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Mark hidden fields after user has selected 1st field

stockton

By stockton
in Javascript Help

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stockton Advanced Member

stockton

Posted
Posted

I have the following code which works fine as far as it goes but I would like a method, preferably using jquery, to mark two fields  hidden or displayed depending on user selection.

<?php
ini_set('display_errors','On');
$POST_MAX_SIZE = ini_get('post_max_size');
$maxlifetime = ini_get('session.gc_maxlifetime');
require_once '../Includes/HeaderFunctions.inc';
    $RecordType = $_POST["RecordType"];
    $TopicName = $_POST["TopicName"];
    $Parent = $_POST["Parent"];
    $helpfile = $_POST["helpfile"];
    $Datum = date("Y-m-d");
    $Tyd = date("H:i:s");
    $MaxFileSize = 350000;
    $Message = "";

    if ($_SERVER['REQUEST_METHOD'] == 'POST' && empty($_POST) && $_SERVER['CONTENT_LENGTH'] > 0) {
        $Message = sprintf('The server was unable to handle that much POST data (%s bytes) due to its current configuration', $_SERVER['CONTENT_LENGTH']);
        RaiseError(__FILE__, __LINE__, 3, "", $_SERVER['REQUEST_URI'], $Message);
    }

    if (!empty($_REQUEST['submit']))
        $Button = ($_REQUEST['submit']);
        else
        $Button = '';

    if ($Button == 'Submit')      // Submit button pressed.
        {
        if ($RecordType == 0)
            {           
            $SQL = 'INSERT INTO "Primary"."Help" ("TopicName","TopicBody","Parent","DateCreated","TimeCreated","Counter")';
            $SQL .= "VALUES('".$TopicName."',0,0,now(),now(),0);";
            }
            else
            {
            // Found at http://www.webcheatsheet.com/PHP/file_upload.php
            //Сheck that we have a file
            if ((!empty($_FILES["helpfile"])) && ($_FILES['helpfile']['error'] == 0)) 
                {
                $filename = basename($_FILES['helpfile']['name']);
                $filesize = $_FILES["helpfile"]["size"];
                if (($_FILES["helpfile"]["size"]) > 0 && ($_FILES["helpfile"]["size"] < $MaxFileSize))
                    {
                    //Determine the path to which we want to save this file
                    $newname = dirname(__FILE__).'/uploads/'.$filename;
                    //Check if the file with the same name already exists on the server
                    if (!file_exists($newname)) 
                        {
                        //Attempt to move the uploaded file to it's new place
                        if ((move_uploaded_file($_FILES['helpfile']['tmp_name'],$newname))) 
                            {
                            $Message = "It's done! The file has been saved as: ".$newname;
                            } else {
                            $Message = "Error: A problem occurred during file upload!";
                            }
                        } else {
                        $Message = "Error: File ".$newname." already exists";
                        }       
                    } else {
                    $Message = "Error: Invalid file size ".$filesize." bytes which is greater than ".$POST_MAX_SIZE."in ".$maxlifetime; 
                    }
                }
            if ($Message == "") {
                    $fr = fopen($newname, 'r');
                    $Face = fread($fr, filesize($newname));
                    $FaceString = htmlentities($Face,ENT_QUOTES);
                    fclose($fr);
              unlink($newname);
              $SQL = 'INSERT INTO "Primary"."Help" ("TopicName","TopicBody","Parent","DateCreated","TimeCreated","Counter")';
              $SQL .= "VALUES('".$TopicName."',";
              $SQL .= "'".$FaceString."','".$Parent."',";
              $SQL .= "'now()','now()','0');";
//          $Message = $SQL;
          
              $qw =& $DBConnection->query($SQL);

              if (DB::isError($qw))
                  RaiseError(__FILE__, __LINE__, 3, $qw->getMessage(), $_SERVER['REQUEST_URI'], $SQL);
            }
        }   
    }   
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>Add help</title>
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="Mon, 22 Jul 2000 11:12:01 GMT"
<!-- Put IE into quirks mode -->
<title><?php echo HOSTDESCRIPTOR ?>: HelpPage</title>
<link rel="stylesheet" type="text/css" href="CSS/Help.css" />
<link rel="stylesheet" href="/CSS/custom-theme/jquery-ui-1.7.1.custom.css"/>
<link rel="stylesheet" href="/CSS/SiteWide.css"/>

<script type="text/javascript" src="/JavaScripts/DWjQuery.js"></script>
<script type="text/javascript" src="/JavaScripts/CL/ComponentLoader.js"></script>
<script type="text/javascript">
$(document).ready( function()
    {
    //load the standard headers.
    $("#header").LoadComponent("<? echo STANDARD_HEADER;?>");
    });
    </script>
</head>
<body bgcolor="#eeeeee">
<div id="container">
<center>
<h2>Help Administration</h2><br>
<?php
   if (($_SESSION['UserRights']) < 0)
      {
      $Message = sprintf("%s %d <br> Your authority does not extend to this facility ", __FILE__, __LINE__);
      trigger_error($Message, E_USER_ERROR);
      exit;
      }
?>
<form name="HelpAdd" action="HelpAdd.php" method="post" enctype="multipart/form-data"> 
<table align="center" border="3" cellspacing="0" cellpadding="3">
<tr><td>Record Type:</td>';
<td><select name="RecordType">
<option value='0'>Parent</option>
<option value='1'>Dependant</option><br/>
<tr><td>Topic Title:</td>
<td><input type="text" name="TopicName" ID="TopicName" maxlength="25"></td></tr>
<tr><td>Parent:</td>
<td><select name="Parent">
<?php
    $SQL = 'Select "TopicID", "TopicName" from "Primary"."Help" WHERE "Parent"=0 ORDER BY "TopicID"'; 
    $qw =& $DBConnection->query($SQL);

    if (DB::isError($qw))
            RaiseError(__FILE__, __LINE__, 3, $qw->getMessage(), $_SERVER['REQUEST_URI'], $SQL);
    $RowCounter = $qw->numRows();
    if($RowCounter==0)
        {
        echo "No records found";
        }
    else
        {
        while($Row = $qw->fetchRow(DB_FETCHMODE_ASSOC))
            {
            $ParentID = $Row['TopicID'];
            $ParentName = $Row['TopicName'];
            echo "<option value=$ParentID>$ParentName</option>";
            }
        }
?>
</td></tr>
<tr><td>Topic Body:</td>
<input type="hidden" name="MAX_FILE_SIZE" value="<?php echo $MaxFileSize ?>" />
<td><input name="helpfile" type="file" /></td></tr>

<tr><td colspan="2" align="center">
<input type="submit" name="submit" value="Submit">
<a href="/help.php"><button>Back</a>
</td></tr>
<tr><td colspan="2" align="center">
<?php echo $Message ?>
</td></tr>
</table>
</form>
</center>
</div>
        <div id="header">
                loading...
        </div>

</body>
</html>

 

If the user selects RecordType to be a Parent only the TopicTitle needs completion but if the user selects RecordType Dependant then all fields need to be completed or filled in.

So to cut a long story shorter on selection of RecordType two fields are to either appear or disappear.

Maybe I should start with Parent and Topic Body fields hidden and only if user selects Dependant make them visibly.

Suggestions please.

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