[Rails] print id for object in controller

Ruby on Rails Wednesday, December 9, 2015

Hello everyone, I am new to ruby, i'm facing issues in it.
When i try to print id for object in loop, i get an error

Here is my code

def index

@lists = List.all

@lists.each do |list|

raise list.id

end

exit

end

I'm getting the error

exception class/object expected

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