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ColdFusion passing variables multiple times.

Posted on 2009-06-30
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Last Modified: 2012-05-07
I am trying to pass CF Varaibles from page 1 to  execute a new query on page 2.  that is working....

Then I am trying to pass those varaibles in page 2 to a page that allows the user to save the output into excel on there desktop (page 3)

For some reason the varaibles are NOT passing to my excel page... The table headers are showing, but the query results are not... Please help....  

Code enclosed

<!------------Button from page 1 to link to page 2----->

<onClick="openActivity(Page2.cfm?in_var_one=#urlencodedformat(in_var_one)#&in_var_two=#in_var_two');return false")  value="Button1"></td>
 

<!-----on Page 2... its grabbing the varaibles from here ---->

<cfif isdefined ("url.in_var_one")>

<CFSET in_var_one = "#url.in_var_one#">

 </cfif>

 <cfif isdefined ("url.in_var_one")>

 <CFSET in_var_one = "#url.in_var_one#">

 </cfif>

<!---- this works the varaibles pass and show the output in a new window-----> 

<!---- now here is my code for saving to excel on page 2 to page 3 ----->
 

<!--- set the default to false (ie not a download )--->

<cfparam name="url.download" default="0">
 

<!--- if this is a download ...--->

<cfif url.download eq 1>

<cfheader name="Content-Disposition" value="attachment; filename=Budget.xls">

	<cfcontent type="application/vnd.ms-excel" reset="true">

</cfif>
 
 

<!---- BUTTON to link to Page 3-------> 

<!--- if this is not a download, display the button ...--->

<cfif url.download neq 1>

	<cfoutput>

	<form method="get" action="Page3.cfm?in_var_one=#urlencodedformat(in_var_one)#&in_var_two=#in_var_two#;return false;rr=#RandRange(1, 5000)#">

		<input type="hidden" name="download" value="1">

		<input type="submit" value="Export to Excel">

	</form>

	</cfoutput>

</cfif>
 

<!-----on Page 3... its grabbing the varaibles from here same as page 2 ---->

<cfif isdefined ("url.in_var_one")>

<CFSET in_var_one = "#url.in_var_one#">

 </cfif>

 <cfif isdefined ("url.in_var_one")>

 <CFSET in_var_one = "#url.in_var_one#">

 </cfif>
 
 

<!---- at the bottom of the page is my excel header to save all content in excel-----> 

<cfheader name="Content-Disposition" value="attachment; filename=Budget.xls">

<cfcontent type="application/vnd.ms-excel" reset="true">
 

<------now the page links and the excel sheet saves but the varaibles are NOT passing so the excel sheet has no data... what am I doing wrong ???? ------->

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Question by:plusone3055
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8 Comments
 
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Expert Comment

by:js_vaughan
Comment Utility
Try commenting out your header to see if the data shows then.  You have <cfcontent reset="true"> in there more than once; i suspect that is your problem.
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by:plusone3055
Comment Utility
should I comment

<cfheader name="Content-Disposition" value="attachment; filename=Budget.xls">

 out in page 2 or 3 ????



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Expert Comment

by:js_vaughan
Comment Utility
sorry, my mistake.. those were on 2 different pages.

Here is the problem : action="Page3.cfm?in_var_one=#urlencodedformat(in_var_one)#&in_var_two=#in_var_two#;return false;rr=#RandRange(1, 5000)#"

you cant pass your URL variables like this to coldfusion.  Set your variables in hidden fields.
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plusone3055 earned 0 total points
Comment Utility
can you demonstrate for me please

I have the variables on page 3 hidden like so.....


<cfoutput>
                  <input type="hidden" name="in_var_one"  value="#in_var_one#">
                  <input type="hidden" name="in_var_two" value="#in_var_two#">



      </cfoutput>

there done the same way in page 2 coming from page 1

can you please show me how to link them through coldfusion...

thank you so much
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Expert Comment

by:js_vaughan
Comment Utility
See the code comment below.  I assume you are using "rr" to prevent client caching of the URL?  If so, use a time-based variable instead like demonstrated below.
You currently have this :

<form method="get" action="Page3.cfm?in_var_one=#urlencodedformat(in_var_one)#&in_var_two=#in_var_two#;return false;rr=#RandRange(1, 5000)#">

	<input type="hidden" name="download" value="1">

	<input type="submit" value="Export to Excel">

</form>
 

You need something like this :
 

<form method="get" action="Page3.cfm">

	<input type="hidden" name="download" value="1">

	<input type="hidden" name="in_var_one" value="#urlencodedformat(in_var_one)#">

	<input type="hidden" name="in_var_two" value="#urlencodedformat(in_var_two)#;">

	<input type="hidden" name="time" value="#urlencodedformat(now())#">

	<input type="submit" value="Export to Excel">

</form>

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Author Comment

by:plusone3055
Comment Utility
thank you for your demo unfortunatly it yielded the same results the table was there but the output was not
this is very strange it works fine when going from one page to another but add the excel into it doesnt pass the variavles..

any other suggestions ????
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Author Comment

by:plusone3055
Comment Utility
im going to give up on this and just use java
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Expert Comment

by:Plucka
Comment Utility
Why not just put them in session variables.
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