iao_team/app/Http/Livewire/Reminder.php

<?php

namespace App\Http\Livewire;
use Livewire\Component;

class Reminder extends Component
{
    public $records, $dataId;

    public $selectedFilter = 0;

    public function mount()
    {
    }

    public function render()
    {

        $member_cards = \App\Models\MemberCard::with('member')->where('expire_date', '>', date("y-m-d"))->orderBy('expire_date')->get();
        foreach($member_cards as $member_card)
        {
            $this->records[] = array('type' => 'Tessera', 'name' => $member_card->member->first_name . " " . $member_card->member->last_name, 'date' => $member_card->expire_date);
        }

        $member_certificates = \App\Models\MemberCertificate::with('member')->where('expire_date', '>', date("y-m-d"))->orderBy('expire_date')->get();
        foreach($member_certificates as $member_certificate)
        {
            $this->records[] = array('type' => 'Certificato', 'name' => $member_certificate->member->first_name . " " . $member_certificate->member->last_name, 'date' => $member_certificate->expire_date);
        }

        $key_values = array_column($this->records, 'date');
        array_multisort($key_values, SORT_ASC, $this->records);

        return view('livewire.reminders');
    }

}