fix: attach when using *_fields API (#2459)

app/views/avo/associations/new.html.erb

@@ -2,6 +2,7 @@
   <%
     url = Avo::Services::URIService.parse(avo.root_url.to_s)
       .append_paths('resources', params[:resource_name], params[:id], params[:related_name])
+      .append_query({view: @resource&.view&.to_s})
       .to_s
   %>
   <%= form_with scope: 'fields',

spec/features/avo/fields_methods_for_views_spec.rb

@@ -2,6 +2,7 @@
 
 RSpec.feature "Fields methods for each view", type: :feature do
   let!(:links) { create_list :course_link, 3 }
+  let!(:attach_link) { create :course_link }
   let!(:course) { create :course, links: links }
 
   context "with `fields` declaration" do
@@ -168,5 +169,22 @@ def form_fields
         find("tr[data-resource-id='#{course.links.first.to_param}'] [data-control='detach']").click
       }.to change(course.links, :count).by(-1)
     end
+
+    it "attach works using show and index fields api" do
+      visit "#{Avo::Engine.routes.url_helpers.resources_course_path(course)}/links?turbo_frame=has_many_field_links&view=show"
+
+      click_on "Attach link"
+
+      expect(page).to have_text "Choose course link"
+
+      select attach_link.link, from: "fields_related_id"
+
+      expect {
+        within '[aria-modal="true"]' do
+          click_on "Attach"
+        end
+        wait_for_loaded
+      }.to change(course.links, :count).by 1
+    end
   end
 end