[Serializer] BC break on isers following #54148

[ninsuo]

Symfony version(s) affected

6.4.6

Description

The following PR fixes a bug, but changes how isers are serialized: https://github.com/symfony/symfony/pull/54148/files

• In 6.4.4, a property named $isSomething is serialized something

• In 6.4.6, that property is now serialized: isSomething

Even though previous behaviour was a bug, it is there since years and needs the right migration on our codebase. I'd advise that such a backward compatibility break could be updated on the next major upgrade.

How to reproduce

    private bool $isAdmin = false;

    public function isAdmin(): bool
    {
        return $this->isAdmin;
    }

    public function setIsAdmin(bool $isAdmin): self
    {
        $this->isAdmin = $isAdmin;

        return $this;
    }

Possible Solution

No response

Additional Context

No response

[mtarld]

Indeed, I think that #54148 should be reverted and merged in 7.2 instead.

[henrythethird]

The 5.4.38 Version is affected as well. 5.4.36 was not yet affected (we rolled back to that one)

This introduces a backward compatibility issue. Wouldn't this be a breaking change to the serializer component?

Our current workaround (maybe useful for someone):

    "extra": {
        "symfony": {
            "require": "5.4.*,!=5.4.38"
        }
    }