Moodle Filemanager draft image visible only to me - php

Question

I have been making a plugin which allows admins to upload image, i can see the image(so can other people which is expected), delete and re-upload, but the problem is when another admin try to edit the plugin, they cant see the draft image, they only see the image they upload and i see the image i upload as draft. What i want is if i upload an image everyone that tries to edit, they should see the image i have upload as draft.
I will add my code below, if someone can help i will really appreciate it.
view.php:
$i = 1;
$out = array();
$fs = get_file_storage();
$files = $fs->get_area_files($this->context->id, 'block_cls_user_profile', 'cls_img', $i, false, false);
foreach ($files as $file) {
$filename = $file->get_filename();
$url = moodle_url::make_pluginfile_url(
$file->get_contextid(),
$file->get_component(),
$file->get_filearea(),
$file->get_itemid(),
$file->get_filepath(),
$filename);
// $out[] = html_writer::link($url, $filename);
}
// $br = html_writer::empty_tag('br');
lib.php
// Check the contextlevel is as expected - if your plugin is a block, this becomes CONTEXT_BLOCK, etc.
if ($context->contextlevel != CONTEXT_BLOCK) {
return false;
}
// Make sure the filearea is one of those used by the plugin.
if ($filearea !== 'cls_img') {
return false;
}
// $fs = get_file_storage();
// $file = $fs->get_file($context->id, 'local_myplugin', $filearea, $args[0], '/', $args[1]);
// send_stored_file($file);
// Make sure the user is logged in and has access to the module (plugins that are not course modules should leave out the 'cm' part).
require_login($course, true);
// No check for capability, because everybody needs to see it
// Check the relevant capabilities - these may vary depending on the filearea being accessed.
/*
if (!has_capability('mod/bookcase:addinstance', $context)) {
return false;
}
*/
// Leave this line out if you set the itemid to null in make_pluginfile_url (set $itemid to 0 instead).
$itemid = array_shift($args); // The first item in the $args array.
// Use the itemid to retrieve any relevant data records and perform any security checks to see if the
// user really does have access to the file in question.
// Extract the filename / filepath from the $args array.
$filename = array_pop($args); // The last item in the $args array.
if (!$args) {
$filepath = '/'; // $args is empty => the path is '/'
} else {
$filepath = '/'.implode('/', $args).'/'; // $args contains elements of the filepath
}
// Retrieve the file from the Files API.
$fs = get_file_storage();
$file = $fs->get_file($context->id, 'block_cls_user_profile', $filearea, $itemid, $filepath, $filename);
if (!$file) {
return false; // The file does not exist.
}
// We can now send the file back to the browser - in this case with a cache lifetime of 1 day and no filtering.
// From Moodle 2.3, use send_stored_file instead.
send_stored_file($file, 86400, 0, $forcedownload, $options);
edit_form.php
$mform->addElement('filemanager', 'config_profile_image', get_string('file'), null,
array('maxbytes' => $CFG->maxbytes, 'areamaxbytes' => 10485760, 'maxfiles' => 1,
'accepted_types' => '*', 'return_types'=> FILE_INTERNAL | FILE_EXTERNAL));
$i = 1;
if ($draftitemid = file_get_submitted_draft_itemid('config_profile_image')) {
file_save_draft_area_files($draftitemid, $this->block->context->id, 'block_cls_user_profile', 'cls_img', $i,array('subdirs' => false, 'maxfiles' => 1));
}
I have edited the edit_form.php and now it looks like this:
global $CFG, $mform;
$i = 0;
$draftitemid = file_get_submitted_draft_itemid('config_profile_image');
file_prepare_draft_area($draftitemid, $this->block->context->id, 'block_cls_user_profile', 'cls_img', $i,
array('subdirs' => 0, 'maxbytes' => $CFG->maxbytes, 'maxfiles' => 1));
$entry->config_profile_image = $draftitemid;
$mform->set_data($entry);
file_save_draft_area_files($draftitemid, $this->block->context->id, 'block_cls_user_profile', 'cls_img', $i,array('subdirs' => false, 'maxfiles' => 1));
parent::set_data($defaults);}}
But the error i get now is 'Call to a member function set_data() on null'.
Thank you.