Textarea将不会保存条目

Question

我在保存文本区域中的内容时遇到问题

<div class="col-lg-18 col-md-18 col-sm-18 col-xs-19"><textarea class="rounded-area form-control" rows="5" name="doc_notes" id="doc_notes" style="width:100%" placeholder=""></textarea></div>


public function updateDocNote($user_id) {
        $doc_notes = $this->request->input('doc_notes','');
        $user = User::whereId($user_id)->first();
        if(empty($user)) return response()->json(['error' => "User not found!"]);

        Trace::log('doc_update_note', $this->request->all(), $user_id);
    }