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issue using jquery/javascript submit() to send form to php

Posted on 2010-08-23
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Last Modified: 2012-05-10
Hello,

I'm trying to use the javascript submit() to submit my form from my dialog window instead of using the input submit button in the form.  The form never gets submitted when I call the  $("#uploadFrm").submit(); any suggestions?

<?php
      $folder = 'images/';
      $orig_w = 500;
      $caption = $_POST[caption]; 
      $albumCoverImage = $_POST[albumCoverImage]; 
      if( isset($_POST['submit']) )
      {
            $imageFile = $_FILES['image']['tmp_name'];
            $filename = basename( $_FILES['image']['name']);
            $info = pathinfo($folder.$filename);
            $fileext = $info['extension'];
            list($width, $height) = getimagesize($imageFile);            
            $src ='';
            if (strtolower($fileext) == 'png') {
                  $src = imagecreatefrompng($imageFile);
            }
            else if(strtolower($fileext) == 'gif'){
                  $src = imagecreatefromgif($imageFile);
            }
            else if(strtolower($fileext) == 'jpg'){
                  $src = imagecreatefromjpeg($imageFile);
            }
            else{
                  echo "File type not supported, .gif, .jpg or .png required!";
            }                  
            $orig_h = ($height/$width)* $orig_w;
            $tmp = imagecreatetruecolor($orig_w, $orig_h);
            imagecopyresampled($tmp, $src, 0,0,0,0,$orig_w,$orig_h,$width,$height);      
            if (strtolower($fileext) == 'png') {
                  imagepng($tmp, $folder.$filename,100);
            }
            else if(strtolower($fileext) == 'gif'){
                  imagegif($tmp, $folder.$filename,100);
            }
            else if(strtolower($fileext) == 'jpg'){
                  imagejpeg($tmp, $folder.$filename,100);
            }
            else{
                  echo "File type not supported, .gif, .jpg or .png required!";
            }
            imagedestroy($tmp);
            imagedestroy($src);
            $filename = urlencode($filename);
            header("Location: crop.php?filename=$filename&height=$orig_h");
      }
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
    <head>
            <title>Opus1 Image Upload</title>
            <link type="text/css" href="../jqueryui/css/ui.all.css" rel="stylesheet" />
            <script type="text/javascript" src="../js/jquery-1.3.2.js"></script>
            <script type="text/javascript" src="../jqueryui/ui/ui.core.js"></script>
            <script type="text/javascript" src="../jqueryui/ui/ui.resizable.js"></script>
            <script type="text/javascript" src="../jqueryui/ui/ui.dialog.js"></script>            
            <script type="text/javascript" src="../jqueryui/ui/effects.core.js"></script>
            <script type="text/javascript" src="../js/jquery.opacityrollover.js"></script>                  
            <link type="text/css" href="../jqueryui/css/demos.css" rel="stylesheet" />
            <link type="text/css" href="../jqueryui/css/ui.theme.css" rel="stylesheet" />
            <link rel="stylesheet" href="../css/basic.css" type="text/css" />
            <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
            <script type="text/javascript">
            $(document).ready(function() {
                  $("#upload").click(function() {
                        alert('Handler for .submit() called.');
                        $('#addAlbumDialog').dialog('open');                                          
                  });
                  $("#addAlbumDialog").dialog({
                  bgiframe: true,
                  autoOpen: false,
                  height: 400,
                  width: 400,
                  modal: true,
                  buttons: {
                        'Save': function() {
                                          var caption=$("#captionAlbum");
                                          var albumCoverImage=$("#albumCoverImage"); 
                                          var albumCover=$("#albumCover"); 
                                          //alert(albumCover.val());
                                          //$.post("../addAlbumdb.php", {caption:caption.val(),albumCoverImage:albumCoverImage.val()});
                                          $(this).dialog('close');
                                          alert("about to post");
                                          $("#uploadFrm").submit();      
                        },
                        Cancel: function() {
                              $(this).dialog('close');
                        }
                  },
                  close: function() {
                        //allFields.val('').removeClass('ui-state-error');
                                }
                        });
                  });
                  function createNewAlbum(albumSelected)
                  {
                        if(albumSelected == 1){
                              $('#addAlbumDialog').dialog('open');
                        }      
                  }
            </script>
    </head>
    <body>
            <h1>Opus1 Gallery - Image Upload</h1>
            <form id="uploadFrm" action="<?php echo $_SERVER['PHP_SELF'];?>" method="post" enctype="multipart/form-data">
                  <p>
                        <input type="file" name="image" id="image" size="50"/>
                        <input type="button" id="upload" value="Upload!"/>
                        <input type="submit" name="submit" value="Upload" id="submit" style="display: none"/>
                  </p>                  
            </form>      
            <div id="addAlbumDialog" title="Add Album" style="display:none">                  
                        <fieldset>
                        <br />
                        <label for="captionAlbum">Caption:</label>
                        <input id="captionAlbum" type="text" name="captionAlbum"/> 
                        <br />
                        <label for="albumCover">Album Cover:</label>
                        <input TYPE="checkbox" name="albumCover" id="albumCover">
                        <input id="albumCoverImage" type="hidden" name="albumCoverImage" value="default"/> 
                        </fieldset>       
            </div>            
    </body>
</html>

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Question by:cgray1223
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4 Comments
 

Author Comment

by:cgray1223
ID: 33507404
lines of interest are:

105 - 111:  form input buttons. Button with an id="upload" is the one that I attach the .click event to and launches my dialog window.  In that dialog window, I have a save button that calls the javascript form submit.

84:  javascript form submit called
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LVL 6

Expert Comment

by:Silhouette
ID: 33508993
I am not sure why the submit isn't working but you can try replacing

$("#uploadFrm").submit();  

with

$("#submit").click();

which should submit the form
0
 

Author Comment

by:cgray1223
ID: 33517879
The problem seems to be in line 6.  The isset($_POST['submit'] isn't true when I do a submit from the javascript side but it's true when I click a submit button in the browser
0
 
LVL 6

Accepted Solution

by:
Silhouette earned 500 total points
ID: 33518964
isset($_POST['submit']) checks to see if there is a value for 'submit' which only happens if you press a button with the name 'submit'.
A better options is to check
    if(isset($_FILES['image']['name']) && $_FILES['image']['name'] != ''")
This will show you if a file has been uploaded
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