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444 lines
18 KiB
PHP
444 lines
18 KiB
PHP
<?PHP //$Id$
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//This php script contains all the stuff to backup/restore
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//forum mods
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//This is the "graphical" structure of the forum mod:
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//
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// forum
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// (CL,pk->id)
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// |
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// -----------------------------------
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// | |
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// subscriptions forum_discussions
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// (UL,pk->id, fk->forum) (UL,pk->id, fk->forum)
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// |
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// |
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// |
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// forum_posts
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// (UL,pk->id,fk->discussion,nt->parent,files)
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// |
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// |
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// |
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// forum_ratings
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// (UL,pk->id,fk->post)
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//
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// Meaning: pk->primary key field of the table
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// fk->foreign key to link with parent
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// nt->nested field (recursive data)
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// CL->course level info
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// UL->user level info
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// files->table may have files)
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//
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//-----------------------------------------------------------
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function forum_restore_mods($mod,$restore) {
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global $CFG,$db;
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$status = true;
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//Get record from backup_ids
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$data = backup_getid($restore->backup_unique_code,$mod->modtype,$mod->id);
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if ($data) {
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//Now get completed xmlized object
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$info = $data->info;
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//traverse_xmlize($info); //Debug
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//print_object ($GLOBALS['traverse_array']); //Debug
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//$GLOBALS['traverse_array']=""; //Debug
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//Now, build the FORUM record structure
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$forum->course = $restore->course_id;
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$forum->type = backup_todb($info['MOD']['#']['TYPE']['0']['#']);
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$forum->name = backup_todb($info['MOD']['#']['NAME']['0']['#']);
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$forum->intro = backup_todb($info['MOD']['#']['INTRO']['0']['#']);
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$forum->open = backup_todb($info['MOD']['#']['OPEN']['0']['#']);
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$forum->assessed = backup_todb($info['MOD']['#']['ASSESSED']['0']['#']);
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$forum->assesstimestart = backup_todb($info['MOD']['#']['ASSESSTIMESTART']['0']['#']);
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$forum->assesstimefinish = backup_todb($info['MOD']['#']['ASSESSTIMEFINISH']['0']['#']);
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$forum->maxbytes = backup_todb($info['MOD']['#']['MAXBYTES']['0']['#']);
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$forum->scale = backup_todb($info['MOD']['#']['SCALE']['0']['#']);
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$forum->forcesubscribe = backup_todb($info['MOD']['#']['FORCESUBSCRIBE']['0']['#']);
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$forum->timemodified = backup_todb($info['MOD']['#']['TIMEMODIFIED']['0']['#']);
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//We have to recode the scale field if it's <0 (positive is a grade, not a scale)
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if ($forum->scale < 0) {
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$scale = backup_getid($restore->backup_unique_code,"scale",abs($forum->scale));
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if ($scale) {
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$forum->scale = -($scale->new_id);
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}
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}
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//The structure is equal to the db, so insert the forum
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$newid = insert_record ("forum",$forum);
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//Do some output
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echo "<ul><li>".get_string("modulename","forum")." \"".$forum->name."\"<br>";
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backup_flush(300);
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if ($newid) {
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//We have the newid, update backup_ids
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backup_putid($restore->backup_unique_code,$mod->modtype,
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$mod->id, $newid);
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//Now check if want to restore user data and do it.
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if ($restore->mods['forum']->userinfo) {
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//Restore forum_subscriptions
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$status = forum_subscriptions_restore_mods ($newid,$info,$restore);
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if ($status) {
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//Restore forum_discussions
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$status = forum_discussions_restore_mods ($newid,$info,$restore);
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}
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}
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} else {
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$status = false;
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}
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//Finalize ul
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echo "</ul>";
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} else {
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$status = false;
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}
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return $status;
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}
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//This function restores the forum_subscriptions
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function forum_subscriptions_restore_mods($forum_id,$info,$restore) {
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global $CFG;
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$status = true;
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//Get the discussions array
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$subscriptions = $info['MOD']['#']['SUBSCRIPTIONS']['0']['#']['SUBSCRIPTION'];
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//Iterate over subscriptions
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for($i = 0; $i < sizeof($subscriptions); $i++) {
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$sus_info = $subscriptions[$i];
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//traverse_xmlize($sus_info); //Debug
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//print_object ($GLOBALS['traverse_array']); //Debug
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//$GLOBALS['traverse_array']=""; //Debug
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//We'll need this later!!
