CODEWITHSUNDEEP
coldfusion
user164701
user164701

Reputation: 817

Empty page displayed with cfcontent in a popup (unless manual refresh)

I have a ColdFusion page calling a cfm page as a popup through window.open(..). The target page is a cfm that loads a PDF file. The called page code is the following: 

<cfcontent type="application/pdf" file="/deploy/cfusion.ear/cfusion.war/myPDF.pdf"/>
<cfflush>

<script language="javascript">
 window.location.reload();
</script>

Unfortunately, I am getting only a blank page unless I manually refresh the page (going to the popup URL bar and hitting Enter) to have its contents displayed by the browser.

What is strange is that if I replace the caller page code from window.open() to document.url = the PDF is displayed without the need of refreshing the page.

Do you have any suggestions here how to call the target page as a popup and having it load without the need of a manual refresh?

Thanks.

Upvotes: 1

Views: 1385

Answers (2)

user164701
user164701

Reputation: 817

The solution I adopted was that of calling a proxy page and then that proxy page generates the PDF file. So:

  1. window.open('2') // open in a popup the PDF

  2. document.location = '3' // proxy

  3. cfcontent type='application/pdf' file='...' // generate PDF

Why I cannot have 1 and 3 only is for now a mystery but in my case it works perfectly.

Upvotes: 0

Jake Feasel
Jake Feasel

Reputation: 16955

The problem is that you are mixing javascript and PDF content together. It should really just be this:

<cfcontent type="application/pdf" file="/deploy/cfusion.ear/cfusion.war/myPDF.pdf"/>

This will return the full contents of that PDF to the browser.

What were you trying to do with the javascript code?

edit It sounds like it could be something to do with caching. To prevent that, try adding some cache control headers to your file:

<cfheader name="expires" value="#getHttpTimeString(now())#"> 
<cfheader name="pragma" value="no-cache"> 
<cfheader name="cache-control" value="no-cache, no-store, must-revalidate"> 
<cfcontent type="application/pdf" file="/deploy/cfusion.ear/cfusion.war/myPDF.pdf"/>

If that doesn't work, try adding this one too: 

<cfheader name="Content-Disposition" value="attachment; filename=myPDF.pdf">

Upvotes: 2

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