This site has been archived and you can no longer log in or post new messages. For up-to-date community resources please visit

eZ Community » Forums » Install & configuration » DB tables linking contentobject to...

DB tables linking contentobject to meta attribute

DB tables linking contentobject to meta attribute

Wednesday 13 August 2014 1:00:03 pm - 2 replies


I'm trying to figure out how a contentobject, e.g. an article, is linked to a meta attribute such as those used to refine search results.

I've been trying to find my way using the DB docs but no joy.

Is anyone able to tell me how these are associated?


Thursday 14 August 2014 10:53:19 am

If you can refine search results, you are most likely using ezfind (solr), which uses a dedicated index, outside of the database.

In eZ, content is mainly stored in 6 tables: classes, class_attributes, objects, object_versions, object_attributes and nodes.

In the solr index, each object attribute is stored, based on its type (eg string, xmltext, etc...), plus a lot of other object metadata. The mapping is done by php code in the ezfind extension. For object attributes, the mapping is flexible: you can configure custom mappers that e.g. take a single eZ attribute (say, a location) and turn it into 2 solr fields (lat, long).

Connecting to the solr admin console (http://localhost:8983/solr/admin by default) and using it to examine the structure of content stored in it is very instructive.

Thursday 14 August 2014 10:57:57 am

ps: if otoh what you are interested are the object metadata as available in (legacy) template code, then you have to look at the ezpersistentobject php class - which is the eZ ORM workhorse.

In short: all subclasses of ezpersistentobject have a list of "attributes". Some of those are mapped on the fields of a db table, some other are generated on access via a function call. The method named "definition" is where the description of such attributes is done.

So in template $node.parent is mapped to $node->attribute('parent'); in php, which in turn calls $this->fetchParent()


You must be logged in to post messages in this topic!

36 542 Users on board!

Forums menu

Proudly Developed with from