How to get data in JSON from laravel web page?

I have done a web page using laravel. This web page is to store courses with sudents and some data. Now I`d like to get information as JSON but I don´t know how to do it.

Here´s my funtion show in my controller to show all the students stored in a course:

public function show(Course $course) { $students = $course->students()->get(); return view('Course.show',compact('students','course')); } The url that appears in my navigatio bar is: http://tfg.test/courses/25 because I´m doing it locally. Now, if I use Postman to make a get request to that url I receive the whole html page, but no JSON data. I don´t know how this is done.

I have tried doing this:

public function show(Course $course) {

    $students = $course->students()->get();
    
    return response()->json($students, 200);
    /* return view('Course.show',compact('students','course')); */
    
}

And I get the JSON but I don`t go to the view in the web page

This is my route in web.php: Route::resource('courses', CourseController::class);

A friend told me to do this: public function show(Request $request,Course $course) { $students = $course->students()->get(); if($request->ajax()){ return response()->json($students, 200); }else{ return view('Course.show',compact('students','course')); } }

to get the view when using the navigator and get the JSION in other case but it doesn`t work because when I navigate I get the view and if I make a get request to that url via postman I get the view too and not the json.

Thank you.