huge Laravel 10 upgrade

app/Http/Livewire/Meetup/Form/MeetupForm.php

@@ -0,0 +1,79 @@
+<?php
+
+namespace App\Http\Livewire\Meetup\Form;
+
+use App\Models\Meetup;
+use Illuminate\Validation\Rule;
+use Livewire\Component;
+use Livewire\WithFileUploads;
+use WireUi\Traits\Actions;
+
+class MeetupForm extends Component
+{
+    use WithFileUploads;
+    use Actions;
+
+    public string $country;
+
+    public ?Meetup $meetup = null;
+
+    public ?string $fromUrl = '';
+
+    public $image;
+
+    protected $queryString = [
+        'fromUrl' => [
+            'except' => null,
+        ],
+    ];
+
+    public function rules()
+    {
+        return [
+            'image' => [Rule::requiredIf(! $this->meetup->id), 'nullable', 'mimes:jpeg,png,jpg,gif', 'max:10240'],
+
+            'meetup.city_id'          => 'required',
+            'meetup.name'             => 'required',
+            'meetup.community'        => 'required',
+            'meetup.telegram_link'    => 'string|nullable|required_without_all:meetup.webpage,meetup.nostr,meetup.twitter_username,meetup.matrix_group',
+            'meetup.intro'            => 'string|nullable',
+            'meetup.webpage'          => 'string|url|nullable|required_without_all:meetup.telegram_link,meetup.nostr,meetup.twitter_username,meetup.matrix_group',
+            'meetup.nostr'            => 'string|nullable|required_without_all:meetup.webpage,meetup.telegram_link,meetup.twitter_username,meetup.matrix_group',
+            'meetup.twitter_username' => 'string|nullable|required_without_all:meetup.webpage,meetup.telegram_link,meetup.nostr,meetup.matrix_group',
+            'meetup.matrix_group'     => 'string|nullable|required_without_all:meetup.webpage,meetup.telegram_link,meetup.nostr,meetup.twitter_username'
+        ];
+    }
+
+    public function mount()
+    {
+        if (!$this->meetup) {
+            $this->meetup = new Meetup([
+                'community' => 'einundzwanzig',
+            ]);
+        } elseif (
+            !auth()
+                ->user()
+                ->can('update', $this->meetup)
+        ) {
+            abort(403);
+        }
+    }
+
+    public function submit()
+    {
+        $this->validate();
+        $this->meetup->save();
+
+        if ($this->image) {
+            $this->meetup->addMedia($this->image)
+                              ->toMediaCollection('logo');
+        }
+
+        return redirect($this->fromUrl);
+    }
+
+    public function render()
+    {
+        return view('livewire.meetup.form.meetup-form');
+    }
+}