Is it possible to combine will_paginate with find_by_sql?

Use paginate_by_sql, i.e.

sql = " SELECT * 
        FROM   users
        WHERE  created_at >= ?
        ORDER  BY created_at DESC "

@users = User.paginate_by_sql(
  [sql, 2.weeks.ago],
  page: @page,
  per_page: @per_page
)

As a general rule any finder can be paginated by replacing the find* with paginate*.