过滤收藏品Laravel

Question

Is there a way to filter a collection returned by database query on Laravel?

Returned collection is this

 1 => Person {#310 ▼
      #table: "person"
      #attributes: array:15 [▼
        "name" => "Jon Doe"
        "timeavailable" => "1,2,3,4,5,6,7,8"
 2 => Person {#310 ▼
      #table: "person"
      #attributes: array:15 [▼
        "name" => "Jon Moe"
        "timeavailable" => "1,2,5,7,8"

Here, I want to filter the timeavailable attribute. I only want to show results for 1,2,3 . Is there a way to filter this collection so that I only get something like this

1 => Person {#310 ▼
      #table: "person"
      #attributes: array:15 [▼
        "name" => "Jon Doe"
        "timeavailable" => "1,2,3"
 2 => Person {#310 ▼
      #table: "person"
      #attributes: array:15 [▼
        "name" => "Jon Moe"
        "timeavailable" => "1,2"

So, the filtered collection will have only 1,2,3 inclusions.

Answer 1

I think this is not the best solution, but it can be a way to solve for this problem. Check if this helps...

Try to use the map of Collection. In the inner function, you can explode, intersect and explode timeavailable.

$limiter = [1,2,3];
$filtered = $array->map(function($person, $k) use ($limiter) {
    $ex = explode(',', $person->timeavailable);
    $intersect = array_intersect($limiter, $ex);
    $person->timeavailable = implode(",",$intersect);
    return $person;
});

This will work fine for small results, but if you are planning to run this with lots of results, it will be slow.