CODEWITHSUNDEEP
laravel
DevonDahon
DevonDahon

Reputation: 8350

How to push duplicates into an array with Laravel pluck()?

In the example below, taken from Laravel documentation, if duplicate keys exist, the last matching element will be inserted into the plucked collection:

$collection = collect([
    ['brand' => 'Tesla',  'color' => 'red'],
    ['brand' => 'Pagani', 'color' => 'white'],
    ['brand' => 'Tesla',  'color' => 'black'],
    ['brand' => 'Pagani', 'color' => 'orange'],
    ['brand' => 'Renault', 'color' => null],
]);

$plucked = $collection->pluck('color', 'brand');

$plucked->all();

// ['Tesla' => 'black', 'Pagani' => 'orange', 'Renault' => null]

How can I get all duplicates into an array like below instead ?

[
  'Tesla' => ['red', 'black'],
  'Pagani' => ['white', 'orange'],
  'Renault' => null,
]

Upvotes: 1

Views: 713

Answers (2)

Tohid Dadashnezhad
Tohid Dadashnezhad

Reputation: 1938

I hope this will work as you want

$collection = collect([
  ['brand' => 'Tesla', 'color' => 'red'],
  ['brand' => 'Pagani', 'color' => 'white'],
  ['brand' => 'Tesla', 'color' => 'black'],
  ['brand' => 'Pagani', 'color' => 'orange'],
  ['brand' => 'Renault', 'color' => null],
]);
$plucked = $collection->groupBy('brand')->map(function ($brands) {
  $data = $brands->pluck('color');
  return $data[0] ? $data : null;
});

Upvotes: 4

OMR
OMR

Reputation: 12188

there is a method specialized for this case, it's mapToGroups:

The mapToGroups method groups the collection's items by the given closure. The closure should return an associative array containing a single key / value pair, thus forming a new collection of grouped values:

 $collection = collect([
            ['brand' => 'Tesla',  'color' => 'red'],
            ['brand' => 'Pagani', 'color' => 'white'],
            ['brand' => 'Tesla',  'color' => 'black'],
            ['brand' => 'Pagani', 'color' => 'orange'],
            ['brand' => 'Renault', 'color' => null],
        ]);
        $grouped = $collection->mapToGroups(function ($item, $key) {
            return [$item['brand'] => $item['color']];
        });

Upvotes: 4

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