iao_team/app/Http/Livewire/City.php

<?php

namespace App\Http\Livewire;

use Livewire\Component;

class City extends Component
{
    public $cities, $name, $enabled, $cityId, $provinceId, $updateCity = false, $addCity = false;

    protected $listeners = [
        'deleteCityListner'=>'deleteCity'
    ];

    protected $rules = [
        'name' => 'required'
    ];

    public function resetFields(){
        $this->name = '';
        $this->enabled = true;
    }

    public function render()
    {
        $this->cities = City::select('id', 'name', 'enabled')->get();
        return view('livewire.city');
    }

    public function addCity()
    {
        $this->resetFields();
        $this->addCity = true;
        $this->updateCity = false;
    }

    public function storeCity()
    {
        $this->validate();
        try {
            City::create([
                'name' => $this->name,
                'province_id' => $this->provinceId,
                'enabled' => $this->enabled
            ]);
            session()->flash('success','Città creata');
            $this->resetFields();
            $this->addCity = false;
        } catch (\Exception $ex) {
            session()->flash('error','Errore in fase di salvataggio');
        }
    }

    public function editCity($id){
        try {
            $city = City::findOrFail($id);
            if( !$city) {
                session()->flash('error','Città non trovata');
            } else {
                $this->name = $city->name;
                $this->enabled = $city->enabled;
                $this->provinceId = $city->provinceId;
                $this->cityId = $city->id;
                $this->updateCity = true;
                $this->addCity = false;
            }
        } catch (\Exception $ex) {
            session()->flash('error','Errore');
        }
    }

    public function updateCity()
    {
        $this->validate();
        try {
            City::whereId($this->cityId)->update([
                'name' => $this->name,
                'province_id' => $this->provinceId,
                'enabled' => $this->enabled
            ]);
            session()->flash('success','Città aggiornata');
            $this->resetFields();
            $this->updateCity = false;
        } catch (\Exception $ex) {
            session()->flash('success','Errore');
        }
    }

    public function cancelCity()
    {
        $this->addCity = false;
        $this->updateCity = false;
        $this->resetFields();
    }

    public function deleteCity($id)
    {
        try{
            City::find($id)->delete();
            session()->flash('success',"Città eliminata");
        }catch(\Exception $e){
            session()->flash('error',"Errore");
        }
    }
}