app/views/sequences/_form.html.erb
<%= form_for(@sequence) do |f| %>
<%= render 'shared/errors', object: @sequence %>
<div class="required">
<div class="field">
<%= f.label :sequence %>
<br>
<%= f.text_area :sequence, cols: 60, rows: 5 %>
</div>
<div class="field">
<%= f.radio_button(:sequence_type, "aa") %>
<%= f.label(:sequence_type, "AA") %><br>
<%= f.radio_button(:sequence_type, "dna") %>
<%= f.label(:sequence_type, "DNA") %><br>
<%= f.radio_button(:sequence_type, "dna") %>
<%= f.label(:sequence_type, "RNA") %>
</div>
</div>
<div class="optional">
<div class="field">
<%= f.label :name %>
<br>
<%= f.text_field :name %>
</div>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>