nil的未定义方法'*'：Nilclass

Question

I am working on an application that is like a forum. It displays all data in a table. So what I am trying to do is sort the dates in the table in ascending order.

Here's what I am trying to do:

def pullTenRecords

if session[:page] == 0

     tenRecords = Consciousmess.limit(10).offset(0)
     orderedTenRecords = tenRecords.order(created_at: :asc)


   else 
      tenRecord = Consciousmess.limit(10).offset(session[:page] * 10)

      orderTenRecords = tenRecord.order(created_at: :asc)
        end
    end

My problem is it says undefined undefined method '*' for Nil:NilClass. I do realize there are some posts about this on StackOverflow but none of the posts have really helped in terms of solving my issue. Thanks.

Answer 1

Your session[:page] is nil . Just set default value if it nil :

def pullTenRecords
   session[:page] ||= 0
   ...