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authorSem <sembrestels@riseup.net>2012-07-20 07:09:38 +0200
committerSem <sembrestels@riseup.net>2012-07-20 07:09:38 +0200
commit07b599a683760d2542014bb04a681463420a3565 (patch)
treecfcd06671529eeec7790fb70a8d490094d7942c9 /engine/lib/relationships.php
parentea0140d87534c3b10e489d13a1449ebb79da832d (diff)
parent174763bcbcd20812dc09f27b64908f9d71b523b9 (diff)
downloadelgg-07b599a683760d2542014bb04a681463420a3565.tar.gz
elgg-07b599a683760d2542014bb04a681463420a3565.tar.bz2
Merge branch 'lorea-preprod'
Conflicts: .gitmodules
Diffstat (limited to 'engine/lib/relationships.php')
-rw-r--r--engine/lib/relationships.php9
1 files changed, 9 insertions, 0 deletions
diff --git a/engine/lib/relationships.php b/engine/lib/relationships.php
index f50c4a485..09d541e22 100644
--- a/engine/lib/relationships.php
+++ b/engine/lib/relationships.php
@@ -239,6 +239,15 @@ function get_entity_relationships($guid, $inverse_relationship = FALSE) {
* Also accepts all options available to elgg_get_entities() and
* elgg_get_entities_from_metadata().
*
+ * To ask for entities that do not have a particulat relationship to an entity,
+ * use a custom where clause like the following:
+ *
+ * $options['wheres'][] = "NOT EXISTS (
+ * SELECT 1 FROM {$db_prefix}entity_relationships
+ * WHERE guid_one = e.guid
+ * AND relationship = '$relationship'
+ * )";
+ *
* @see elgg_get_entities
* @see elgg_get_entities_from_metadata
*