column, comment belongs to post, i follow the instruction of
http://compositekeys.rubyforge.org/, and it seems successfully,
(But i still cant confirm to put require 'rubygems' and
require 'composite_primary_keys' on which file ).
I can do the CRUD operation for post,then i want to create comment form,
in the _form.html.erb, the code likes below:
<%= form_for([@post, @post.comments.build]) do |f| %>
then i got an error,"unknown attribute: comment_id",
i think the build method need the parameter id which is default, but i
dont have this column,and i cant change any thing in the database,how to
resolve this problem?Thanks .
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