app/views/events/form_partials/_repeat_form.html.erb
<div class="row">
<div class="col-lg-6">
<div class="form-group">
<label for="description">wiederkehrende Veranstaltung?</label>
<%= form.check_box :repeat, { class: "form-control" }, true, false %>
</div>
</div>
<%= form.fields_for :repeat_duration, event.repeat_duration do |fr| %>
<div class="col-lg-6">
<div class="form-group">
<label for="description">jährliche Wiederholung?</label>
<%= fr.check_box :every_year, { class: "form-control" }, true, false %>
</div>
</div>
<% end %>
</div>
<%= form.fields_for :repeat_duration, event.repeat_duration do |fr| %>
<div class="row">
<div class="col-lg-6">
<div class="form-group">
<label for="description">Start Datum</label>
<%= fr.text_field :start_date, class: "form-control" %>
</div>
</div>
<div class="col-lg-6">
<div class="form-group">
<label for="description">End Datum</label>
<%= fr.text_field :end_date, class: "form-control" %>
</div>
</div>
</div>
<% end %>