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Client Validation - Restrict Content not working?

Thread began 11/20/2012 6:12 am by Nathon Jones Web Design | Last modified 11/20/2012 1:45 pm by Jason Byrnes | 1072 views | 5 replies |

Nathon Jones Web Design

Client Validation - Restrict Content not working?

We have two simple client validations on our form, one to check that caption text has been entered for a title (form field name="slideshowtitle") and one to check that neither http:// or https:// has been entered in a URL (form field name="slideshowlinkout"). The URL field can, however, be left blank.

The validation is working for the caption text - a value must be entered - however the URL field is allowing submission of http:// and/or .

Here's our form:

<form action="confirm-slideshow.asp" method="post" enctype="multipart/form-data" name="addslideshowFORM" id="addslideshowFORM" onsubmit="WAValidateRQ(document.forms[0].slideshowtitle,'You need to enter some text to accompany your image.',document.forms[0].slideshowtitle,0,true,'text');WAValidateRT(document.forms[0].slideshowlinkout,document.forms[0].slideshowlinkout.value,'You do not need to enter http:// or https:// in your website address.','%20http://%20|, %20https://%20|',document.forms[0].slideshowlinkout,0,false);WAAlertErrors('Please correct the following errors:','',true,document.addslideshowFORM,false);return document.MM_returnValue">
<input name="aID" type="hidden" id="aID" value="<%=cStr(Request.Form("aID"))%>" />
<input name="gID" type="hidden" id="gID" value="<%=cStr(Request.Form("gID"))%>" />

<div>
<label for="slideshowtitle">Caption text for the image:</label>
<input name="slideshowtitle" id="slideshowtitle" type="text" size="25" maxlength="100" tabindex="1" />
</div>

<div>
<label for="slideshowlinkout">Web address the image should link to: <span class="textgrey">(optional)</span></label>
<table width="100%" cellspacing="0" cellpadding="0">
<tr>
<td width="8%" class="textgrey">http://</td>
<td valign="middle"><input name="slideshowlinkout" id="slideshowlinkout" type="text" size="25" maxlength="75" tabindex="2" /></td>
</tr>
</table>
</div>

<div>
<label for="slideshowimg">Select an image (500px x 375px - <a href="help-imagesizes.asp">Image Guidelines</a>):</label>
<input name="slideshowimg" type="file" id="slideshowimg" style="height:35px;width:450px;background-color:#FFFFFF;" tabindex="3" />
</div>

<p><input type="submit" name="Submit" value="Proceed" class="Submitbtn" tabindex="4" /></p>
</form>

...and here is our validation code:

<script type="text/javascript">
<!--
function WAtrimIt(theString,leaveLeft,leaveRight) {
if (!leaveLeft) {
while (theString.charAt(0) == " ")
theString = theString.substring(1);
}
if (!leaveRight) {
while (theString.charAt(theString.length-1) == " ")
theString = theString.substring(0,theString.length-1);
}
return theString;
}

function WAFV_GetValueFromInputType(formElement,inputType,trimWhite) {
var value="";
if (inputType == "select") {
if (formElement.selectedIndex != -1 && formElement.options[formElement.selectedIndex].value && formElement.options[formElement.selectedIndex].value != "") {
value = formElement.options[formElement.selectedIndex].value;
}
}
else if (inputType == "checkbox") {
if (formElement.length) {
for (var x=0; x<formElement.length ; x++) {
if (formElement[x].checked && formElement[x].value!="") {
value = formElement[x].value;
break;
}
}
}
else if (formElement.checked)
value = formElement.value;
}
else if (inputType == "radio") {
if (formElement.length) {
for (var x=0; x<formElement.length; x++) {
if (formElement[x].checked && formElement[x].value!="") {
value = formElement[x].value;
break;
}
}
}
else if (formElement.checked)
value = formElement.value;
}
else if (inputType == "radiogroup") {
for (var x=0; x<formElement.length; x++) {
if (formElement[x].checked && formElement[x].value!="") {
value = formElement[x].value;
break;
}
}
}
else if (inputType == "iRite") {
var theEditor = FCKeditorAPI.GetInstance(formElement.name) ;
value = theEditor.GetXHTML(true);
}
else {
var value = formElement.value;
value=value.replace(/<p>(\&\#160\;)*<\/p>/,"");
}
if (trimWhite) {
value = WAtrimIt(value);
}
return value;
}

function WAAddError(formElement,errorMsg,focusIt,stopIt) {
if (document.WAFV_Error) {
document.WAFV_Error += "\n" + errorMsg;
}
else {
document.WAFV_Error = errorMsg;
}
if (!document.WAFV_InvalidArray) {
document.WAFV_InvalidArray = new Array();
}
document.WAFV_InvalidArray[document.WAFV_InvalidArray.length] = formElement;
if (focusIt && !document.WAFV_Focus) {
document.WAFV_Focus = focusIt;
}

if (stopIt == 1) {
document.WAFV_Stop = true;
}
else if (stopIt == 2) {
formElement.WAFV_Continue = true;
}
else if (stopIt == 3) {
formElement.WAFV_Stop = true;
formElement.WAFV_Continue = false;
}
}

function WAValidateRQ(formElement,errorMsg,focusIt,stopIt,trimWhite,inputType) {
var isValid = true;
if (formElement.length && inputType.toLowerCase()!="radio" && inputType.toLowerCase()!="select") formElement=formElement[0];
if (!document.WAFV_Stop && !formElement.WAFV_Stop) {
var value=WAFV_GetValueFromInputType(formElement,inputType,trimWhite);
if (value == "") {
isValid = false;
}
}
if (!isValid) {
WAAddError(formElement,errorMsg,focusIt,stopIt);
}
}

