Code snippets

You will find here 10 code snippets I find useful so I don't have to Google ™ or Stackoverflow ™ them when I need. There are also code snippets I always forget! 😁 Sometimes, related links to the code will be available. The main difference with other random snippets you will find on the web is that in most cases (for the Symfony related ones) you will be able to run them directly from this website to check the output so you can verify it works as expected ™.

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Unit testing of a Symfony custom constraint with the ConstraintValidatorTestCase

This snippet shows how to unit test a Symfony custom constraint with the ConstraintValidatorTestCase. In the previous snippet, we ...

Symfony

Published on 2022-11-06 • Modified on 2022-11-06

Symfony Validation constraint tests unit-tests mock phpunit

Unit testing of a Symfony custom constraint

This snippet shows how to unit test a custom Symfony validation constraint. One learns every day; I made this snippet inspired by ...

Symfony

Published on 2022-11-05 • Modified on 2022-11-05

Symfony Validation constraint tests unit-tests mock phpunit

Selecting invalid choice values of a select form field in a Symfony functional test

This snippet shows how to select an invalid choice value of a select form field in a Symfony functional test. Indeed, if you try t...

Symfony

Published on 2022-08-19 • Modified on 2022-08-19

Symfony Form select field Validation html test functional

Validating array keys type and presence with Symfony

In this snippet, we see how to validate array keys type and presence with the Symfony validator component. This is straightforward...

Symfony

Published on 2021-08-07 • Modified on 2021-08-07

Symfony Validation array

Validating a French SIRET number with the Luhn algorithm

In this snippet, we will see how to check if a French SIRET number is valid with the Luhn algorithm. Check out the Wikipedia page ...

algorithm

Published on 2020-09-24 • Modified on 2020-09-24

algorithm PHP data luhn Validation

Marking Symfony forms required fields with an asterisk

In this snippet, we will see how to mark with an asterisk all the required fields of a Symfony form. We will do it with CSS. Inspe...

Symfony

Published on 2020-08-25 • Modified on 2020-08-25

Symfony Form Validation css

Test the validity of a Symfony form inside a Twig template

Sometimes it's useful to know if a form is valid inside a Twig template. Indeed, when using the form_ helpers like form_error all ...

Symfony

Published on 2019-07-23 • Modified on 2019-11-08

Symfony Twig Form Validation

[Symfony] On using the UniqueEntity validator without annotation

When having form for entities, it is common to have unique constraints, for example on the username or the email of a user. I am n...

Symfony

Published on 2019-07-04 • Modified on 2019-07-04

Symfony Form Validation

Add a custom conditional validation on a Symfony form

Sometimes validating each field of a form is not enough. In some cases you need a conditional validation. That means that the vali...

Symfony

Published on 2019-03-26 • Modified on 2019-03-28

Symfony Form Validation

Using the Symfony validation outside of the form context

It is sometimes useful to be able to use the Symfony validation services outside of the form context. In a controller for example ...

Symfony

Published on 2019-01-30 • Modified on 2019-01-30

Symfony Validation