Is Type validation useful with Doctrine (in Symfony)?

Question

Is it useful to validate type of data with the Type Constraint with Doctrine in Symfony?

Indeed, when you try to put data with wrong type in the database, Symfony throws an exception with the following message:

The type of the "name" attribute must be "string", "integer" given."

Thus, there is a priori no danger of SQL injection.

Moreover, in every tutorial I have seen, there was no Type checking.

What do you think about it?

Sql query takes time. So better to validate data before querying. This is where it is useful. — Artur Yukhatov

Vamsi Krishna B Vamsi Krishna B · Accepted Answer · 2017-08-14T08:06:47

it depends, in certain cases it makes absolute sense to use type validation constraints. but with PHP7 some of the Type validations are redundant, when you make use Scalar type declarations with strict mode on.

/**
 * @param string $email
 */
public function setEmail(string $email)
{
    $this->email = $email;
}

Is Type validation useful with Doctrine (in Symfony)?

2 Answers