From 49210b9085cd7731d0d4633289b0981db0484f0b Mon Sep 17 00:00:00 2001
From: willcast <willcast>
Date: Fri, 31 Oct 2003 15:26:28 +0000
Subject: [PATCH] - Important update: I did not delete categories nor comments
 once a glossary has been deleted. Fixed now.

---
 mod/glossary/db/mysql.php | 33 +++++++++++++++++++++++++++++++++
 mod/glossary/lib.php      | 24 +++++++++++++++++++++++-
 mod/glossary/version.php  |  2 +-
 3 files changed, 57 insertions(+), 2 deletions(-)

diff --git a/mod/glossary/db/mysql.php b/mod/glossary/db/mysql.php
index e996b6ba9bc45..b1b5a15c81edb 100644
--- a/mod/glossary/db/mysql.php
+++ b/mod/glossary/db/mysql.php
@@ -123,6 +123,39 @@ function glossary_upgrade($oldversion) {
         execute_sql( "ALTER TABLE `{$CFG->prefix}glossary`" .
                      " ADD `globalglossary` TINYINT(2) UNSIGNED NOT NULL default '0' AFTER `defaultapproval`");
     }
+
+    if ( $oldversion < 2003103100 ) {
+        print_simple_box("This update might take several seconds.<p>The more glossaries, entries and categories you have created, the more it will take so please be patient.","center", "50%", "$THEME->cellheading", "20", "noticebox");
+        if ( $glossaries = get_records("glossary")) {
+            $gids = "";
+            foreach ( $glossaries as $glossary ) {
+                $gids .= "$glossary->id,";
+            }
+            $gids = substr($gids,0,-1);  // ID's of VALID glossaries
+
+            if ($categories = get_records_select("glossary_categories","glossaryid NOT IN ($gids)") ) {
+                $cids = "";
+                foreach ( $categories as $cat ) {
+                    $cids .= "$cat->id,";
+                }
+                $cids = substr($cids,0,-1);   // ID's of INVALID categories
+                if ($cids) {
+                    delete_records_select("glossary_entries_categories", "categoryid IN ($cids)");
+                    delete_records_select("glossary_categories", "id in ($cids)");
+                }
+            }
+            if ( $entries = get_records_select("glossary_entries") ) {
+                $eids = "";
+                foreach ( $entries as $entry ) {
+                    $eids .= "$entry->id,";
+                }
+                $eids = substr($eids,0,-1);  // ID's of VALID entries
+                if ($eids) {
+                    delete_records_select("glossary_comments", "entryid NOT IN ($eids)");
+                }
+            }
+        }
+    }
     return true;
 }
 
diff --git a/mod/glossary/lib.php b/mod/glossary/lib.php
index 09f70b0f95295..3c34c2b8dfd49 100644
--- a/mod/glossary/lib.php
+++ b/mod/glossary/lib.php
@@ -73,8 +73,30 @@ function glossary_delete_instance($id) {
 
     if (! delete_records("glossary", "id", "$glossary->id")) {
         $result = false;
+    } else {
+        if ($categories = get_records("glossary_categories","glossaryid",$glossary->id)) {
+            $cats = "";
+            foreach ( $categories as $cat ) {
+                $cats .= "$cat->id,";
+            }
+            $cats = substr($cats,0,-1);
+            if ($cats) {
+                delete_records_select("glossary_entries_categories", "categoryid in ($cats)");
+                delete_records("glossary_categories", "glossaryid", $glossary->id);
+            }
+        }
+        if ( $entries = get_records("glossary_entries", "glossaryid", $glossary->id) ) {
+            $ents = "";
+            foreach ( $entries as $entry ) {
+                $ents .= "$entry->id,";
+            }
+            $ents = substr($ents,0,-1);
+            if ($ents) {
+                delete_records_select("glossary_comments", "entryid in ($ents)");
+            }
+        }
+        delete_records("glossary_entries", "glossaryid", "$glossary->id");
     }
-    delete_records("glossary_entries", "glossaryid", "$glossary->id");
 
     return $result;
 }
diff --git a/mod/glossary/version.php b/mod/glossary/version.php
index eac0bd7f6c539..9234157f99874 100644
--- a/mod/glossary/version.php
+++ b/mod/glossary/version.php
@@ -5,7 +5,7 @@
 ///  This fragment is called by moodle_needs_upgrading() and /admin/index.php
 /////////////////////////////////////////////////////////////////////////////////
 
-$module->version  = 2003102800;  // The current module version (Date: YYYYMMDDXX)
+$module->version  = 2003103100;  // The current module version (Date: YYYYMMDDXX)
 $module->cron     = 0;           // Period for cron to check this module (secs)
 
 $release = "0.5 development";   // User-friendly version number