Laravel Request: isJson()

Defination

This function returns true if request has a header CONTENT_TYPE and values contains /json or +json. isJson() determines if the current request is sending JSON.

Syntax

public function isJson():bool

Usecases

  • If you want to check if request has Accept header set to application/json
  • This is useful if you are building rest api app where you want to check if request is json type

Example-1: Use of isJson in Laravel Controller 

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class UserController extends Controller
{
    public function index(Request $request)
    {
        dd($request->isJson()); // output:- false
    }
}

Example-2: Use of isJson function using request()

Following example can be used anywhere in Laravel app: 

namespace App\Helpers;

use Illuminate\Http\Request;

class Test 
{
    public function __construct() 
    {
        dd(request()->isJson()); // output:- false
    }
}
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