How can I compare an entry?
@edit = Data.find(4)
After this, user update some data en press submit.
How can compare, is there any changes in new @edit and what is in database? Have user chnged any data or pressed just submit without changes?
Try this in the #update action. It's untested:
@edited_data = Data.new(params[:data]) @original_data = Data.find(params[:id]) if @edited_data == @original_data # The data is NOT changed... else # The data IS changed... end
I don't know if the == operator works in this case, but try it out and
come back if you get problems. 