# 9.2: Retrieve Followees in API

Next, we'll add functionality to retrieve a list of `User`s another `User` has followed. We'll do this with query parameters, although you could do it using a separate endpoint.

## Update UserParams

In the `UserParams.cs` file, add two properties: one for `Followers` and one for `Followees`. Both will have a default value of 'false'.

```csharp
public bool Followees { get; set; } = false;
public bool Followers { get; set; } = false;
```

## Update UserService

In `UserService.cs` - first we'll add a private method to retrieve either the followers or followees of a user.

```csharp
private async Task<IEnumerable<Follow>> GetUserFollows(int id, bool followers)
{
    var user = await _context.Users
                .Include(x => x.Followee)
                .Include(x => x.Follower)
                .FirstOrDefaultAsync(u => u.Id == id);

    if (followers)
    {
        return user.Followee.Where(u => u.FolloweeId == id);
    }
    else
    {
        return user.Follower.Where(u => u.FollowerId == id);
    }
}
```

If there is a parameter for 'followers', we'll return all of the users that are being followed by the user with the passed in id.

If not, we'll return the users that are following the user.

Next, in the `GetUsers()` method we have already written - we'll add checks for query parameters for followers or followees being passed in:

```csharp
if (userParams.Followers)
{
    var userFollowers = await GetUserFollows(userParams.UserId, userParams.Followers);
    users = users.Where(u => userFollowers.Any(follower => follower.FollowerId == u.Id));
}

if (userParams.Followees)
{
    var userFollowees = await GetUserFollows(userParams.UserId, userParams.Followers);
    users = users.Where(u => userFollowees.Any(followee => followee.FolloweeId == u.Id));
}
```

## Testing in Postman

Now, if we send a `GET` request to `/api/users?followees=true` we should get back the user we previously followed while testing:

![GetFolloweesPostmanTest](https://122480229-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LAU8YfVcpLNVPaSQtyc%2F-LAU8fPjgm_DRb3Jf3Aw%2F-LAU8tkBtonjPOGeCGIB%2Fgetfolloweespostmantest.png?generation=1524162339946213\&alt=media)