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-rw-r--r--engine/lib/relationships.php163
1 files changed, 113 insertions, 50 deletions
diff --git a/engine/lib/relationships.php b/engine/lib/relationships.php
index ba6f0182f..0d21793a3 100644
--- a/engine/lib/relationships.php
+++ b/engine/lib/relationships.php
@@ -363,35 +363,35 @@
$guid_two = (int)$guid_two;
return delete_data("DELETE from {$CONFIG->dbprefix}entity_relationships where guid_one=$guid_one and relationship='$relationship' and guid_two=$guid_two");
- }
-
- /**
- * Removes all arbitrary relationships originating from a particular entity
- *
- * @param int $guid_one The GUID of the entity
- * @param string $relationship The name of the relationship (optionally)
- * @param true|false $inverse Whether we're deleting inverse relationships (default false)
- * @return true|false Depending on success
- */
- function remove_entity_relationships($guid_one, $relationship = "", $inverse = false) {
-
- global $CONFIG;
-
- $guid_one = (int) $guid_one;
-
- if (!empty($relationship)) {
- $relationship = sanitise_string($relationship);
- $where = "and relationship='$relationship'";
- } else {
- $where = "";
- }
-
- if (!$inverse) {
- return delete_data("DELETE from {$CONFIG->dbprefix}entity_relationships where guid_one=$guid_one {$where}");
- } else {
- return delete_data("DELETE from {$CONFIG->dbprefix}entity_relationships where guid_two=$guid_one {$where}");
- }
-
+ }
+
+ /**
+ * Removes all arbitrary relationships originating from a particular entity
+ *
+ * @param int $guid_one The GUID of the entity
+ * @param string $relationship The name of the relationship (optionally)
+ * @param true|false $inverse Whether we're deleting inverse relationships (default false)
+ * @return true|false Depending on success
+ */
+ function remove_entity_relationships($guid_one, $relationship = "", $inverse = false) {
+
+ global $CONFIG;
+
+ $guid_one = (int) $guid_one;
+
+ if (!empty($relationship)) {
+ $relationship = sanitise_string($relationship);
+ $where = "and relationship='$relationship'";
+ } else {
+ $where = "";
+ }
+
+ if (!$inverse) {
+ return delete_data("DELETE from {$CONFIG->dbprefix}entity_relationships where guid_one=$guid_one {$where}");
+ } else {
+ return delete_data("DELETE from {$CONFIG->dbprefix}entity_relationships where guid_two=$guid_one {$where}");
+ }
+
}
/**
@@ -421,9 +421,9 @@
* @param int $owner_guid
* @param string $order_by
* @param int $limit
- * @param int $offset
- * @param boolean $count Set to true if you want to count the number of entities instead (default false)
- * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites.
+ * @param int $offset
+ * @param boolean $count Set to true if you want to count the number of entities instead (default false)
+ * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites.
* @return array|int|false An array of entities, or the number of entities, or false on failure
*/
function get_entities_from_relationship($relationship, $relationship_guid, $inverse_relationship = false, $type = "", $subtype = "", $owner_guid = 0, $order_by = "time_created desc", $limit = 10, $offset = 0, $count = false, $site_guid = 0)
@@ -438,9 +438,9 @@
$owner_guid = (int)$owner_guid;
$order_by = sanitise_string($order_by);
$limit = (int)$limit;
- $offset = (int)$offset;
- $site_guid = (int) $site_guid;
- if ($site_guid == 0)
+ $offset = (int)$offset;
+ $site_guid = (int) $site_guid;
+ if ($site_guid == 0)
$site_guid = $CONFIG->site_guid;
$access = get_access_list();
@@ -456,36 +456,99 @@
if ($subtype)
$where[] = "e.subtype=$subtype";
if ($owner_guid != "")
- $where[] = "e.owner_guid='$owner_guid'";
- if ($site_guid > 0)
+ $where[] = "e.owner_guid='$owner_guid'";
+ if ($site_guid > 0)
$where[] = "e.site_guid = {$site_guid}";
// Select what we're joining based on the options
$joinon = "e.guid = r.guid_one";
if (!$inverse_relationship)
$joinon = "e.guid = r.guid_two";
-
- if ($count) {
- $query = "select count(distinct e.guid) as total ";
- } else {
- $query = "select distinct e.* ";
- }
+
+ if ($count) {
+ $query = "select count(distinct e.guid) as total ";
+ } else {
+ $query = "select distinct e.* ";
+ }
$query .= " from {$CONFIG->dbprefix}entity_relationships r JOIN {$CONFIG->dbprefix}entities e on $joinon where ";
foreach ($where as $w)
$query .= " $w and ";
- $query .= " (e.access_id in {$access} or (e.access_id = 0 and e.owner_guid = {$_SESSION['id']}))"; // Add access controls
+ $query .= " (e.access_id in {$access} or (e.access_id = 0 and e.owner_guid = {$_SESSION['id']}))"; // Add access controls
if (!$count) {
- $query .= " order by $order_by limit $offset, $limit"; // Add order and limit
- return get_data($query, "entity_row_to_elggstar");
- } else {
- if ($count = get_data_row($query)) {
- return $count->total;
- }
+ $query .= " order by $order_by limit $offset, $limit"; // Add order and limit
+ return get_data($query, "entity_row_to_elggstar");
+ } else {
+ if ($count = get_data_row($query)) {
+ return $count->total;
+ }
}
return false;
}
+ /**** HELPER FUNCTIONS FOR RELATIONSHIPS OF TYPE 'ATTACHED' ****/
+
+ /**
+ * Function to determine if the object trying to attach to other, has already done so
+ * @param int $guid_one This is the target object
+ * @param int $guid_two This is the object trying to attach to $guid_one
+ * @return true | false
+ **/
+
+ function already_attached($guid_one, $guid_two){
+
+ if($attached = check_entity_relationship($guid_one, "attached", $guid_two)){
+ return true;
+ }else{
+ return false;
+ }
+ }
+
+ /**
+ * Function to get all objects attached to a particular object
+ * @param int $guid
+ * @param string $type - the type of object to return e.g. 'file', 'friend_of' etc
+ * @return an array of objects
+ **/
+
+ function get_attachments($guid, $type=""){
+
+ $attached = get_entities_from_relationship("attached", $guid, $inverse_relationship = false, $type, $subtype = "", $owner_guid = 0, $order_by = "time_created desc", $limit = 10, $offset = 0, $count = false, $site_guid = 0);
+ return $attached;
+
+ }
+
+ /**
+ * Function to remove a particular attachment between two objects
+ * @param int $guid_one This is the target object
+ * @param int $guid_two This is the object to remove from $guid_one
+ * @return a view
+ **/
+
+ function remove_attachment($guid_one, $guid_two){
+
+ if(already_attached($guid_one, $guid_two))
+ remove_entity_relationship($guid_one, "attached", $guid_two);
+
+ }
+
+
+
+ /**
+ * Function to start the process of attaching one object to another
+ * @param int $guid_one This is the target object
+ * @param int $guid_two This is the object trying to attach to $guid_one
+ * @return a view
+ **/
+
+ function make_attachment($guid_one, $guid_two){
+
+ if(!(already_attached($guid_one, $guid_two)))
+ if(add_entity_relationship($guid_one, "attached", $guid_two))
+ return true;
+
+ }
+
/**
* Handler called by trigger_plugin_hook on the "import" event.
*/
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