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$oldid = backup_todb($sus_info['#']['ID']['0']['#']);
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$olduserid = backup_todb($sus_info['#']['USERID']['0']['#']);
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//Now, build the FORUM_SUBSCRIPTIONS record structure
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$subscription->forum = $forum_id;
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$subscription->userid = backup_todb($sus_info['#']['USERID']['0']['#']);
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//We have to recode the userid field
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$user = backup_getid($restore->backup_unique_code,"user",$subscription->userid);
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if ($user) {
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$subscription->userid = $user->new_id;
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}
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//The structure is equal to the db, so insert the forum_subscription
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$newid = insert_record ("forum_subscriptions",$subscription);
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//Do some output
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if (($i+1) % 50 == 0) {
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echo ".";
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if (($i+1) % 1000 == 0) {
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echo "<br>";
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}
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backup_flush(300);
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}
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if ($newid) {
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//We have the newid, update backup_ids
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backup_putid($restore->backup_unique_code,"forum_subscriptions",$oldid,
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$newid);
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} else {
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$status = false;
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}
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}
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return $status;
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}
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//This function restores the forum_discussions
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function forum_discussions_restore_mods($forum_id,$info,$restore) {
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global $CFG;
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$status = true;
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//Get the discussions array
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$discussions = $info['MOD']['#']['DISCUSSIONS']['0']['#']['DISCUSSION'];
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//Iterate over discussions
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for($i = 0; $i < sizeof($discussions); $i++) {
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$dis_info = $discussions[$i];
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//traverse_xmlize($dis_info); //Debug
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//print_object ($GLOBALS['traverse_array']); //Debug
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//$GLOBALS['traverse_array']=""; //Debug
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//We'll need this later!!
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$oldid = backup_todb($dis_info['#']['ID']['0']['#']);
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$olduserid = backup_todb($dis_info['#']['USERID']['0']['#']);
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//Now, build the FORUM_DISCUSSIONS record structure
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$discussion->forum = $forum_id;
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$discussion->course = $restore->course_id;
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$discussion->name = backup_todb($dis_info['#']['NAME']['0']['#']);
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$discussion->firstpost = backup_todb($dis_info['#']['FIRSTPOST']['0']['#']);
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$discussion->assessed = backup_todb($dis_info['#']['ASSESSED']['0']['#']);
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$discussion->timemodified = backup_todb($dis_info['#']['TIMEMODIFIED']['0']['#']);
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//The structure is equal to the db, so insert the forum_discussions
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$newid = insert_record ("forum_discussions",$discussion);
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//Do some output
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if (($i+1) % 50 == 0) {
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echo ".";
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if (($i+1) % 1000 == 0) {
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echo "<br>";
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}
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backup_flush(300);
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}
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if ($newid) {
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//We have the newid, update backup_ids
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backup_putid($restore->backup_unique_code,"forum_discussions",$oldid,
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$newid);
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//Restore forum_posts
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$status = forum_posts_restore_mods ($forum_id,$newid,$dis_info,$restore);
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//Now recalculate firstpost field
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$old_firstpost = $discussion->firstpost;
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//Get its new post_id from backup_ids table
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$rec = backup_getid($restore->backup_unique_code,"forum_posts",$old_firstpost);
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if ($rec) {
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//Put its new firstpost
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$discussion->firstpost = $rec->new_id;
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} else {
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$discussion->firstpost = 0;
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}
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//Create temp discussion record
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$temp_discussion->id = $newid;
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$temp_discussion->firstpost = $discussion->firstpost;
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//Update discussion (only firstpost will be changed)
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$status = update_record("forum_discussions",$temp_discussion);
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//echo "Updated firstpost ".$old_firstpost." to ".$temp_discussion->firstpost."<br>"; //Debug
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} else {
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$status = false;
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}
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}
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return $status;
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}
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//This function restores the forum_posts
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function forum_posts_restore_mods($new_forum_id,$discussion_id,$info,$restore) {
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global $CFG;
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$status = true;
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//Get the posts array
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$posts = $info['#']['POSTS']['0']['#']['POST'];
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//Iterate over posts
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for($i = 0; $i < sizeof($posts); $i++) {
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$pos_info = $posts[$i];
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//traverse_xmlize($pos_info); //Debug
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//print_object ($GLOBALS['traverse_array']); //Debug
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//$GLOBALS['traverse_array']=""; //Debug
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//We'll need this later!!
