Check for empty fields.... NEED HELP

npereira

Here is my script:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<TITLE>Les Harfangs de Gatineau HTML Editor</TITLE>
</head>
<body>
<form action="../inc/insert.php" name="editor" method="post">
<table align="center" width="100%" cellpadding="0" cellspacing="0"> 
<tr> 
<td> 
</td>
<td>
Title: <? echo '<input name="title" value="'.$title.'">'; ?> 
Changed Date: <? echo '<input name="changedate" value="'.$changedate.'">'; ?>
Date: <? echo '<input name="date" value="'.$date.'">'; ?>
<br>
Author: <? echo '<input name="author" value="'.$author.'">'; ?>
Page Name: <? echo '<input name="pagename" value="'.$pagename.'">'; ?>
<br> 
Main Document: <? echo '<input name="document" value="'.$document.'">'; ?>
<br> 
Side Headlines: <? echo '<input name="sideheadline" value="'.$sideheadline.'">'; ?> 
Side Document: <? echo '<input name="sidedocument" value="'.$sidedocument.'">'; ?> 
<table>
</table>
</td>
</tr>
</table>
<input type="submit" value="Insert page!"> <input type="button" value="Return" onClick='window.open("editpage.php", "_self")'></form>
</body>
</html>

How can I make sure that the input name is not empty? Specificaly $pagename?

superwormy

You can use isset() to check if a var is set, or check with if (!$varname), or use empty(), or strlen() if its a string...

You so could have just looking in the manual to find all those too...

shastry

Hi,

Before posting the data you can validate using JavaScript.. but I suggest you to go thru superwormy's method..

Hope this will help you!!

npereira

My problem is i'm not code guru, and I don't know where the code should go!

kenari

You can use the Javascript to solve your problem, here i share the javascript I use to validate my form entry.

Copy the following code and Paste it to before the </head>

function MM_findObj(n, d) { //v4.0
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers.document);
if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_validateForm() { //v4.0
var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args);
if (val) { nm=val.name; if ((val=val.value)!="") {
if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
} else if (test!='R') {
if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
min=test.substring(8,p); max=test.substring(p+1);
if (val<min || max<val) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
} } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
} if (errors) alert('The following error(s) occurred:\n'+errors);
document.MM_returnValue = (errors == '');
}
//-->
</script>

Then on your Form Handle, add this code

<form method="post" action="yoursite.php" onSubmit="MM_validateForm('FirstName','','R','LastName','','R'">

If you need to validate more fields, just add the fields like this :

Add to check the Password field
Add a comma after the last 'R' and continue typing 'Password','','R' like this:

'FirstName','','R','LastName','','R','Password','','R'

Add to check the Confirm Password field
Add a comma after the last 'R' and continue typing 'ConfirmPassword','','R' like this:

'FirstName','','R','LastName','','R','Password','','R','ConfirmPassword','','R'

at the end you form handle should look like this:

<form method="post" action="yoursite.php" onSubmit="MM_validateForm('FirstName','','R','LastName','','R','Password','','R','ConfirmPassword','','R'">

I hope this can solve your problem.

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npereira

Thanks, I'll try that!

npereira

This is not working. Even if I dont enter anything, the entry still gets created.

Here is the addpage.php file again:

MikeA

Ok, I'm not sure if this will fix the problem, but here is how I do it:

When the click the submit button it goes to another page...I'm assuming. At the top of that page put something like:

<?PHP
  if ($pagename == "") {print "Please Enter the Page Name.  Press your back button to re-enter it";}
?>