How to set additive parameter to laravel collection map method - php

Question

In my laravel 5.7 I try to remake a small piece of application using collection
$selectedSubscriptions = [1,2,3];
$siteSubscriptionsList = [];
$siteSubscriptions = SiteSubscription
::getByActive(true)
->orderBy('id', 'asc')
->get();
foreach ($siteSubscriptions as $next_key => $nextSiteSubscription) {
$is_found = false;
foreach ($selectedSubscriptions as $next_value) {
if ($nextSiteSubscription->id == (int)$next_value) {
$is_found = true;
break;
}
}
$siteSubscriptionsList[] = (object)['name' => $nextSiteSubscription->name, 'id' => $nextSiteSubscription->id, 'checked' => $is_found];
}
like :
$selectedSubscriptions = [1,2,3];
$siteSubscriptionsList = SiteSubscription
::getByActive(true)
->orderBy('id', 'asc')
->get()
->map(function ( $item, $selectedSubscriptions ) {
$is_found = false;
foreach ($selectedSubscriptions as $next_value) {
if ($item->id == (int)$next_value) {
$is_found = true;
break;
}
}
return (object)['name' => $item->name, 'id' => $item->id, 'checked' => $is_found];
})
->all();
But I need to set additive parameter $selectedSubscriptions into map function, as it does not work, as I see that inside os a map
function has “0” value.
How correctly?

Answer 1

When passing data through to the ->map() closure, you use the use statement (which follows the function() call):
$selectedSubscriptions = [1,2,3];
$siteSubscriptionsList = SiteSubscription
::getByActive(true)
->orderBy('id', 'asc')
->get()
->map(function ($item, $key) use ($selectedSubscriptions) {
$is_found = false;
foreach ($selectedSubscriptions as $next_value) {
if ($item->id == (int)$next_value) {
$is_found = true;
break;
}
}
return (object)['name' => $item->name, 'id' => $item->id, 'checked' => $is_found];
})
->all();
The second parameter of ->map() will always be the variable of the $key.
Sidenote: You can reduce your foreach check for the id with the following:
$is_found = collect($selectedSubscriptions)->contains($item->id);