column(type="string")
     * @validation:Validation({
     *      @validation:NotBlank()
     * })
     */
    protected $name;


    /**
     * @ORM\Column(type="string")
     * @validation:Validation({
     *      @validation:NotBlank()
     * })
     */
    protected $email;


    /**
     * @ORM\Column(type="string")
     */
    protected $url;


    /**
     * @ORM\Column(type="text")
     * @validation:Validation({
     *      @validation:NotBlank()
     * })
     */
    protected $message;

    /**
     * @ORM\ManyToOne(targetEntity="Post")
     */
    protected $post;


    public function __toString()
    {
      return $this->getName();
    }

3.2. Generate getter and setter

Fill the entities with getters and setters running the command:

php app/console doctrine:generate:entities Tutorial

3.3. Creating Database

Create the database related to the entities and the mapping running:

php app/console doctrine:schema:update –force