我需要通过 Web服务将文件上传到moodle的论坛，我一直在搜索，我发现存在一个名为core_files_upload()的WS。我查看了这个WS的代码，这个WS的上下文级别只是（ block，course，coursecat，system，user或module ），上下文论坛不存在，这个WS是{{1 }}。
我还发现在Moodle 3.0中有两个与论坛相关的新WS，它们是 mod_forum_add_discussion 和 mod_forum_add_discussion_post 但是我也查看了代码并且他们没有＆＃39 ; t允许上传。
然后我决定最好的解决方案是创建一个新的解决方案，但我不太了解在 Moodle 中上传文件并且找不到更多信息。我对Moodle中WS的结构有点熟悉，因为我已经制作了2个非常简单的WS，但我不知道如何做到这一点。
如果有人知道该怎么做或有任何可能有用的示例或文档，那将会有所帮助。
提前致谢。
答案 0 :(得分：2)
您可以查找文件
/webservice/upload.php
this file is for uploading files
$params = array('token'=>$token, 'filepath' => $filepath
, 'filearea'=>'draft') + $_FILES ;
$serverurl = <domainname>. '/webservice/upload.php'. '?token=' . $token;
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_VERBOSE, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible;)");
curl_setopt($ch, CURLOPT_URL, $serverurl);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
$response = curl_exec($ch);
或者这个代码可以帮助你，它将在moodle数据中创建一个文件并从临时文件中记录在文件表中。
$fs = get_file_storage();
$target_path = <target-path>;
$context = get_context_instance(CONTEXT_USER, $userID, MUST_EXIST);
$cm = get_coursemodule_from_instance('forum', $forum->id);
$modcontext = context_module::instance($cm->id, MUST_EXIST);
//saving in draft
$item = rand();
$file_record = array('contextid'=>$context->id, 'component'=>'user', 'filearea'=>'draft', 'itemid'=>$item,
'filepath'=>"/", 'filename'=><filename>, 'userid'=>$userID);
$fs->create_file_from_pathname($file_record, $CFG->dirroot."/".$target_path.<filename>);
// saving for post
$file_record = array('contextid'=>$modcontext->id, 'component'=>'mod_forum', 'filearea'=>'post', 'itemid'=>$post->id,
'filepath'=>"/", 'filename'=><filename>, 'userid'=>$userID);
$fs->create_file_from_pathname($file_record, $CFG->dirroot."/".$target_path.$imagefileEnc);
答案 1 :(得分：2)
应@insightful的要求，我将发布我的代码，我希望这有助于某人
首先是WS的externallib.php
<强> externallib.php
require_once($CFG->libdir . "/externallib.php");
require_once($CFG->libdir . "/filelib.php");
class local_upload_tfg_external extends external_api {
/**
* Returns description of method parameters
* @return external_function_parameters
*/
public static function upload_tfg_parameters() {
return new external_function_parameters(
array('community_key' => new external_value(PARAM_TEXT, 'Comunidad a la que se subira el TFG o TFM.', VALUE_REQUIRED, '', NULL_NOT_ALLOWED),
'username' => new external_value(PARAM_TEXT, 'Usuario que sube el archivo.', VALUE_REQUIRED, '', NULL_NOT_ALLOWED),
'folder_name' => new external_value(PARAM_TEXT, 'Directorio donde se subira el archivo.', VALUE_REQUIRED, '', NULL_NOT_ALLOWED))
);
}
public static function upload_tfg($community_key, $username, $folder_name) {
global $CFG, $DB, $USER;
require_once($CFG->dirroot . "/mod/forum/lib.php");
$params = self::validate_parameters(self::upload_tfg_parameters(),
array(
'community_key' => $community_key,
'username' => $username,
'folder_name' => $folder_name
));
//Context validation
//OPTIONAL but in most web service it should present
$contextoUser = get_context_instance(CONTEXT_USER, $USER->id);
self::validate_context($contextoUser);
$fs = get_file_storage();
$warnings = array();
//We get the course to which the file must be uploaded
$sql = "SELECT id FROM mdl_course WHERE idnumber = ?";
$result = $DB->get_records_sql($sql, array($community_key));
foreach ( $result as $n ) {
$courseid = $n->id;
}
if( is_null($courseid)){
throw new moodle_exception('no_course','No existe el curso');
}
//e get the forum to upload the file
$sql = "SELECT f.id FROM mdl_forum f , mdl_course c WHERE c.idnumber = ? AND c.id = f.course AND f.name = ?";
$result = $DB->get_records_sql($sql, array($community_key, $folder_name));
foreach ( $result as $n ) {
$forumid = $n->id;
}
if( is_null($forumid)){
throw new moodle_exception('no_forum','No existe el foro');
}
//We get the user who wants to upload the file
$sql = "SELECT id FROM mdl_user WHERE username = ?";
$result = $DB->get_records_sql($sql, array($username));
foreach ( $result as $n ) {
$userid = $n->id;
}
if( is_null($userid)){
throw new moodle_exception('no_user','No existe el usuario');
}
//We check if the user belongs to the course
$contextCourse = context_course::instance($courseid);
$enrolled = is_enrolled($contextCourse, $userid, '', true);
if( !$enrolled){
throw new moodle_exception('user_no_enrolled','El usuario no está en el curso');
}
//Files received
$numFiles = count($_FILES);
if($numFiles > 0){
// Request and permission validation.
