Ruby on Rails

I am going through the railstutorial.org book, so I am still a newbie
with ruby.

My goal is to create my own multi-site framework with admin pages
(including pages for administering uploaded files, users, and dynamical
pages). I have been experimenting with Refinery, but it may be too
difficult to modify for different purposes (not sure yet).

For now, based on the tutorial, I know how to use form_for to produce
forms. The fields are handled like this:

<%= f.label :name %>
<%= f.text_field :name, class: 'form-control' %>

What would be the neatest way to make this code more generic, so I don't
have to actually write the field names here and in several other places?

I need to iterate a field list either in db schema, or in a
manually-built array of fields.

- Jussi

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