我使用Prawn插件创建了我们的Rails应用程序的PDF版本，涉及到Kase模型的页面 - Kase的链接为/kases/1，PDF版本的链接为/kases/1.pdf。
我该如何在show.html.erb中添加一个链接到PDF文件，使得无论查看哪个页面，它都会更新URL以显示正确的案例ID？
<% content_for :header do -%>
<%=h @kase.jobno %> | <%=h @kase.casesubject %>
<% end -%>
<!-- #START SIDEBAR -->
<% content_for :sidebar do -%>
<% if @kase.avatar.exists? then %>
<%= image_tag @kase.avatar.url %>
<% else %>
<p style="font-size:smaller"> You can upload an icon for this case that will display here. Usually this would be for the year number icon for easy recognition.</p>
<% end %>
<% end %>
<!-- #END SIDEBAR -->
<ul id="kases_showlist">
<li>Date Instructed: <span><%=h @kase.dateinstructed %></span></li>
<li>Client Company: <span><%=h @kase.clientcompanyname %></span></li>
<li>Client Reference: <span><%=h @kase.clientref %></span></li>
<li>Case Subject: <span><%=h @kase.casesubject %></span></li>
<li>Transport<span><%=h @kase.transport %></span></li>
<li>Goods<span><%=h @kase.goods %></span></li>
<li>Case Status: <span><%=h @kase.kase_status %></span></li>
<li>Client Company Address: <span class="address"><%=h @kase.clientcompanyaddress %></span></li>
<li>Client Company Fax: <span><%=h @kase.clientcompanyfax %></span></li>
<li>Case Handler: <span><%=h @kase.casehandlername %></span></li>
<li>Case Handler Tel: <span><%=h @kase.casehandlertel %></span></li>
<li>Case Handler Email: <span><%=h @kase.casehandleremail %></span></li>
<li>Claimant Name: <span><%=h @kase.claimantname %></span></li>
<li>Claimant Address: <span class="address"><%=h @kase.claimantaddress %></span></li>
<li>Claimant Contact: <span><%=h @kase.claimantcontact %></span></li>
<li>Claimant Tel: <span><%=h @kase.claimanttel %></span></li>
<li>Claiment Mob: <span><%=h @kase.claimantmob %></span></li>
<li>Claiment Email: <span><%=h @kase.claimantemail %></span></li>
<li>Claimant URL: <span><%=h @kase.claimanturl %></span></li>
<li>Comments: <span><%=h @kase.comments %></span></li>
</ul>
<!--- START FINANCE INFORMATION -->
<div id="kase_finances">
<div class="js_option">
<h2>Financial Options</h2><p class="finance_showhide"><%= link_to_function "Show","Element.show('finance_showhide');" %> / <%= link_to_function "Hide","Element.hide('finance_showhide');" %></p>
</div>
<div id="finance_showhide" style="display:none">
<ul id="kases_new_finance">
<li>Invoice Number<span><%=h @kase.invoicenumber %></span></li>
<li>Net Amount<span><%=h @kase.netamount %></span></li>
<li>VAT<span><%=h @kase.vat %></span></li>
<li>Gross Amount<span><%=h @kase.grossamount %></span></li>
<li>Date Closed<span><%=h @kase.dateclosed %></span></li>
<li>Date Paid<span><%=h @kase.datepaid %></span></li>
</ul></div>
</div>
<!--- END FINANCE INFORMATION -->
<%= link_to 'Edit Case', edit_kase_path(@kase) %> |
<%= link_to 'Back', kases_path %> |
<a href="#">Top</a>
<div style="width:120%; height: 50px; background-color: black; margin: 10px 0 0 -19px; padding: 0; background-color: #d4d4d4;"> </div>
<div class="js_option_kaseemails">
<%= link_to_function "Show",
"Element.show('newinstructionemail1');"
%> /
<%= link_to_function "Hide",
"Element.hide('newinstructionemail1');"
%>
</div>
<h3>New Instruction Email</h3>
<div id="newinstructionemail1" style="display:none">
<p class="kase_email_output">
Hi,<br />
<br />
Many thanks for your instructions in the subject matter.<br />
<br />
We have allocated reference number <%=h @kase.jobno %> to the above claim.<br />
<br />
We have started our inquiries and will be in touch.<br />
<br />
Best Regards,<br />
<br />
<strong><%=h current_user.name %></strong>
<br />
McClelland & Co<br />
PO Box 149<br />
Southport<br />
PR8 4GZ<br />
<br />
Tel: +(0) 1704 569871<br />
Fax: +(0) 1704 562234<br />
Mob: <%=h current_user.mobile %><br />
E-mail: <%= current_user.email %><br />
<br />
This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you receive this e-mail in error please notify the originator of the message.
