Global search

New feature
in Moodle 3.1!

What is Global search?

• Global search lets you search everywhere on the Moodle site that you have access to. A student can search their courses for particular lecture notes, for example, or a teacher could search for subject-related activities.
• The feature needs to be enabled by the administrator and a search box is then available next to the user menu.

Searching the site (when global search is enabled)

• A Global search block may also be added to course pages.

How does it work?

• Click the search icon by the user menu and type a search term into the box that appears, or type into the box in the Global search block if enabled.
• On the next screen, you can simply click the search button to search everywhere, or expand the Filter to search in specific areas:

File:NFFilteringGlobalSearch.png

Filtering the search

• You will then see results displayed from all areas of Moodle you have access to:

File:31GSResults2.png

Search results

How is it set up?

Note: Global search needs a search engine. Instructions for the installing the PHP Solr extension and a Solr server are below. See the Developer docs on Search engine plugins if you wish to write your own.

1. Enable Global search in Site administration > Advanced features
2. Set the feature up in Site administration > Plugins >Search > Manage global search by selecting Solr as the search engine and ticking search area checkboxes as required
3. In Site administration > Plugins > Search > Solr, set Host name to localhost, Port to 8983 and Index name to 'moodle' (the name of the index in Solr)

If you are using Solr with SSL encryption, you will need to configure Moodle as such:

1. You will need a separate key file and cacert file, both in pem format, located on your server Moodle, and readable by the PHP process.
2. In the Moodle Solr config page:
   1. Enable Secure
   2. SSL certificate: /path/to/certs/solr-ssl.cacert.pem
   3. SSL key: /path/to/certs/solr-ssl.key.pem
   4. SSL key Password: The password used to lock the SSL Key
   5. SSL CA certificates name: /path/to/certs/solr-ssl.cacert.pem
3. Save
4. On the search management page it still indicates it can connect to Solr.

How to install Solr

You need PHP Solr extension installed. You can download the official latest versions from [1](http://pecl.php.net/package/solr) The minimum required version is PECL Solr 2.1 for PHP 5 branch and PECL Solr 2.4 for PHP 7 branch.

Basic installation steps (using apache web server):

Linux (Debian/Ubuntu)

   sudo apt-get install libpcre3-dev libxml2-dev libcurl4-openssl-dev
   sudo apt-get install php5-dev
   sudo apt-get install php-pear
   sudo pecl install solr
   sudo service apache2 restart
   sudo sh -c "echo 'extension=solr.so' > /etc/php5/apache2/conf.d/solr.ini"
   sudo sh -c "echo 'extension=solr.so' > /etc/php5/cli/conf.d/solr.ini"

OSX using macports

   sudo port install apache-solr4
   sudo port install php54-solr

OSX using homebrew

   brew install homebrew/php/php56-solr

Windows

Install the pecl package as usual. (This has not yet been tested.)

The Solr server

Moodle 3.1 supports Solr server from 4.0 onwards, although you can only use the Solr schema setup script that we provide with Moodle from Solr 5. The latest Solr 5 available version is the recommended one; the same will apply to Solr 6 once it is released.

The following example snippet (feel free to copy & paste into a .sh script with execution permissions) will download Solr 5.4.1 (replace it with latest 5.x) in the current directory, start the solr server and create an index in it named moodle to add moodle data to it.

   #!/bin/bash
   set -e
   SOLRVERSION=5.4.1
   SOLRNAME=solr-$SOLRVERSION
   SOLRTAR=$SOLRNAME'.tgz'
   INDEXNAME=moodle
   if [ -d $SOLRNAME ]; then
       echo "Error: Directory $SOLRNAME already exists, remove it before starting the setup again."
       exit 1
   fi
   if [ ! -f $SOLRTAR ]; then
       wget http://apache.mirror.digitalpacific.com.au/lucene/solr/$SOLRVERSION/$SOLRTAR
   fi
   tar -xvzf $SOLRTAR
   cd $SOLRNAME
   bin/solr start
   bin/solr create -c $INDEXNAME
   # After setting it up and creating the index use:
   # - "/yourdirectory/solrdir/bin/solr start" from CLI to start the server
   # - "/yourdirectory/solrdir/bin/solr stop" from CLI to stop the server.

Solr 5/6 schema setup

Moodle will use Solr's managed schema interface to install the required fields, you will be directed on what to do from the Manage global search page.

For very large or busy sites, it is recommended that you manually remove the _text_ field, and associated copy directive from, the default Solr schema. This field is not used by Moodle, and will significantly slow indexing, and increase the size of the resulting Solr core.

Solr 4 schema setup

You cannot use the schema setup script when using a Solr 4 server. If you really want to use the Solr 4x branch, here are the field types descriptions:

Extracted from search/classes/document.php

Field name	Field type	Stored	Indexed	Query field
id	org.apache.solr.schema.StrField	true	false	false
itemid	org.apache.solr.schema.TrieIntField	true	true	false
title	org.apache.solr.schema.TextField	true	true	true
content	org.apache.solr.schema.TextField	true	true	true
contextid	org.apache.solr.schema.TrieIntField	true	true	false
areaid	org.apache.solr.schema.StrField	true	true	false
type	org.apache.solr.schema.TrieIntField	true	true	false
courseid	org.apache.solr.schema.TrieIntField	true	true	false
owneruserid	org.apache.solr.schema.TrieIntField	true	true	false
modified	org.apache.solr.schema.TrieDateField	true	true	false
userid	org.apache.solr.schema.TrieIntField	true	true	false
description1	org.apache.solr.schema.TextField	true	true	true
description2	org.apache.solr.schema.TextField	true	true	true
solr_filegroupingid	org.apache.solr.schema.StrField	true	true	false
solr_fileid	org.apache.solr.schema.StrField	true	true	false
solr_filecontenthash	org.apache.solr.schema.StrField	true	true	false
solr_fileindexstatus	org.apache.solr.schema.TrieIntField	true	true	false
solr_filecontent	org.apache.solr.schema.TextField	false	true	true