Modify pagination values in Laravel model method by intercepting requests

Question

In my Laravel application, I have an API entry point where I collect initial data for my application, for example I get paginated results for posts, tags, users...

I'm using paginate:15 for all records, but for users I want to use paginate:30 because in my request parameters I have something like this:

page=1&paginate=15

Is there a way to change it to 30 inside my controller method

Initial Controller

$users = $this->userService->getUsersPaginated($request);
$users = $this->vuePaginate($users);

In my User model:

public function getUsersPaginated($request)
    {
        
        $users = User::
        paginate($request['paginate']);
        


        return $users;
    }

P粉127901279 · Answer

Based on user type, evaluate whether the paging size can be handled on the front end.

Anyway, if you want to handle it on the backend, you can find a condition to set the paging size.
For example:

if ($currentUser->role == 'final-user')  // 或类似的条件
   $perPage = max (30, $request['paginate']);
else
   $perPage = $request['paginate'];

$users = User::paginate($perPage);

I also recommend that you set a minimum and maximum value for pagination to avoid problems with wrong values from the frontend (imagine if you got a value like 1,000,000 or -1)

const DEFAULT_RESULTS_PER_PAGE = 15;
const FINAL_USER_RESULTS_PER_PAGE = 30;
const MAX_RESULTS_PER_PAGE = 100;

/* ... */

public function getUsersPaginated($request)
{
    $perPage = min (max ($request['paginate'] ?: self::DEFAULT_RESULTS_PER_PAGE, 1), self::MAX_RESULTS_PER_PAGE);

    if (/* condition */)
        $perPage = max (self::FINAL_USER_RESULTS_PER_PAGE, $perPage);

    $users = User::paginate($perPage);

    /* ... */

Also note that the default pager request variable is per_page