Validation an integer input from a form

Question

I have an entity with several fields in it. One of them is being validated after form submission as follows:

/**
 * @var integer $anzahl
 *
 * @ORM\Column(name="anzahl", type="integer")
 * @Assert\NotBlank(message="Bitte geben Sie eine Kistenanzahl an.")
 * @Assert\Type(type="numeric", message="Die Kistenanzahl muss eine Zahl sein.")
 * @Assert\Min(limit="1", message="Sie müssen mindestens eine Kiste suchen oder anbieten.")
 */
private $anzahl;

I am having two problems with this solution:

Only integer values higher than zero should be accepted. However also floats/doubles are being accepted by this validation. However, if I change @Assert\Type(type="numeric") to @Assert\Type(type="integer") no input is validated as true. How can I validate my input to be an integer value?

The other problem is, after entering an obviously invalid value (like a string of letters) I receive not only my German error message for Type validation but also the English message 'This value should be a valid number'. Where does this message come from and how can I get rid of it?

English message 'This value should be a valid number' comes from IntegerType (and maybe other Types) and can be overriden with ['invalid_message' => 'String in German'] — Uros
– Uros, Commented Mar 24, 2022 at 12:03

Alain · Accepted Answer · 2017-06-21 06:04:59Z

28

You should use:

@Assert\Type(type="integer")

But be careful, you should use it with an IntegerType, not a NumberType or a TextType:

Symfony\Component\Form\Extension\Core\Type\IntegerType

IntegerType is identical to NumberType except that it integrates the proper data transformer.

edited Jun 21, 2017 at 6:04

Alain

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answered May 7, 2012 at 6:51

Paweł Jędrzejewski

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4 Comments

sprain Over a year ago

@Assert\Type(type="integer") is not working. That was the first thing I tried.

Paweł Jędrzejewski Over a year ago

Have you seen second part of answer? What form type are you using for this property?

Tony Knibb Over a year ago

Assert\Min() is deprecated symfony.com/doc/2.2/reference/constraints/Min.html

Paweł Jędrzejewski Over a year ago

This answer has been posted 2 years ago.

angelcool.net · Accepted Answer · 2016-03-31 22:49:33Z

18

This works for me:

 ->add('field_name', 'integer', array(
     'label' => 'Your label here', 
     'data' => 0, // default value
     'precision' => 0, // disallow floats
     'constraints' => array(
         new Assert\NotBlank(), 
         new Assert\Type('integer'), 
         new Assert\Regex(array(
             'pattern' => '/^[0-9]\d*$/',
             'message' => 'Please use only positive numbers.'
             )
         ),
         new Assert\Length(array('max' => 2))
     )
 ))

edited Mar 31, 2016 at 22:49

angelcool.net

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answered Aug 20, 2014 at 14:06

Tony Knibb

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1 Comment

Bhavin Thummar Over a year ago

Hello Tony In my case regex is working very well but Type function integer is not working. This is wondering for me because i have checked all the code i have already added use Type in my code.

user212218 · Accepted Answer · 2013-09-12 01:05:53Z

13

If the field type should be a string, you can use this instead:

/**
 * @Assert\Type(type="digit")
 */

Although it is not mentioned in the documentation, TypeValidator also utilizes ctype_* functions.

See \Symfony\Component\Validator\Constraints\TypeValidator:

public function validate($value, Constraint $constraint)
{
  ...

  $ctypeFunction = 'ctype_'.$type;

  ...

  } elseif (function_exists($ctypeFunction) && call_user_func($ctypeFunction, $value)) {

  ...
}

answered Sep 12, 2013 at 1:05

user212218

1 Comment

Slava Fomin II Over a year ago

Great, thank you! I've created a pull request to add this to the documentation.

Chinoisfurax · Accepted Answer · 2013-09-12 01:02:18Z

6

You can use

/**
 * @Assert\Regex(pattern="/\d+/")
 */

or create a validator with ctype_digit.

edited Sep 12, 2013 at 1:02

user212218

answered May 6, 2012 at 14:27

Chinoisfurax

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2 Comments

insertusernamehere Over a year ago

As this is a solution that accepts numbers even using text as the field type, it has the downside that it accepts values like "123ABC". Maybe this pattern would be more useful, as it also does not accept values starting with leading zeros: * @Assert\Regex(pattern="/^([1-9][0-9]*)$/")

Stphane Over a year ago

Shorter version does not start with 0, then only digits are accepted@Assert\Regex(pattern="/^(?!0)\d+$/")

Stan Fad · Accepted Answer · 2017-01-16 12:00:03Z

3

Starting from Symfony v2.3 version you should use:

/**
 * @Assert\Type(type="integer")
 * @Assert\GreaterThan(0)
 */

But keep in mind that forms field type should be integer (IntegerType::class), otherwise i'll get negative validation.

edited Jan 16, 2017 at 12:00

answered Jan 16, 2017 at 11:50

Stan Fad

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Comments

Sithu · Accepted Answer · 2015-06-19 05:31:10Z

0

I had to use number in form field type, but it showed an asterisk * next to the input label although it is not mandatory. So,I had to use 'required' => false as well. The form field type integer did not work. The underlying field data type is smallint.

->add('storey', 'number', array('required' => false))

The Regex constraint in YML is not working too while type is integer or nothing provided. I don't know why

storey:
    - Regex: '/^[0-9]+$/'

My Symfony version is 2.7.

answered Jun 19, 2015 at 5:31

Sithu

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1 Comment

Bhavin Thummar Over a year ago

In my case regex is working very well but Type function integer is not working. This is wondering for me because i have checked all the code i have already added use Type in my code.

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