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$oldid = backup_todb($pos_info['#']['ID']['0']['#']);
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$olduserid = backup_todb($pos_info['#']['USERID']['0']['#']);
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//Now, build the FORUM_POSTS record structure
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$post->discussion = $discussion_id;
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$post->parent = backup_todb($pos_info['#']['PARENT']['0']['#']);
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$post->userid = backup_todb($pos_info['#']['USERID']['0']['#']);
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$post->created = backup_todb($pos_info['#']['CREATED']['0']['#']);
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$post->modified = backup_todb($pos_info['#']['MODIFIED']['0']['#']);
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$post->mailed = backup_todb($pos_info['#']['MAILED']['0']['#']);
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$post->subject = backup_todb($pos_info['#']['SUBJECT']['0']['#']);
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$post->message = backup_todb($pos_info['#']['MESSAGE']['0']['#']);
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$post->format = backup_todb($pos_info['#']['FORMAT']['0']['#']);
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$post->attachment = backup_todb($pos_info['#']['ATTACHMENT']['0']['#']);
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$post->totalscore = backup_todb($pos_info['#']['TOTALSCORE']['0']['#']);
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//We have to recode the userid field
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$user = backup_getid($restore->backup_unique_code,"user",$post->userid);
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if ($user) {
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$post->userid = $user->new_id;
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}
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//The structure is equal to the db, so insert the forum_posts
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$newid = insert_record ("forum_posts",$post);
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//Do some output
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if (($i+1) % 50 == 0) {
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echo ".";
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if (($i+1) % 1000 == 0) {
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echo "<br>";
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}
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backup_flush(300);
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}
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if ($newid) {
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//We have the newid, update backup_ids
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backup_putid($restore->backup_unique_code,"forum_posts",$oldid,
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$newid);
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//Get old forum id from backup_ids
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$rec = get_record("backup_ids","backup_code",$restore->backup_unique_code,
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"table_name","forum",
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"new_id",$new_forum_id);
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//Now copy moddata associated files
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$status = forum_restore_files ($rec->old_id, $new_forum_id,
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$oldid, $newid, $restore);
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//Now restore post ratings
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$status = forum_ratings_restore_mods($newid,$pos_info,$restore);
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} else {
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$status = false;
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}
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}
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//Now we get every post in this discussion_id and recalculate its parent post
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$posts = get_records ("forum_posts","discussion",$discussion_id);
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if ($posts) {
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//Iterate over each post
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foreach ($posts as $post) {
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//Get its parent
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$old_parent = $post->parent;
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//Get its new post_id from backup_ids table
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$rec = backup_getid($restore->backup_unique_code,"forum_posts",$old_parent);
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if ($rec) {
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//Put its new parent
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$post->parent = $rec->new_id;
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} else {
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$post->parent = 0;
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}
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//Create temp post record
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$temp_post->id = $post->id;
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$temp_post->parent = $post->parent;
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//echo "Updated parent ".$old_parent." to ".$temp_post->parent."<br>"; //Debug
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//Update post (only parent will be changed)
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$status = update_record("forum_posts",$temp_post);
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}
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}
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return $status;
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}
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//This function copies the forum related info from backup temp dir to course moddata folder,
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//creating it if needed and recoding everything (forum id and post id)
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function forum_restore_files ($oldforid, $newforid, $oldpostid, $newpostid, $restore) {
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global $CFG;
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$status = true;
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$todo = false;
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$moddata_path = "";
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$forum_path = "";
