From: "Alexander.Senko (Alexander Senko) via ruby-core" <ruby-core@...>
Date: 2025-06-10T14:39:42+00:00
Subject: [ruby-core:122509] [Ruby Feature#21435] Kernel#optional as a conditional #then

Issue #21435 has been updated by Alexander.Senko (Alexander Senko).


nobu (Nobuyoshi Nakada) wrote in #note-1:
> Regarding `respond_to?`, IIRC, isn't ActiveSupport's `try` based on it?

Yes, it would be even simpler with Rails:
```ruby
@record = Record.find(record_id)
  .optional { it.try :decorate }
```

I just decided not to post Rails-specific code here.

----------------------------------------
Feature #21435: Kernel#optional as a conditional #then
https://bugs.ruby-lang.org/issues/21435#change-113732

* Author: Alexander.Senko (Alexander Senko)
* Status: Open
----------------------------------------
When chaining, I need sometimes to apply some changes conditionally, like this:
```ruby
@record = Record.find(record_id)
  .then { it.respond_to?(:decorate) ? it.decorate : it }
```

It would be great to DRY it a bit:
```ruby
@record = Record.find(record_id)
  .optional { it.decorate if it.respond_to? :decorate }
```

Reference implementation:
```ruby
# Yields self to the block and returns the result of the block if it���s
# truthy, and self otherwise.
def optional
  tap do
    result = yield(self) or next

    break result
  end
end
```

The name is discussible.



-- 
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