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ASP: variabel eksisterer kun utenfor if-test

josephseto

Av josephseto
i Programmering og webutvikling

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josephseto

josephseto

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Kan du koke ned koden så du får vist fram et eksempel som demonstrerer problemet? Det er ikke umiddelbart klart hva du sliter med.

 

Det er altså variabelen 'cat' under stage2 som ikke eksisterer i if-testen. Hmm...

 

<% option explicit %>
<!--#include file="dbconn.asp"-->

<%
 dim cat
cat = request.QueryString("pic")
if cat="" then cat = "0"
%>

<html>
<head>
 <title>Beaches around southern Sydney</title>
 <link href="style1.css" rel="stylesheet" type="text/css">

<script type="text/javascript">
function goBack()
 {
 window.history.back()
 }
</script>

</head>
<body>



<div align="center">


<div id="container">

<div id="center">
	 	<div id="head">
  <!--#include file="head.asp"-->
			</div>		
<div id="inner_center">
<div id="main_spaces_images">

<%
dim SQL, info
'				0		 1				  2				  3			4	   5		 6		 7
SQL="select imageID, imageFilename, imagePhotographer, imageDescription, beachNum, beachID, beachName, imageDate "&_
	  "from imageTable, beachTable "&_
	  "where beachNum=beachID and imageID="&cat
  'response.write SQL&"<br><br>"
set info=conn.execute(SQL)

if info.eof then
  response.write "<div id=""box2"">No Data Found</div>"
else
%>

  <div id="box2">
	<img src="images/<% =info(1) %>" alt="Image loading or missing"><br />

	Beach: <% =info(6)%>
			Photographer: <% =info(2) %>
							Image taken: <% =info(7) %>
											Description: <% =info(3) %>
											</div>

<%
end if 
%>


<!-- STARTING COMMENTS LIST -->

<%
dim list_comment_info
 '				0		 1					 2			   3		 4		5	   6	   7
SQL="select commentsID, commentsUserName, commentsEmail, commentsText, imageNum, imageID, beachID, beachNum  "&_
	  "from imageTable, commentsTable, beachTable "&_
	  "where imageNum=imageID and beachNum=beachID and imageNum="&cat
	'response.write SQL&"<br><br>"
  set list_comment_info = conn.execute(SQL)

  if list_comment_info.eof then
	'response.write "No Images Found"&chr(13)
  else
	do%>
			<div id="box2">
		   #<% =list_comment_info(0)%> By: <% =list_comment_info(1)%>	Email: <% =list_comment_info(2) %><br />
			Comment: <% =list_comment_info(3) %><br />
				</div>
	  <%list_comment_info.movenext
	loop until list_comment_info.eof
end if 
%>

<!-- ENDING COMMENTS LIST -->





<!-- STARTING ADD COMMENTS -->

<%
 dim stage
 stage = request.form("stage")
 if stage = "" then stage=1
%>

<%
response.write cat&"<br><br>"
 '------------------------------------------------------------------
 if stage = 1 then
 '------------------------------------------------------------------
%>

  <div id="box2">
	<form action="images.asp" method="post">
	  <input type="hidden" name="stage" value="2">
	  Your Name:<br />
	  <input type="text" name="new_user_name" size="20"><br />
				Email:<br />
	  <input type="text" name="new_email" size="20"><br />
				Comment:<br />
				<textarea name="new_comment" id="comment" cols="50" rows="4" tabindex="4"></textarea><br />

	  <input type="submit" value="Add Comment"> 
	</form>
  </div>
<%
 '------------------------------------------------------------------
elseif stage = 2 then
 '------------------------------------------------------------------

 response.write chr(13)
 response.write "	  <div id=""box2"">"&chr(13)

 dim user_name, email, comment
 user_name=Request.Form("new_user_name")
email=Request.Form("new_email")
 comment=Request.Form("new_comment")

  '--- check to see whether there already is a region of that name...
 SQL="select commentsID from commentsTable where commentsText='"&comment&"'"
 set info = conn.execute(SQL)

 if info.eof then

'--- there is no comment of that name at present, so do the insert
	SQL="INSERT INTO commentsTable (commentsUserName, commentsEmail, commentsText, imageNum) VALUES ('" & user_name & "', '" & email & "', '" & comment & "', '" & cat & "')"


conn.execute(SQL)
response.write "		Insertion completed."&chr(13)

 else
'--- there is already a comment of that name...
response.write "		Sorry, that comment is already in the database."&chr(13)
 end if

 response.write "	  </div>"&chr(13)
response.write cat&"<br><br>"

 '------------------------------------------------------------------
 end if  ' stage
 '------------------------------------------------------------------

response.write cat&"<br><br>"
response.write "	  <br clear=""left""><br>"&chr(13)
 if stage=2 then 
response.write chr(13)
response.write "	  <i>di va di</i><br><br>"&chr(13)
response.write "	  <a href=""listcomments.asp"">Show Comments List</a> |"
 end if
%>
</div>
 </div>


</div><!-- End box2 div -->
<!-- ENDING ADD COMMENTS -->

<div id="back_button">
<br>
<input type="button" value="Back" onClick="goBack()" />
</div>
</div>

</div>


</body>
</html>
<% conn.close %>

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kaian

kaian

Skrevet
Skrevet
koke ned koden

 

Det er altså variabelen 'cat' under stage2 som ikke eksisterer i if-testen. Hmm...

 

altfor mye kode

Jeg må løpe nå, men gi neste person som kan se på problemet for deg et bedre utganspunkt ved faktisk å koke ned koden til et eksempel som demonstrerer problemet.

 

Og hva er feilmeldingen egentlig?

At variabelen ikke eksisterer, eller at den ikke har verdi?

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  • 4 uker senere...

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