As the tittle said, Here is my Controller 

```
$book = Data::where('userId','1')->paginate(3);

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

```

And get the json data like this:

```
data:[{id: 1, userId: 1, vendorId: 1, name: "Alfreda Berge PhD", phone: "1-850-813-5950 x96169",…},…]
from:1
last_page:2
next_page_url: "http:/localhost/XX/public/user/book/list/1?page=2"
perpage:4
prev_page_url:null
to:4
total:5
// if I want to add a new column and value here ,what should I do? 

```

I tried to do this :

```
$book = Data::where('userId','1')->paginate(3);
$book->printWord = 'Hellow!';
return response()->json($book);

```

But, It seem will remove the column `printWord`.
Any idea?