Ideas/app/Http/Controllers/IdeaController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Idea;
class IdeaController extends Controller
{
    public function store()
    {
        request()->validate(
            [
                'idea' => 'required|min:5|max:240'
            ]
        );

        $idea = Idea::create(
            ['content' => request()->get('idea', null)]
        );

        return redirect(route('dashboard'))->with("success", "Your Idea was created successfully");


    }
}