[Resolved] validating a [] type of form field

PJNEW

How would one validate a field that produces a variable and is expressed in my code like this?

<input type='text' class='formcont' size='6' name='quan[]' ID='Quantity'>

This produces an array of quantities. I cannot work out how to validate this at all. Any help appreciated. BY the way, I am passing the variable in this manner because it is part of a more complicated bit of code that produces the form.....but I cannot remember the reason 😕

itshim

Without knowing exactly what you're validating for, I cannot go into specifics, but basically you can set up a loop to run through the array and validate each element that way.

Hope this helps...If I misunderstood your question I apologize

Thanks,
Itshim

PJNEW

Thanks itshim, no you didn't misunderstand. However, I cannot seem to be able to establish a loop fo this item. When I do in php, it cancels out my other validations or alternatively, it is the other way round. I am simply validating for a vlaue and a number. (not isNumeric ie. mathematical). I did have aprevios thread, but got no joy, so I thought I would reword the question. This is the link
As you will see, it seemed that I may have confused people, so I thought I would start from scratch. Validating the quantity field is important, but needs to work with thte normal validations e-mail, name etc. Thanks

weevil

Are you talking about validating the form on submit with JavaScript?

itshim

I followed the link in your last post and am confused at exactly what you are trying to accomplish with the foreach loop. Could you repost the code with the new foreach?

Thanks,
Itshim

PJNEW

Well a Javascript solution would be a good start, but I know I need to have a serverside validation a as well. I will post the code as I have it. It has been going on so long, I need to check it thru'...Thanks for your help...Bear with me.

weevil

This was the only way I was able to get it to work in JavaScript, using getElementById.
Add this to your JavaScript validation fuction

var allInputs = document.getElementById("cust").getElementsByTagName("input")
  for (var i = 0; i < allInputs.length; i++) {
    if (allInputs[i].value == "") {
      alert ("Please enter a number");
      allInputs[i].focus();
      return(false);
    }
  }

And add a span tag around the inputs that you want validated with this function

<span id="cust">
<?
$x=0;
while ($x < 5) {
  print "<input type=\"text\" name=\"numbers[]\"><br>";
  $x++;
}
?>
</span>

PJNEW

Thanks for that Weevil, I applied that Javascript and it is now working pretty well. Mozilla has a prob with it....but that can wait. So, at least I have some validation clientside. So now to the server side. I have looked at the code again, and it seems too much of a mishmash, so probably better to go back to basics. I need to validate the usual e-mail, name, telephone, town etc, as well as the rows produced by the form relating to quantities of items chosen as per the Javascript. I would like to validate this on a seperate validation.php page. The idea being that if it is validated, then I would echo out a html page as well as updating the database and sending e-mails etc. (I can do all that) and if it does not validate, then re-present the whole form again, preferably highlighting the fields that are wrong. I have seen all sorts of combinations of solutions...but I think I am approaching it wrong am messing up the code in the process. So better if I start from scratch. How do others approach this? Thanks for taking the time to look, by the way, itshim.