Custom ELGG (1.8) Plugin Upload A Picture to Entity - php

Question

This could be a very simple thing to do, but it is proving quite hard for me to achieve.
I am in the process of creating a custom plugin for elgg to build a library of things. I want to be able to upload an image when creating a new item.
Currently in my views/default/form/cust_plugin/save.php i have
elgg_view('input/file',array('name'=>'image','value'=>$image);
And in the actions/cust_plugin/save.php i have
$cust_plugin->image = $image;
but this doesn't work.
What am I missing, what am I doing wrong?
Thanks

Answer 1

To upload an image I use "file" plugin so I can manage it very simple.
In my function I call
//Load file library
elgg_load_library('elgg:file');
//Set multipart/form-data attribute on my form
$vars = array('enctype' => 'multipart/form-data');
$body_vars = file_prepare_form_vars();
//Create Array values to return
$return = array(
'title' => elgg_echo('gallery:title:add'),
'content' => elgg_view_form('elgg-gallery/uppa', $vars,$body_vars) //My form
);
My form is:
<div>
<label for="image_upload">Image upload</label>
<?php echo elgg_view('input/file', array('name' => 'img_upload')); ?>
</div>
And my action:
if (empty($_FILES['img_upload']['name']))
{
$error = elgg_echo('file:nofile');
register_error($error);
forward(REFERER);
}
//Make a file
$file = new FilePluginFile();
$file->subtype = "file";
// if no title, grab filename
if (empty($titolo))
$titolo = htmlspecialchars($_FILES['img_upload']['name'], ENT_QUOTES, 'UTF-8');
$file->title = $titolo;
$file->description = "description file";
$file->access_id = ACCESS_PUBLIC;
$file->owner_guid = elgg_get_logged_in_user_guid();
// we have a file upload, so process it
if (isset($_FILES['img_upload']['name']) && !empty($_FILES['img_upload']['name']))
{
//Generate filename
$prefix = "file/";
$filestorename = elgg_strtolower(time().$_FILES['img_upload']['name']);
$file->setFilename($prefix . $filestorename);
//Set Mimetype
$mime_type = ElggFile::detectMimeType($_FILES['img_upload']['tmp_name'], $_FILES['img_upload']['type']);
$file->setMimeType($mime_type);
//Set attributes
$file->originalfilename = $_FILES['img_upload']['name'];
$file->simpletype = file_get_simple_type($mime_type);
// Open the file to guarantee the directory exists
$file->open("write");
$file->close();
//Move file
move_uploaded_file($_FILES['img_upload']['tmp_name'], $file->getFilenameOnFilestore());
//Save file
$guid = $file->save();
//Make thumbnails
if ($guid && $file->simpletype == "image")
{
$file->icontime = time();
$thumbnail = get_resized_image_from_existing_file($file->getFilenameOnFilestore(), 60, 60, true);
if ($thumbnail)
{
$thumb = new ElggFile();
$thumb->setMimeType($_FILES['img_upload']['type']);
$thumb->setFilename($prefix."thumb".$filestorename);
$thumb->open("write");
$thumb->write($thumbnail);
$thumb->close();
$file->thumbnail = $prefix."thumb".$filestorename;
unset($thumbnail);
}
$thumbsmall = get_resized_image_from_existing_file($file->getFilenameOnFilestore(), 153, 153, true);
if ($thumbsmall)
{
$thumb->setFilename($prefix."smallthumb".$filestorename);
$thumb->open("write");
$thumb->write($thumbsmall);
$thumb->close();
$file->smallthumb = $prefix."smallthumb".$filestorename;
unset($thumbsmall);
}
$thumblarge = get_resized_image_from_existing_file($file->getFilenameOnFilestore(), 600, 600, false);
if ($thumblarge)
{
$thumb->setFilename($prefix."largethumb".$filestorename);
$thumb->open("write");
$thumb->write($thumblarge);
$thumb->close();
$file->largethumb = $prefix."largethumb".$filestorename;
unset($thumblarge);
}
}
if ($guid)
{
$message = elgg_echo("gallery:status:upsuccess");
system_message($message);
forward($guid->getURL());
}