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$temp_path = "";
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//First, we check to "course_id" exists and create is as necessary
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//in CFG->dataroot
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$dest_dir = $CFG->dataroot."/".$restore->course_id;
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$status = check_dir_exists($dest_dir,true);
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//First, locate course's moddata directory
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$moddata_path = $CFG->dataroot."/".$restore->course_id."/".$CFG->moddata;
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//Check it exists and create it
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$status = check_dir_exists($moddata_path,true);
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//Now, locate forum directory
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if ($status) {
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$forum_path = $moddata_path."/forum";
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//Check it exists and create it
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$status = check_dir_exists($forum_path,true);
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}
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//Now locate the temp dir we are restoring from
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if ($status) {
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$temp_path = $CFG->dataroot."/temp/backup/".$restore->backup_unique_code.
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"/moddata/forum/".$oldforid."/".$oldpostid;
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//Check it exists
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if (is_dir($temp_path)) {
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$todo = true;
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}
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}
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//If todo, we create the neccesary dirs in course moddata/forum
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if ($status and $todo) {
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//First this forum id
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$this_forum_path = $forum_path."/".$newforid;
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$status = check_dir_exists($this_forum_path,true);
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//Now this post id
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$post_forum_path = $this_forum_path."/".$newpostid;
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//And now, copy temp_path to post_forum_path
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$status = backup_copy_file($temp_path, $post_forum_path);
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}
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return $status;
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}
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//This function restores the forum_ratings
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function forum_ratings_restore_mods($new_post_id,$info,$restore) {
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global $CFG;
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$status = true;
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//Get the ratings array
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$ratings = $info['#']['RATINGS']['0']['#']['RATING'];
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//Iterate over ratings
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for($i = 0; $i < sizeof($ratings); $i++) {
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$rat_info = $ratings[$i];
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//traverse_xmlize($rat_info); //Debug
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//print_object ($GLOBALS['traverse_array']); //Debug
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//$GLOBALS['traverse_array']=""; //Debug
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//We'll need this later!!
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$oldid = backup_todb($rat_info['#']['ID']['0']['#']);
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$olduserid = backup_todb($rat_info['#']['USERID']['0']['#']);
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//Now, build the FORM_RATINGS record structure
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$rating->post = $new_post_id;
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$rating->userid = backup_todb($rat_info['#']['USERID']['0']['#']);
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$rating->time = backup_todb($rat_info['#']['TIME']['0']['#']);
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$rating->rating = backup_todb($rat_info['#']['POST_RATING']['0']['#']);
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//We have to recode the userid field
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$user = backup_getid($restore->backup_unique_code,"user",$rating->userid);
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if ($user) {
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$rating->userid = $user->new_id;
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}
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//The structure is equal to the db, so insert the forum_ratings
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$newid = insert_record ("forum_ratings",$rating);
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//Do some output
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if (($i+1) % 50 == 0) {
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echo ".";
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if (($i+1) % 1000 == 0) {
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echo "<br>";
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}
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backup_flush(300);
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}
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if ($newid) {
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//We have the newid, update backup_ids
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backup_putid($restore->backup_unique_code,"forum_ratings",$oldid,
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$newid);
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} else {
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$status = false;
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}
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}
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return $status;
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}
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?>
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