want to get a validation script to validate the file upload box onsubmit.
check the extension of the file and validate accordingly to the extension of file loaded
Add a comment
|
3 Answers
Check here: http://jsfiddle.net/uh2Gn/
HTML:
<form method="post" enctype="" onsubmit="return validate()">
<input type="file" id="file" />
<input type="submit" />
</form>
JavaScript:
function validate() {
var filename=document.getElementById('file').value;
var extension=filename.substr(filename.lastIndexOf('.')+1).toLowerCase();
//alert(extension);
if(extension=='jpg' || extension=='gif') {
return true;
} else {
alert('Not Allowed Extension!');
return false;
}
}
Keep in mind that this is only for user convenience, that he doesn't go theu a long submit process to get an error at the server, cuz for sure you must implement a check at server-side.
Comments
If you don't mind jquery, then you can use the validation plugin, which is available here. A brief introduction and small demo is available here.
1 Comment
Rahul TS
sorry, most of my form <input> is done validated wih javascript..the only remaining part is the file upload box..no worries...thanks for you answers, I would rather try use it for my another module
I use the following in my php script for validation.
$status_file = validate_and_upload("project_file");
function validate_and_upload($input_tag_name)
{
$allowedExts = array("gif", "jpeg", "jpg", "png", "ppt", "doc", "pdf", "xls", "xlxs", "txt", "docx");
$filename = $_FILES[$input_tag_name]['name'];
if ( !$filename )
return 0;
$extension = pathinfo($filename, PATHINFO_EXTENSION);
if ( ($_FILES[$input_tag_name]["size"] < 33554432) && in_array($extension, $allowedExts) ) // 33554432 is 32.00 MB
{
if ($_FILES[$input_tag_name]["error"] > 0)
{
echo "Return Code: " . $_FILES[$input_tag_name]["error"] . "<br>";
return -1;
}
else
{
if (file_exists("/sites/default/files/private/" . $_FILES[$input_tag_name]["name"]))
{
echo $_FILES[$input_tag_name]["name"] . " already exists. ";
return 2;
}
else
{
$hard_disk_upload_directory = "C://xampp/htdocs/mywebsite/sites/default/files/private/";
if (move_uploaded_file($_FILES[$input_tag_name]["tmp_name"], $hard_disk_upload_directory . $_FILES[$input_tag_name]["name"]))
return 1;
else
return -1;
}
}
}
else
{
echo "<script>alert('Invalid file'); window.location.href='http://mywebsite/home';</script>";
return -1;
}
}
