module ActiveRecord
class Base
def self.find_by_sql_with_limit(sql, offset, limit)
sql = sanitize_sql(sql)
add_limit!(sql, {:limit => limit, :offset => offset})
find_by_sql(sql)
end
def self.count_by_sql_wrapping_select_query(sql)
sql = sanitize_sql(sql)
count_by_sql("select count(*) from (#{sql}) as my_table")
end
end
end
class ApplicationController < ActionController::Base
session :session_key => '_imagehost_session_id'
def paginate_by_sql(model, sql, per_page, options={})
if options[:count]
if options[:count].is_a? Integer
total = options[:count]
else
total = model.count_by_sql(options[:count])
end
else
total = model.count_by_sql_wrapping_select_query(sql)
end
object_pages = Paginator.new self, total, per_page,
@params['page']
objects = model.find_by_sql_with_limit(sql,
object_pages.current.to_sql[1], per_page)
return [object_pages, objects]
end
end