$forum = $DB->get_record('forum', array('id' => $forumid), '*', MUST_EXIST);
list($course, $cm) = get_course_and_cm_from_instance($forum, 'forum');
$context = context_module::instance($cm->id);
self::validate_context($context);
// Normalize group.
if (!groups_get_activity_groupmode($cm)) {
// Groups not supported, force to -1.
$groupid = -1;
} else {
// Check if we receive the default or and empty value for groupid,
// in this case, get the group for the user in the activity.
if ($groupid === -1 ) {
$groupid = groups_get_activity_group($cm);
} else{
$groupid = -1;
}
}
if (!forum_user_can_post_discussion($forum, $groupid, -1, $cm, $context)) {
throw new moodle_exception('cannotcreatediscussion', 'forum');
}
$thresholdwarning = forum_check_throttling($forum, $cm);
forum_check_blocking_threshold($thresholdwarning);
foreach ($_FILES as $fieldname=>$uploaded_file) {
// check upload errors
if (!empty($_FILES[$fieldname]['error'])) {
switch ($_FILES[$fieldname]['error']) {
case UPLOAD_ERR_INI_SIZE:
throw new moodle_exception('upload_error_ini_size', 'repository_upload');
break;
case UPLOAD_ERR_FORM_SIZE:
throw new moodle_exception('upload_error_form_size', 'repository_upload');
break;
case UPLOAD_ERR_PARTIAL:
throw new moodle_exception('upload_error_partial', 'repository_upload');
break;
case UPLOAD_ERR_NO_FILE:
throw new moodle_exception('upload_error_no_file', 'repository_upload');
break;
case UPLOAD_ERR_NO_TMP_DIR:
throw new moodle_exception('upload_error_no_tmp_dir', 'repository_upload');
break;
case UPLOAD_ERR_CANT_WRITE:
throw new moodle_exception('upload_error_cant_write', 'repository_upload');
break;
case UPLOAD_ERR_EXTENSION:
throw new moodle_exception('upload_error_extension', 'repository_upload');
break;
default:
throw new moodle_exception('nofile');
}
}
/*$file = new stdClass();
$file->filename = clean_param($_FILES[$fieldname]['name'], PARAM_FILE);
// check system maxbytes setting
if (($_FILES[$fieldname]['size'] > get_max_upload_file_size($CFG->maxbytes))) {
// oversize file will be ignored, error added to array to notify web service client
$file->errortype = 'fileoversized';
$file->error = get_string('maxbytes', 'error');
} else {
$file->filepath = $_FILES[$fieldname]['tmp_name'];
// calculate total size of upload
//$totalsize += $_FILES[$fieldname]['size'];
}
$files[] = $file;*/
$filename = $_FILES[$fieldname]['name'];
$filepath = $_FILES[$fieldname]['tmp_name'];
// Create the discussion.
$discussion = new stdClass();
$discussion->course = $course->id;
$discussion->forum = $forum->id;
$discussion->message = "<p>".$filename."</p>";
$discussion->messageformat = FORMAT_HTML; // Force formatting for now.
$discussion->messagetrust = trusttext_trusted($context);
$discussion->itemid = 0;
$discussion->groupid = $groupid;
$discussion->mailnow = 0;
$discussion->subject = $filename;
$discussion->name = $discussion->subject;
$discussion->timestart = 0;
$discussion->timeend = 0;
if ($discussionid = forum_add_discussion($discussion)) {
$discussion->id = $discussionid;
//We update the user of the discursion to the one of the user received
$sql = "UPDATE mdl_forum_discussions SET userid= ? WHERE id = ?";
$DB->execute($sql, array($userid, $discussionid));
/*
// Trigger events and completion.
