如何保护删除以前的class元素值

Question

I have controller class in laravel in which i have a function create() and a variable attachment i am calling function by ajax my class code is.

class AttachmentController extends Controller
{
    public  $_attachments;

    public function create()
    {

            $this->_attachments[]=  'test';

            var_dump($this->_attachments);



    }

problem is every time when i call it by ajax it return me "test" at 0 index of attachment array . but i want if i call create function 1st time it give me test on 0 index but when next time when i call it . it give me "test" on both 0 and 1 index and so on .. how it is possible please help me

Answer 1

To preserve the values between requests you need to store them somewhere, an alternative is to use sessions, as the example below, for more information see https://laravel.com/docs/session

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use App\Http\Requests;
use App\Http\Controllers\Controller;

class AttachmentController extends Controller
{
    public function create(Request $request)
    {   
        $request->session()->push('attachments', 'test');
        var_dump($request->session()->get('attachments'));
    }   
}