[TYPO3-mvc] Is some sort of single table inheritance or a similar solution available?

[Jochen Rau]

Hi Thomas.

On 09.04.10 01:26, Thomas "Thasmo" Deinhamer wrote:
> I'd like to extend my extbase extension with several types
> of products, which can be selected by a type field in the backend.
>
> Extbase then should load the according model class.
>
> For example the product types could be books, furniture,
> CDs, food etc. and I want to use a specific model object
> in the frontend/controllers etc.
>
> Exists there a proposed solution for this or any idea
> how to implement this? Should this have been discussed
> at the T3BOARD10?

We discussed this feature on T3BOARD10.

http://forge.typo3.org/issues/show/5883

The implementation is nearly finished but not yet committed to the svn 
repository (only local git). Extbase 1.1.0 took precedence.

The basic idea is the following: If a table holda data of different 
types it has to have an extra field. By default, extbase assumes this 
field to be named "tx_extbase_type". This can be overwritten by the 
"type" in the ctrl section of the TCA (in case of tt_content this is 
"CType"). By default the value of this field is the class name of the 
target type. In case of "CType" there must be a mapping defined for each 
type, like:

config.tx_extbase {
	persistence{
		classes {
			Tx_Voila_Domain_Model_Content_Text {
				mapping {
					tableName = tt_content
					recordType = text
				}
			}
			Tx_Voila_Domain_Model_Content_BulletList {
				mapping {
					tableName = tt_content
					recordType = bullets
				}
			}
		}
	}
}

A call to $textRepository->findAll() will return only Objects of class 
Tx_Voila_Domain_Model_Content_Text. The problem is now: How to query for 
all content elements? There is no $contentRepository->findAll().

Regards
Jochen