CODEWITHSUNDEEP
phplaravel
test
test

Reputation: 18200

Laravel - Carry array through map

Let's say I have a model collection that I'm mapping through like this:

$alreadyImported = [];

$players = Players::whereNotIn('id', $alreadyImported)
                    ->get()
                    ->random(25)
                    ->pluck('id');

$groups = $players->map(function ($item, $key) use ($alreadyImported) {

    array_merge($alreadyImported, $item->id);

    $group = [
        'username' => $item['username'],
    ];

    return $group;
});

// $groups is a pivot table with group and players

Why does my $globalList always start at []? How can I carry the already-merged $globalList to the next map iteration?

The player IDs does not matter. It's for show. I am looking to pass the array through the map iterations.

Upvotes: 0

Views: 204

Answers (1)

Alexey Mezenin
Alexey Mezenin

Reputation: 163748

Just use pluck() to get IDs from the collection:

$ids = $players->pluck('id');

Or, if you just need IDs:

$ids = Players::where('banned', false)->pluck('id');

If you're going to add any other data, you don't need to merge it to some array or a collection because map() will create a new collection.

Finally, you don't need to use collect() because get() will return collection.

Upvotes: 2

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