the Store Function in PostController doesn't save content

[mehdiyaq]

migration:
Schema::create('posts', function (Blueprint $table) {
$table->id();
$table->timestamps();
});

    model:
        use HasTrixRichText;

protected $guarded = ['id'];

View:
        <form action="{{ route('trix.store') }}" method="post">
        @csrf
        <div class="my-5" >
            @trix(\App\Post::class, 'content')
            <button type="submit">submit</button>
        </div>
    </form>
    
    store funnction:
        public function store()
{
    Post::create([
        'post-trixFields' => request('post-trixFields'),
        'attachment-post-trixFields' => request('attachment-post-trixFields')
    ]);
}

by:
dd(\request()->all());

I get:
array:3 [▼
"_token" => "Ylm6lC0HBCdmRvvb9P2sCZ5uPoaZl16k7vMmg5qc"
"post-trixFields" => array:1 [▼
"content" => "

test

"
]
"attachment-post-trixFields" => array:1 [▼
"content" => "[]"
]
]

the attachment will save but nothing save in trix_rich_texts