124 lines
4.4 KiB
PHP
124 lines
4.4 KiB
PHP
<?php
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/**
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* Name: Post Relationships
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* Author: Angus Johnston <admin@codeanimu.net>
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* License: GPLv2
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* Description: Allow posts to have relationships (parent/child).
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*/
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class Relationships extends Extension {
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public function onInitExt(InitExtEvent $event) {
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global $config, $database;
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// Create the database tables
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if ($config->get_int("ext_relationships_version") < 1){
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$database->Execute("ALTER TABLE images ADD parent_id INT NULL, ADD INDEX (parent_id);");
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$database->Execute("ALTER TABLE images ADD has_children BOOL DEFAULT FALSE NOT NULL;");
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$config->set_int("ext_relationships_version", 1);
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log_info("relationships", "extension installed");
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}
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}
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public function onImageInfoSet(ImageInfoSetEvent $event) {
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global $user;
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if(isset($_POST['tag_edit__tags']) ? !preg_match('/parent[=|:]/', $_POST["tag_edit__tags"]) : TRUE) { //Ignore tag_edit__parent if tags contain parent metatag
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if (isset($_POST["tag_edit__parent"]) ? ctype_digit($_POST["tag_edit__parent"]) : FALSE) {
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$this->set_parent($event->image->id, (int) $_POST["tag_edit__parent"]);
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}else{
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$this->remove_parent($event->image->id);
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}
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}
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}
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public function onDisplayingImage(DisplayingImageEvent $event) {
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$this->theme->relationship_info($event->image);
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}
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public function onSearchTermParse(SearchTermParseEvent $event) {
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$matches = array();
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if(preg_match("/^parent[=|:]([0-9]+|any|none)$/", $event->term, $matches)) {
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$parentID = $matches[1];
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if(preg_match("/^(any|none)$/", $parentID)){
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$not = ($parentID == "any" ? "NOT" : "");
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$event->add_querylet(new Querylet("images.parent_id IS $not NULL"));
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}else{
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$event->add_querylet(new Querylet("images.parent_id = :pid", array("pid"=>$parentID)));
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}
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}
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else if(preg_match("/^child[=|:](any|none)$/", $event->term, $matches)) {
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$not = ($matches[1] == "any" ? "=" : "!=");
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$event->add_querylet(new Querylet("images.has_children $not TRUE"));
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}
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}
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public function onTagTermParse(TagTermParseEvent $event) {
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$matches = array();
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if(preg_match("/^parent[=|:]([0-9]+|none)$/", $event->term, $matches)) {
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$parentID = $matches[1];
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if($parentID == "none" || $parentID == "0"){
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$this->remove_parent($event->id);
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}else{
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$this->set_parent($event->id, $parentID);
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}
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}
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else if(preg_match("/^child[=|:]([0-9]+)$/", $event->term, $matches)) {
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$childID = $matches[1];
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$this->set_child($event->id, $childID);
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}
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if(!empty($matches)) $event->metatag = true;
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}
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public function onImageInfoBoxBuilding(ImageInfoBoxBuildingEvent $event) {
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$event->add_part($this->theme->get_parent_editor_html($event->image), 45);
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}
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public function onImageDeletion(ImageDeletionEvent $event) {
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global $database;
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if($event->image->has_children){
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$database->execute("UPDATE images SET parent_id = NULL WHERE parent_id = :iid", array("iid"=>$event->image->id));
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}
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if($event->image->parent_id !== NULL){
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$database->execute("UPDATE images SET has_children = (SELECT * FROM (SELECT CASE WHEN (COUNT(*) - 1) > 0 THEN 1 ELSE 0 END FROM images WHERE parent_id = :pid) AS sub)
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WHERE id = :pid", array("pid"=>$event->image->parent_id));
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}
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}
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private function set_parent(/*int*/ $imageID, /*int*/ $parentID){
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global $database;
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if($database->get_row("SELECT 1 FROM images WHERE id = :pid", array("pid"=>$parentID))){
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$database->execute("UPDATE images SET parent_id = :pid WHERE id = :iid", array("pid"=>$parentID, "iid"=>$imageID));
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$database->execute("UPDATE images SET has_children = TRUE WHERE id = :pid", array("pid"=>$parentID));
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}
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}
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private function set_child(/*int*/ $parentID, /*int*/ $childID){
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global $database;
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if($database->get_row("SELECT 1 FROM images WHERE id = :cid", array("cid"=>$childID))){
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$database->execute("UPDATE images SET parent_id = :pid WHERE id = :cid", array("cid"=>$childID, "pid"=>$parentID));
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$database->execute("UPDATE images SET has_children = TRUE WHERE id = :pid", array("pid"=>$parentID));
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}
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}
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private function remove_parent(/*int*/ $imageID){
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global $database;
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$parentID = $database->get_one("SELECT parent_id FROM images WHERE id = :iid", array("iid"=>$imageID));
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if($parentID){
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$database->execute("UPDATE images SET parent_id = NULL WHERE id = :iid", array("iid"=>$imageID));
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$database->execute("UPDATE images SET has_children = (SELECT * FROM (SELECT CASE WHEN COUNT(*) > 0 THEN 1 ELSE 0 END FROM images WHERE parent_id = :pid) AS sub)
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WHERE id = :pid", array("pid"=>$parentID));
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}
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}
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}
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?>
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