8000 [12.x] Add support for callback evaluation in containsOneItem method by fernandokbs · Pull Request #55622 · laravel/framework · GitHub
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[12.x] Add support for callback evaluation in containsOneItem method #55622

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Merged
merged 2 commits into from
May 2, 2025
Merged

[12.x] Add support for callback evaluation in containsOneItem method #55622

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516e7b0
[12.x] Add support for callback evaluation in containsOneItem method
fernandokbs May 1, 2025
9822044
Update Collection.php
taylorotwell May 2, 2025
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9 changes: 7 additions & 2 deletions src/Illuminate/Collections/Collection.php
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Original file line number Diff line number Diff line change
Expand Up @@ -712,12 +712,17 @@ public function isEmpty()
}

/**
* Determine if the collection contains a single item.
* Determine if the collection contains exactly one item. If a callback is provided, determine if exactly one item matches the condition.
*
* @param (callable(TValue, TKey): bool)|null $callback
* @return bool
*/
public function containsOneItem()
public function containsOneItem(?callable $callback = null): bool
{
if ($callback) {
return $this->filter($callback)->count() === 1;
}

return $this->count() === 1;
}

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4 changes: 4 additions & 0 deletions tests/Support/SupportCollectionTest.php
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Expand Up @@ -838,6 +838,10 @@ public function testContainsOneItem($collection)
$this->assertFalse((new $collection([]))->containsOneItem());
$this->assertTrue((new $collection([1]))->containsOneItem());
$this->assertFalse((new $collection([1, 2]))->containsOneItem());

$this->assertFalse(collect([1, 2, 2])->containsOneItem(fn ($number) => $number === 2));
$this->assertTrue(collect(['ant', 'bear', 'cat'])->containsOneItem(fn ($word) => strlen($word) === 4));
$this->assertFalse(collect(['ant', 'bear', 'cat'])->containsOneItem(fn ($word) => strlen($word) > 4));
}

public function testIterable()
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0