<br /><br />
McClelland & Co has taken every reasonable precaution to ensure that any attachment to this e-mail has been checked for viruses but it is strongly recommended that you carry out your own virus check before opening any attachment. McClelland & Co cannot accept liability for any damage sustained as a result of software virus infection.
</p>
<%= link_to 'Edit Case', edit_kase_path(@kase) %> |
<%= link_to 'Back', kases_path %> |
<a href="#">Top</a>
</div>
<div style="width:120%; height: 20px; background-color: black; margin: 10px 0 0 -19px; padding: 0; background-color: #d4d4d4;"> </div>
<div class="js_option_kaseemails">
<%= link_to_function "Show",
"Element.show('newinstructionemail');"
%> /
<%= link_to_function "Hide",
"Element.hide('newinstructionemail');"
%>
</div>
<h3>New Instruction Email</h3>
<div id="newinstructionemail" style="display:none">
<p class="kase_email_output">
Hi,<br />
<br />
Many thanks for your instructions in the subject matter.<br />
<br />
We have allocated reference number <%=h @kase.jobno %> to the above claim.<br />
<br />
We have started our inquiries and will be in touch.<br />
<br />
Best Regards,<br />
<br />
<strong><%=h current_user.name %></strong>
<br />
McClelland & Co<br />
PO Box 149<br />
Southport<br />
PR8 4GZ<br />
<br />
Tel: +(0) 1704 569871<br />
Fax: +(0) 1704 562234<br />
Mob: <%=h current_user.mobile %><br />
E-mail: <%= current_user.email %><br />
<br />
This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you receive this e-mail in error please notify the originator of the message.
<br /><br />
McClelland & Co has taken every reasonable precaution to ensure that any attachment to this e-mail has been checked for viruses but it is strongly recommended that you carry out your own virus check before opening any attachment. McClelland & Co cannot accept liability for any damage sustained as a result of software virus infection.
</p>
<%= link_to 'Edit Case', edit_kase_path(@kase) %> |
<%= link_to 'Back', kases_path %> |
<a href="#">Top</a>
</div>
<div style="width:120%; height: 20px; background-color: black; margin: 10px 0 0 -19px; padding: 0; background-color: #d4d4d4;"> </div>
<div class="js_option_kaseemails">
<%= link_to_function "Show",
"Element.show('newinstructionemail2');"
%> /
<%= link_to_function "Hide",
"Element.hide('newinstructionemail2');"
%>
</div>
<h3>New Instruction Email</h3>
<div id="newinstructionemail2" style="display:none;">
<p class="kase_email_output">
Hi,<br />
<br />
Many thanks for your instructions in the subject matter.<br />
<br />
We have allocated reference number <%=h @kase.jobno %> to the above claim.<br />
<br />
We have started our inquiries and will be in touch.<br />
<br />
Best Regards,<br />
<br />
<strong><%=h current_user.name %></strong>
<br />
McClelland & Co<br />
PO Box 149<br />
Southport<br />
PR8 4GZ<br />
<br />
Tel: +(0) 1704 569871<br />
Fax: +(0) 1704 562234<br />
Mob: <%=h current_user.mobile %><br />
E-mail: <%= current_user.email %><br />
<br />
This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you receive this e-mail in error please notify the originator of the message.
<br /><br />
McClelland & Co has taken every reasonable precaution to ensure that any attachment to this e-mail has been checked for viruses but it is strongly recommended that you carry out your own virus check before opening any attachment. McClelland & Co cannot accept liability for any damage sustained as a result of software virus infection.
</p>
<%= link_to 'Edit Case', edit_kase_path(@kase) %> |
<%= link_to 'Back', kases_path %> |
<a href="#">Top</a>
</div>
谢谢,
Danny