[Validator] Use PHP attributes when creating custom validation constraints #14865
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validation/custom_constraint.rst Outdated
| use Symfony\Component\Validator\Constraint; | ||
| #[\Attribute()] |
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@derrabus do we recommend a leading slash and the brackets?
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@OskarStark
I got rid of the brackets like it is in the php annotations snippets.
Though the leading slash looks required to me as it doesn't work without.
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@OskarStark Symfony's CS policy is that we don't import classes from the global namespace, so the leading backslash is correct.
carsonbot added Status: Needs Work Status: Needs Review and removed Status: Needs Review Status: Needs Work labels 
| The PR should target 5.2 and we should add a note that attribute constraints have been added with Symfony 5.2. |
yoannrenard force-pushed the using_php_attributes_when_creating_custom_validation_constraint branch from b05f043 to 7212a90 Compare 
| I've added a small note inspired by the one made for creating routes as attributes as you requested @derrabus and changed the PR target to 5.2 |
| @derrabus You mean something explaining how to use both (Doctrine annotations + PHP attributes) at the same time? Like using a constraint that supports attributes and one which doesn't? |
| You can build classes that are a valid Doctrine annotation as well as a valid PHP attribute. Almost all of Symfony's built-in constraints work that way. The examples you provided only work with one of the annotation implementations. But that's probably knowledge most developers won't need. I think, we're good here. |
OskarStark force-pushed the using_php_attributes_when_creating_custom_validation_constraint branch from 4c1c1f5 to 55c5676 Compare 
| Thank you Yoann. |
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Describe how to use PHP attributes when creating custom validation constraints