I developed a few simple apps using Ruby On Rails (no database) for researchers, we
got a new server (Mac Pro) and I try to develop in rails 4.0.4, I have this piece of
code in index.rhtml, but not anymore if I copy it to index.html.erb, I don’t get
any error, but text_field_tag and submit_tag are not displaying, I read manuals
about form_tag, text_field_tag and submit_tag, they don’t seem to change
much, what I might be doing wrong? Thanks a lot for your advice.