function WAValidateRT(formElement,value,errorMsg,notAllowed,focusIt,stopIt,required) {
var isValid = true;
var augValue = " " + value + " ";
var tempVal = augValue.toLowerCase();
if ((!document.WAFV_Stop && !formElement.WAFV_Stop) && !(!required && value=="")) {
var notAllowed = notAllowed.split(", ");
for (var x=0; x<notAllowed.length; x++) {
var notAllowedInfo = notAllowed[x].split("|");
notAllowedInfo[0] = unescape(notAllowedInfo[0]);
notAllowedInfo[1] = unescape(notAllowedInfo[1]);
while (tempVal.indexOf(notAllowedInfo[0].toLowerCase())>=0) {
isValid = false;
var theIndex = tempVal.indexOf(notAllowedInfo[0].toLowerCase())
tempVal = tempVal.substring(0,theIndex) + tempVal.substring(theIndex+notAllowedInfo[0].length);
if (notAllowedInfo[1]!="") {
theIndex = augValue.toLowerCase().indexOf(notAllowedInfo[0].toLowerCase())
augValue = augValue.substring(0,theIndex) + notAllowedInfo[1] + augValue.substring(theIndex+notAllowedInfo[0].length);
}
}
}
}
if (required && value=="")
isValid = false;
if (!isValid) {
WAAddError(formElement,errorMsg,focusIt,stopIt);
formElement.value = augValue.substring(1,augValue.length-1);
}
}

function WAAlertErrors(errorHead,errorFoot,setFocus,submitForm,allowOverride) {
if (!document.WAFV_StopAlert) {
document.WAFV_StopAlert = true;
if (document.WAFV_InvalidArray) {
document.WAFV_Stop = true;
var errorMsg = document.WAFV_Error;
if (errorHead!="")
errorMsg = errorHead + "\n" + errorMsg;
if (errorFoot!="")
errorMsg += "\n" + errorFoot;
document.MM_returnValue = false;
if (document.WAFV_Error!="") {
if (allowOverride) {
if (confirm(errorMsg.replace(/&quot;/g,'"'))) {
document.MM_returnValue = true;
return;
}
}
else {
alert(errorMsg.replace(/&quot;/g,'"'));
}
}
else if (submitForm)
submitForm.submit();
if (setFocus && document.WAFV_Focus) {
if (document.getElementById(document.WAFV_Focus.name+"___Config") && document.WAFV_Focus.type.toLowerCase() == "hidden") {
var theEditor = FCKeditorAPI.GetInstance(document.WAFV_Focus.name);
theEditor.EditorWindow.focus();
setTimeout("setTimeout('document.WAFV_Stop = false;document.WAFV_StopAlert = false;',1)",1);
}
else {
document.tempFocus = document.WAFV_Focus;
setTimeout("document.tempFocus.focus();setTimeout('document.WAFV_Stop = false;document.WAFV_StopAlert = false;',1)",1);
}
}
else {
document.WAFV_Stop = false;
document.WAFV_StopAlert = false;
}
for (var x=0; x<document.WAFV_InvalidArray.length; x++) {
document.WAFV_InvalidArray[x].WAFV_Stop = false;
}
}
else {
document.WAFV_Stop = false;
document.WAFV_StopAlert = false;
if (submitForm) {
submitForm.submit();
}
document.MM_returnValue = true;
}
document.WAFV_Focus = false;
document.WAFV_Error = false;
document.WAFV_InvalidArray = false;
}
}
//-->
</script>

Hope someone can spot the error as we've deleted and rebuilt the form 3 times now and are no further forward.

Thank you.
NJ

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Jason ByrnesWebAssist

I recommend using server validation instead of client validation for this. New versions of Form builder no longer offer client validation due to many issues inherent in using client side validation.

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Nathon Jones Web Design

Server validation problem

Thanks Jason. We had tried using Server validation but our form is an INSERT form and so the data is inserted to database prior to jumping out to the server validation which, as I understand it, can't be on the same page as your form. Is that correct?

Also, when initially arriving at the INSERT form page the page picks up on 2 form variables from the previous page. These variables are lost when we redirect to an error page.

Are we misunderstanding how this works?

Thank you
NJ

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Jason ByrnesWebAssist

the validation will take place before the insert if you make sure the server validation code block is before the insert code block.


  Also, when initially arriving at the INSERT form page the page picks up on 2 form variables from the previous page.  



use hidden elements to capture the form variables passed in and resend them when the form is submitted.

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Nathon Jones Web Design

No result

We've added Server Validation to our INSERT form page, as you've recommended, but it is causing a type mismatch error to occur?

Microsoft VBScript runtime error '800a000d'
Type mismatch: '[string: ""]'
/tradmin/add-slideshow.asp, line 189

Line 189 is a pretty standard bit of code that checks for a form variable:

<p>Add a new slideshow image for <%IF cStr(Request.Form("aID")) > 0 Then%><%=(rsUSER.Fields.Item("tradfirstname").Value)%>&nbsp;<%=(rsUSER.Fields.Item("tradsurname").Value)%><%ELSE%><%=(rsGROUPS.Fields.Item("groupname").Value)%><%End IF%></p>

This code works fine until we add the Server Validation! I've attached the page for review.

Thank you.
NJ

Attached Files
add-slideshow.zip
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Jason ByrnesWebAssist

I have created a support ticket so we can look into this issue further.

To view and edit your support ticket, please log into your support history:
supporthistory.php

If anyone else is experiencing this same issue, please append to this thread.

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