CODEWITHSUNDEEP
formssymfonydoctrine-ormmany-to-many
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Reputation: 2810

Symfony2 form entity processing

I have a User entity that has an ArrayCollection of Subscriptions. I have these setters and getters.

public function addSubscription(\Doge\WowBundle\Entity\Subscription $subscription)
{
    $this->subscriptions[] = $subscription;
    return $this;
}

public function removeSubscription(\Doge\WowBundle\Entity\Subscription $subscription)
{
    $this->subscriptions->removeElement($subscription);
}

public function getSubscriptions()
{
    return $this->subscriptions;
}

There is another entity called Plan. A Subscription is basically the intermediate entity between User and Plan, except it holds an extra field so it is necessary to be a dedicated entity.

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

/**
 * @ORM\ManyToOne(targetEntity="User", inversedBy="subscriptions")
 * @ORM\JoinColumn(name="user_id", referencedColumnName="id", onDelete="CASCADE")
 */
protected $user;

/**
 * @ORM\ManyToOne(targetEntity="Plan", inversedBy="subscriptions")
 * @ORM\JoinColumn(name="plan_id", referencedColumnName="id", onDelete="CASCADE")
 */
protected $plan;

/**
 * @ORM\Column(type="date")
 */
protected $nextDue;

Otherwise, it would just be a many-to-many relationship with an automatic intermediate table generated.

Now in the User registration form, a user can choose between plans available in the Plans table with this code in the FormBuilder

$builder->add('subscriptions', 'entity', array('class' => 'DogeWowBundle:Plan'))

How can I create a new Subscription object given the Plan object? Would I do so in the controller? Use a datatransformer? What is the best practice for this?

Upvotes: 2

Views: 88

Answers (1)

Derick F
Derick F

Reputation: 2769

you have 2 options, the first is that you have a form that contains a form. One form is mapped to your user and the second is mapped to your subscription. So basically in your user form you would have 

$builder->add('subscriptions', new SubscriptionsType())

and within that SubscriptionsType you would have your entity for plans like:

$builder->add('plan', 'entity', array(
    'class' => 'DogeWowBundle:Plan',
    'property' => 'plan_name',
));

this way your subscriptions will be auto generated and updated as necessary.

You could also use a data transformer, but i personally like using forms within forms.

Upvotes: 1

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