Rails fields_for ordering -

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i have form has nested fields - ie. user accepts_nested_attributes_for class.

class has end_date datetime field.

i'd order classes end_date in editing form. form has this:

<%= f.fields_for :classes |builder| %>   <%= render "class_fields", {:f => builder} %> <% end %>

obviously, come out in order of created_at field.

how can modify order them arbitrary field?

if want classes sorted way, can add :order option association. if not, fields_for takes second argument that's record(s) display, can pass in list in whatever order want.


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