<%= form_for Synapse.new, url: synapses_url, remote: true do |form| %> <%= form.text_field :desc, :placeholder => "describe the connection..." %> <%= form.hidden_field :topic1id, :value => 0 %> <%= form.hidden_field :topic2id, :value => 0 %> <%= form.hidden_field :grabSynapse, :value => "null" %> <% end %>