John Davidson

Message:

I just started learning Laravel.

I get an error message of "Error: Call to undefined function addPost()". What seems to be the problem in my code?

$command == "addPost";

use Illuminate\Routing\Controller;

use Illuminate\Support\Facades\DB;

use Illuminate\Http\Request;



class PostsController extends Controller

{

    function checkPostsCommand(Request $request) {

        $command = $request->btn;



        $data = $this->$command($request->all());



        return response()->json($data);

    }

    private function addPost() {

        return 'wew';

    }

}

---

My Answer:
The issue in your code is that you are trying to call a method dynamically using a variable, but you are not using the correct syntax. Instead of using `$this->$command()`, you should use `$this->{$command}()`.

Here is the corrected code:

php
$command = "addPost";
use Illuminate\Routing\Controller;
use Illuminate\Support\Facades\DB;
use Illuminate\Http\Request;

class PostsController extends Controller
{
function checkPostsCommand(Request $request) {
$command = $request->btn;

$data = $this->{$command}($request->all());

return response()->json($data);
}
private function addPost() {
return 'wew';
}
}


By using curly braces around the variable name in `$this->{$command}()`, you are able to call the method dynamically based on the value of the `$command` variable.