ruby function containing array.each{} block

gistfile1.txt

def self.setHomeSpaces()
        puts 'homeLayout'
        # The name and desired number of spaces on the samsung and laptop display
        smsng_spaces = 6
        laptop_spaces = 4
        smsng_name="S27D590"
        laptop_name="Color LCD"
        
        smsng_id = ""
        laptop_id = ""
        # Get the IDs for each display
        TotalSpaces2.display_list().each { |display|
            if display.has_value?(smsng_name) 
                smsng_id = display[:display_id]
            elsif display.has_value?(laptop_name)
                laptop_id = display[:display_id]
            else
                puts "Missing displays"
            end      
        }
        
        # Get the current number of spaces on each display
        num_smsng_spaces = TotalSpaces2.number_of_spaces_on_display(smsng_id)
        num_laptop_spaces =  TotalSpaces2.number_of_spaces_on_display(laptop_id)
        
        # Set number of spaces
        if num_smsng_spaces < smsng_spaces
            TotalSpaces2.add_desktops_on_display(smsng_spaces - num_smsng_spaces,smsng_id)
        else
             TotalSpaces2.remove_desktops_on_display(num_smsng_spaces - smsng_spaces,smsng_id)
        end
        
        if num_laptop_spaces < laptop_spaces
            TotalSpaces2.add_desktops_on_display(laptop_spaces - num_laptop_spaces,laptop_id)
        else
             TotalSpaces2.remove_desktops_on_display(num_laptop_spaces - laptop_spaces,laptop_id)
        end
        
        # Set the grid layout
        TotalSpaces2.set_grid_columns_on_display(3,smsng_id)
        TotalSpaces2.set_grid_columns_on_display(2,laptop_id)


    end