anchor.diff:        <%= item.fields_for :claim, @item.claim || Claim.new do |f_claim| %> 
           <div class="row">
             <div><%= f_claim.label :claim_type_id %></div>
  -          <div><%= f_claim.select2 :claim_type_id, @claim_types, @item.claim.try(:claim_type_id), :select_attribute => :id, :display_attribute => :display_name, :include_blank => true %></div>
  +          <div><%= f_claim.select2 :claim_type_id, @claim_types, @item.claim.try(:claim_type_id), :select_attribute => :id, :display_attribute => :display_name, :include_blank => true, :width => 250 %></div>
           </div>
           <div class="row">
             <div><%= f_claim.label :note %></div>
  
positive.code: 
      <div class="row">
        <div><%= item.label t('activerecord.models.checkout_type') -%></div>
        <div><%= item.select2 :checkout_type_id, @checkout_types, @item.checkout_type_id, :width => 200, :select_attribute => :id, :display_attribute => :display_name %></div>
      </div>
      <div class="row">
        <div><%= item.label t('activerecord.models.accept_type') -%></div>
        <div><%= item.select2 :accept_type_id, @accept_types, @item.accept_type_id, :width => 200, :select_attribute => :id, :display_attribute => :display_name %></div>
      </div>
      <div class="row">
        <div><%= item.label t('activerecord.models.circulation_status') -%></div>
        <div><%= item.select2 :circulation_status_id, @circulation_statuses, @item.circulation_status_id, :width => 500, :select_attribute => :id, :display_attribute => :display_name %></div>
      </div>
      <div class="row">
        <div><%= item.label t('activerecord.models.retention_period') -%></div>
        <div><%= item.select2 :retention_period_id, @retention_periods, @item.retention_period_id, :width => 200, :select_attribute => :id, :display_attribute => :display_name %></div>
      </div>
      <div class="row">
        <div><%= item.label :call_number -%></div>
        <div><%= item.text_field :call_number -%></div>
      </div>
      <div class="row">
        <div><%= item.label t('activerecord.models.bookstore') -%></div>
        <div><%= item.select2 :bookstore_id, @bookstores, @item.bookstore_id, :width => 150, :select_attribute => :id, :display_attribute => :name, :include_blank => true%></div>
      </div>
      <div class="row">
        <div><%=f.label :price -%></div>
        <div><%= item.text_field :price -%></div>
      </div>
      <div class="row">
        <div><strong><%= t('activerecord.attributes.item.url') %></strong></div>
  
negative.code:     </div>
      <div class="row">
        <div><%= item.label t('activerecord.models.use_restriction') -%></div>
        <div><%= item.select2(:use_restriction_id, @use_restrictions, @use_restriction_id, :width => 250, :select_attribute => :id, :display_attribute => :display_name) %></div>
      </div>
      <div class="row">
        <div><%= item.label t('role.required_role') -%></div>
        <div>
          <%= select2_tag 'item_required_role_id', 'manifestation[items_attributes][0][required_role_id]',
                          @roles, @item.required_role_id, :width => 250, :select_attribute => :id, :display_attribute => :display_name %>
        </div>
      </div>
      <div class="row">
  