First Thoughts On a Grails CMS Object Model

yellek — Wed, 26 Aug 2009 05:37:34 +0000

I’ve been thinking of writing a Grails based CMS that will be loosely based on Drupal. The main aim will be to have a very clean MVC separation and to add features using Grails plugins. To that end I have been thinking about an object model for the site which I have drawn below:

A Template is a layout of regions. Each theme will have a number of templates (which may be only one) A region can have an existence apart from a template so a region on a particular template is called a Template region. Each template region has a context and can have 0 or more blocks to display content. The blocks use the context to decide what to display. A page is an instance of a template with a number of region instances. Each region instance can have a mode such as view or edit.

I haven’t yet decided which parts of this object model will not be represented in the database but rather in template files as tag parameters.

[Template], [Template Region]<*-1>[Context], [Template]<1-*>[Page], [Region Instance]<*-1>[Page], [Region Instance]<*-1>[Template Region], [Region Instance]<*-1>[Mode], [Template Region]<*-*>[Block], [Template Region]<*-1>[Template], [Template Region]<*-1>[Region], [Theme]<1-1..*>[Template], [Site]<1-1..*>[Page].” alt=”UML Class Diagram” />

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First Thoughts On a Grails CMS Object Model