Requirements for Solr Search
Solr searching in SimpleSearch has a few requirements:
- You are running SimpleSearch version 1.4 or later
- You have installed the PECL Solr package, which can be found here.
- You have a running Solr server with an index that can be used for the MODX installation.
If you need more help getting a Solr server installed, the official Solr documentation is quite helpful.
SimpleSearch also provides you with a sample schema.xml for your Solr configuration. You can find it in the following location:
Rename the file to 'schema.xml' and place in your appropriate Solr core's conf/ directory, and then restart Solr.
Configuring SimpleSearch to use Solr
Go to System Settings and change the following settings:
- sisea.driver_class -> Change to "SimpleSearchDriverSolr"
- sisea.driver_db_specific -> Change to "No", since Solr does not depend on SQL databases
From there, also check to make sure any other Solr-specific configuration options are correct.
Index Your Existing Resources
From there, you'll need to index your already existing Resources into Solr. Well, SimpleSearch provides you with a utility Snippet for just that! Simply place the "SimpleSearchIndexAll" snippet onto any page, and view the page. (Make sure you've already setup Solr as outlined above first!) The snippet will run, indexing all your existing Resources into the Solr index. After it has run, you should remove the Snippet call.
As you continue to develop your site, SimpleSearch will automatically index Resources as you work on them, via the SimpleSearchIndexer plugin.
That's it! You now have Solr-powered search on your site.
A few SimpleSearch properties do not apply to Solr-based searches. These are:
- maxWords, useAllWords, searchStyle, fieldPotency, customPackages
These properties on the SimpleSearch snippet will be ignored if you are using Solr search.
Note for 2.1.0-rc4 and Earlier Users
Due to a bug in MODX 2.1.0-rc4 and earlier, you will need to patch the file here:
Find the string "OnDocUnpublished" in the invokeEvent call. Replace it with: "OnDocUnPublished" (note the capital P). This will allow Solr to reindex the Resource if it gets unpublished via the tree.
This issue has been fixed in MODX Revolution 2.1.0-pl and later.