Next / Previous button throwing an error. Please help

Question

I wrote this next previous button code and it is throwing an
error. I don't understand why or what I am missing.
I want it to show 4 records for a page. Here is my code and
the error.
Code:
<cfset CurrentPage=GetFileFromPath(GetTemplatePath())>
<cfquery name="feat" datasource="#sitedatasource#"
username="#siteUserID#" password="#sitePassword#" maxRows=4>
SELECT feature.title AS ViewField1, feature.MYFile AS
ViewField2, feature.ID AS ID
FROM feature
</cfquery>
<cflock timeout="2" scope="application"
type="READONLY">
<cfset application.feat=feat>
</cflock>
<cfset MaxRows_feat=4>
<cfset
StartRow_feat=Min((PageNum_feat-1)*MaxRows_feat+1,Max(feat.RecordCount,1))>
<cfset
EndRow_feat=Min(StartRow_feat+MaxRows_feat-1,feat.RecordCount)>
<cfset
TotalPages_feat=Ceiling(feat.RecordCount/MaxRows_feat)>
<cfset QueryString_feat=Iif(CGI.QUERY_STRING NEQ
"",DE("&"&CGI.QUERY_STRING),DE(""))>
<cfset
tempPos=ListContainsNoCase(QueryString_feat,"PageNum_feat=","&")>
<cfif tempPos NEQ 0>
<cfset
QueryString_feat=ListDeleteAt(QueryString_feat,tempPos,"&")>
</cfif>
<cflock timeout="2" scope="application"
type="READONLY"><cfoutput query="feat"
maxrows="4">#ViewField1#</cfoutput></cflock>
<cfif PageNum_feat GT 1>
<a
href="#CurrentPage#?PageNum_feat=#Max(DecrementValue(PageNum_feat),1)##QueryString_feat#"
onmouseout="MM_swapImgRestore()"
onmouseover="MM_swapImage('Previous','','../img/previous-over.gif',1)"><img
src="../img/previous.gif" alt="Previous Records" name="Previous"
width="96" height="27" border="0" id="Previous" /></a>
<cfif PageNum_feat LT TotalPages_feat>
<a
href="#CurrentPage#?PageNum_feat=#Min(IncrementValue(PageNum_feat),TotalPages_feat)##Quer yString_feat#"
onmouseout="MM_swapImgRestore()"
onmouseover="MM_swapImage('next','','../img/next-over.gif',1)"><img
src="../img/next.gif" alt="Next Record" name="next" width="96"
height="27" border="0" id="next" /></a>
The Error:
Variable PAGENUM_FEAT is undefined.
The error occurred in
C:\Websites\x9vdzd\feature\featured.cfm: line 8
6 : </cfquery>
7 : <cfset MaxRows_feat=4>
8 : <cfset
StartRow_feat=Min((PageNum_feat-1)*MaxRows_feat+1,Max(feat.RecordCount,1))>
9 : <cfset
EndRow_feat=Min(StartRow_feat+MaxRows_feat-1,feat.RecordCount)>
10 : <cfset
TotalPages_feat=Ceiling(feat.RecordCount/MaxRows_feat)>
I thought I had it defined! What am I missing?
Thanks
Phoenix

Answer 1

that is strange... it should work fine - it does in my tests.
here is somewhat updated & modified code to try. i have
included
comments to try and explain what is being done.
basic logic is as follows:
-form is submitted
-check if file has been selected
-try uploading new file
-if new file upload succeeds, delete old file if it exists
(as part of
updating existing record, as new records obviously would not
have any
old image)
-update/insert record data as necessary
here's the code:
<cfif isdefined("form.feat_OK")><!--- form submitted
--->
<!--- set file uploading vars --->
<cfparam name="fileuploaded" type="boolean"
default="false">
<cfparam name="uploadedfile" default="">
<cfset pathToFile = "c:\websites\x9vdzd\img\feature\">
<!--- --->
<cfif len(trim(form.MYFile))><!--- if a file has
been selected --->
<!--- try uploading new file --->
<cftry>
<cffile Action="upload" filefield="MYFile"
accept="image/gif,
image/jpg, image/jpeg, image/pjpeg"
destination="#pathToFile" nameconflict="MAKEUNIQUE">
<cfset fileuploaded = true>
<cfset uploadedfile = cffile.serverfile>
<cfcatch type="any">
<!--- if upload did not suceed, reset file uploading vars
--->
<cfset fileuploaded = false>
<cfset uploadedfile = "">
<!--- this can be further enhanced by setting some var to
hold error
message and return it to user --->
</cfcatch>
</cftry>
</cfif>
<cfif form.id gt 0><!--- we are updating an
existing record --->
<!--- if new file upload was successful and the feature
has an image
associated with it - delete old image --->
<cfif fileuploaded is true AND
len(trim(form.oldimage))>
<cfif FileExists(pathToFile & form.oldimage)>
<cffile action="delete" file="#pathToFile &
form.oldimage#">
</cfif>
</cfif>
<cfquery datasource="#sitedatasource#"
username="#siteUserID#"
password="#sitePassword#">
UPDATE feature
SET
feature.title=<cfqueryparam cfsqltype="cf_sql_varchar"
value="#form.title#">,
feature.Body=<cfqueryparam cfsqltype="cf_sql_longvarchar"
value="#form.PDSeditor#">,
feature.MYFile=<cfqueryparam cfsqltype="cf_sql_varchar"
value="#uploadedfile#" null="#NOT fileuploaded#">
WHERE ID = <cfqueryparam value="#form.ID#"
cfsqlType="CF_SQL_INTEGER">
</cfquery>
<cfelse><!--- we are inserting a new record --->
<cfquery datasource="#sitedatasource#"
username="#siteUserID#"
password="#sitePassword#">
INSERT INTO feature
(title, body, MYFile)
VALUES
(<cfqueryparam cfsqltype="cf_sql_varchar"
value="#form.title#">,
<cfqueryparam cfsqltype="cf_sql_longvarchar"
value="#form.PDSeditor#">,
<cfqueryparam cfsqltype="cf_sql_varchar"
value="#uploadedfile#"
null="#NOT fileuploaded#">)
</cfquery>
</cfif>
<!--- relocate user to previous page after insert/update
--->
<cflocation url="feature-manager.cfm">
</cfif>
hth
Azadi Saryev
Sabai-dee.com
http://www.sabai-dee.com