[Rails] new action doesn't render from other model's index page

[fugee ohu]

When I click submit nothing happens The console only shows the request

items/index.html.erb:

<%= form_with model: Item, url: new_item_path(@item), method: "get" do |f| 
%>

     <div class="field">
         <%= f.select :item_type_id, nested_set_options(ItemType.all, 
@item_type) {|i| "#{'-' * i.level} #{i.name}" }, {:include_blank => 
"Select"}%>
     </div>

    <div class="actions">
        <%= f.submit "New item" %>
    </div>

<% end %>

new.html.erb:

<%= render form %>

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