Api platform, prevent POST method when some datas are the same

Question

I'm using symfony with API PLATFORM to create a contacts share system :

One User can share one or many contacts to one or many other users.

I created ContactShare entity :

/**
 * @ApiResource()
 * @ORM\Entity(repositoryClass=ContactShareRepository::class)
 */
class ContactShare
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue()
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\OneToMany(targetEntity=Contact::class, mappedBy="contactsToShare")
     */
    private $contacts;

    /**
     * @ORM\ManyToOne(targetEntity=AppUser::class, inversedBy="shareContactsOwner")
     */
    private $sender;

    /**
     * @ORM\OneToMany(targetEntity=AppUser::class, mappedBy="shareContactsReceivers")
     */
    private $receivers;
    
    ...
    ...

}

When i tested with postman i can post a new share :

My question is :

How to add constraints or validators to prevent the POST method of contact share if we

share the same contacts to the same user, and Prevent POST method if we send the same

contact to a duplicated user ?

DonCallisto · Accepted Answer · 2020-09-21 07:25:51Z

1

You can create a custom validator and call valid as shown here.

If validation returns one (or more) error, you should return some kind of response with proper HTTP status code (4xx?).

Moreover, if this validation should be performed only for this API call (I think this is a domain requirement, so it should be always applyed, but it's only a guess of mine) you can take advantage of validation groups.

UPDATE: API Platform seems to take care of this on your behalf, so you don't need to call explicitly valid

answered Sep 21, 2020 at 7:25

DonCallisto

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