How to connect the combo box with database fields using ruby on rails 3.0

I am having problem on how to connect the combo box with the fields on the database.. I google it but it seems that luck is not on my side.. I try several code, and I'm trying to think what is the problem wit开发者_运维知识库h my code in _form.html.erb, here it is:

<%= f.select :classification_code, @tests.collect( {|p| [ p.description, p.classification_code ] }, {:include_blank =>'None'}) %>

and I'm having syntax error... how can I do it properly?

thank you.

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Try this:

<%= f.select :classification_code, @tests.collect{|p| [ p.description, p.classification_code ] }, {:include_blank =>'None'} %>