Error Message: “The GET method is not supported for this route. Supported methods: POST”

when i access to endpoint this http://localhost/newsapp_api/public/api/register,this message is showed “The GET method is not supported for this route. Supported methods: POST”. look to the link below

but when i tried register new user and entered data(name,email,password) for user by postman program this message is showed “message”: “Undefined property: IlluminateDatabaseQueryBuilder::$map”. and it doesn’t give json data. look to the link below

api.php

Route::POST('register', 'AppHttpControllersApiUserController@store');

UserController.php

public function store(Request $request)
    {
        $request->validate([
            'name'  => 'required',
            'email' => 'required',
            'password'  => 'required'
        ]);
        $user = new User();
        // $user->name = $request->get( 'name' );
        // $user->email = $request->get( 'email' );
        // $user->password = Hash::make( $request->get( 'password' ) );
        $user->name = $request->name;
        $user->email = $request->email;
        $user->password = Hash::make( $request->password );
        $user->save();
        return new UserResource( $user );
    }

UserResource.php

<?php

namespace AppHttpResources;

use IlluminateHttpResourcesJsonResourceCollection;
use IlluminateHttpResourcesJsonResource;

class UserResource extends ResourceCollection
{
    /**
     * Transform the resource collection into an array.
     *
     * @param  IlluminateHttpRequest  $request
     * @return array
     */
    public function toArray($request)
    {
        return parent::toArray($request);
    }
}

Answer

Your first problem when you enter your endpoint in the browser, the browser will send GET method to your endpoint. Since your endpoint only accepts POST method, it throws an error.

The second problem is you extends UserResource with ResourceCollection so UserResource expects a collection. However you pass a User object which is not a collection to UserResource.

I think you meant to create a UserResource as just a resource which extends JsonResource

https://laravel.com/docs/8.x/eloquent-resources#introduction

use IlluminateHttpResourcesJsonJsonResource;

class UserResource extends JsonResource