search for: price_s

I have a dataframe say: date price_g price_s 0.34 0.56 0.36 0.76 . . . . . . and so on. say, 1000 rows. Is it possible to add two columns to this dataframe, by computing say diff(log(price_g) and diff(log(price_s)) ? The elements in the...

I want to do in-place edits on a list of data, but I''m having trouble getting the ID passed through to the controller. I use this in my view to create the field: <% for frame in @frames %> ... <%= in_place_editor_field :frame, :price %> <% end %> and this produces the following in my output: <span class="in_place_editor_field"

Ill keep it brief. Dragging an item is working but dropping and updating the list gives me this error - NoMethodError in AdminController#sort You have a nil object when you didn''t expect it! You might have expected an instance of Array. The error occured while evaluating nil.each #{RAILS_ROOT}/app/controllers/admin_controller.rb:171:in `sort'' # My view - <ul