app/views/shared/partials/_accessibility_information_form.html.erb
<%= form.fields_for :accessibility_information, record.accessibility_information do |fai| %>
<div class="row">
<div class="col-lg-6">
<div class="form-group">
<label for="description">Beschreibung</label>
<%= fai.text_field :description, class: "form-control" %>
</div>
</div>
<div class="col-lg-6">
<div class="form-group">
<label for="description">Art</label>
<%= fai.text_field :types, class: "form-control" %>
</div>
</div>
</div>
<% record.urls.each do |url| %>
<%= fields_for :urls, url do |furl| %>
<div class="row">
<div class="col-lg-6">
<div class="form-group">
<label for="description">Url</label>
<%= furl.text_field :url, class: "form-control" %>
</div>
</div>
<div class="col-lg-6">
<div class="form-group">
<label for="description">Beschreibung</label>
<%= furl.text_field :description, class: "form-control" %>
</div>
</div>
</div>
<hr />
<% end %>
<% end %>
<% end %>