$params = array(
'context' => $context,
'objectid' => $discussion->id,
'other' => array(
'forumid' => $forum->id,
)
);
$event = \mod_forum\event\discussion_created::create($params);
$event->add_record_snapshot('forum_discussions', $discussion);
$event->trigger();
$completion = new completion_info($course);
if ($completion->is_enabled($cm) && ($forum->completiondiscussions || $forum->completionposts)) {
$completion->update_state($cm, COMPLETION_COMPLETE);
}
$settings = new stdClass();
$settings->discussionsubscribe = false; //discussionsubscribe (bool); subscribe to the discussion?, default to true
forum_post_subscription($settings, $forum, $discussion
//se guardara el fichero
// Get any existing file size limits.
//$maxareabytes = FILE_AREA_MAX_BYTES_UNLIMITED;
//$maxupload = get_user_max_upload_file_size($context, $CFG->maxbytes);
// Check the size of this upload.
//if ($maxupload !== USER_CAN_IGNORE_FILE_SIZE_LIMITS && $totalsize > $maxupload) {
// throw new file_exception('userquotalimit');
//}
*/
//We get the course to which the file must be uploaded
$sql = "SELECT id FROM mdl_forum_posts WHERE discussion = ? ORDER BY id ASC LIMIT 1";
$result = $DB->get_records_sql($sql, array($discussionid));
foreach ( $result as $n ) {
$postid = $n->id;
}
if( is_null($postid)){
throw new moodle_exception('no_post','No existe el post');
}
//We update the post to put the user that they send us and indicate that they have a file
$sql = "UPDATE mdl_forum_posts SET userid= ?, attachment= 1 WHERE id = ?";
$DB->execute($sql, array($userid, $postid));
$user = $DB->get_record('user', array('id'=>$userid), '*', MUST_EXIST);
$file_record = new stdClass;
$file_record->component = 'mod_forum';
$file_record->contextid = $context->id;
$file_record->userid = $userid;
$file_record->filearea = 'attachment';
$file_record->filename = $filename;
$file_record->filepath = '/';
$file_record->itemid = $postid;
$file_record->license = $CFG->sitedefaultlicense;
$file_record->author = fullname($user);
$file_record->source = $filename;
//Check if the file already exist
$existingfile = $fs->file_exists($file_record->contextid, $file_record->component, $file_record->filearea,
$file_record->itemid, $file_record->filepath, $file_record->filename);
if ($existingfile) {
throw new file_exception('filenameexist');
} else {
$stored_file = $fs->create_file_from_pathname($file_record, $filepath);
}
} else {
throw new moodle_exception('couldnotadd', 'forum');
}
}
}else{
throw new moodle_exception('nofile');
}
$result = array();
$result['discussionid'] = $discussionid;
$result['warnings'] = $warnings;
return $result;
}
/**
* Returns description of method result value
* @return external_multiple_structure
*/
public static function upload_tfg_returns() {
return new external_single_structure(
array(
'discussionid' => new external_value(PARAM_INT, 'New Discussion ID'),
'warnings' => new external_warnings()
)
);
}
}
示例来调用此WS可能是这样的：
$target_url = "http://localhost/pruebaMoodle/webservice/rest/server.php";
//$target_url = "http://localhost/upload.php";
$username = "raula"; //User uploading the file (must belong to the course)
$community_key = "c15c033a43976gPT"; //custom identifier of course
$folder_name = "Course 2016"; //Name of the forum to which the file will be uploaded
$fname = 'Prueba.txt'; //Name of the file or path where it is located but is in the same directory as this file
$token = "28b054f102a75a0eab2a0053fd930d62"; //token created for ws
$file_name_with_full_path = realpath($fname);
$cfile = new CURLFile($file_name_with_full_path);
$post = array (
'username' => $username,
'community_key' => $community_key,
'folder_name' => $folder_name,
'wstoken' => $token,
'wsfunction' => 'upload_tfg_tfm',
'moodlewsrestformat' => 'json',
'upload_file' => $cfile
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible;)");
curl_setopt($ch, CURLOPT_HTTPHEADER,array('User-Agent: Opera/9.80 (Windows NT 6.2; Win64; x64) Presto/2.12.388 Version/12.15','Referer: http://localhost','Content-Type: multipart/form-data'));
curl_setopt($ch, CURLOPT_FRESH_CONNECT, 1);
curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
$result = curl_exec ($ch);
if ($result === FALSE) {
echo "Error sending " . $fname . " " . curl_error($ch) . "\n";
curl_close ($ch);
}else{
curl_close ($ch);
echo "<br><br>Result: " . $result. "<br>";
}
我希望这可以为你服务