iao_team/app/Http/Livewire/Category.php

<?php

namespace App\Http\Livewire;

use Livewire\Component;

class Category extends Component
{
    public $categories, $parentId, $name, $enabled, $categoryId, $updateCategory = false, $addCategory = false;

    protected $listeners = [
        'deleteCategoryListner'=>'deleteCategory'
    ];

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

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

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

    public function addCategory()
    {
        $this->resetFields();
        $this->addCategory = true;
        $this->updateCategory = false;
    }

    public function storeCategory()
    {
        $this->validate();
        try {
            Category::create([
                'name' => $this->name,
                'parent' => $this->$parentId,
                'enabled' => $this->enabled
            ]);
            session()->flash('success','Categoria creata');
            $this->resetFields();
            $this->addCategory = false;
        } catch (\Exception $ex) {
            session()->flash('error','Errore in fase di salvataggio');
        }
    }

    public function editCategory($id){
        try {
            $category = Category::findOrFail($id);
            if( !$category) {
                session()->flash('error','Categoria non trovata');
            } else {
                $this->name = $category->name;
                $this->enabled = $category->enabled;
                $this->parentId = $category->parent_id;
                $this->categoryId = $category->id;
                $this->updateCategory = true;
                $this->addCategory = false;
            }
        } catch (\Exception $ex) {
            session()->flash('error','Errore');
        }
    }

    public function updateCategory()
    {
        $this->validate();
        try {
            Category::whereId($this->categoryId)->update([
                'name' => $this->name,
                'parent' => $this->$parentId,
                'enabled' => $this->enabled
            ]);
            session()->flash('success','Categoria aggiornata');
            $this->resetFields();
            $this->updateCategory = false;
        } catch (\Exception $ex) {
            session()->flash('success','Errore');
        }
    }

    public function cancelCategory()
    {
        $this->addCategory = false;
        $this->updateCategory = false;
        $this->resetFields();
    }

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