[TYPO3-irre] Converting old mm-tables to IRRE

[Oliver Hader]

Hi Mischa,

Mischa Heißmann wrote:
> I try to use old mm-tables with uid_foreign and uid_local as a base for
> an IRRE featured extension.
> Will say: I've got an old ext with mm-tables and like to convert it
> easily into an IRRE.
> 
> Has anybody experiences or can somebody help me what to do? Using the
> tutorial doesn't help very much.

You can do this by e.g. the following in your TCA columns section:

...
'children' => array(
	'label' => '...',
	'config' => array(
		'type' => 'inline',
		'foreign_table' => 'tx_myext_child',
		'MM' => 'tx_myext_parent_child_mm',
		'appearance' => array(...),
	)
)
...

But the question is, what are you planning to do. The intermediate table
used for real MM relations doesn't have a uid. This means that a
relation is not identified unique by one parameter - but by three
(uid_local, uid_foreign, tablenames) which have to be pushed to every
point where two entities shall get related to each other by MM.
This is the reason why regular MM relations are not fully supported and
implemented in IRRE. Maybe this gets improved for TYPO3 4.2 if there is
a general request to have it inside the Core.

But as mentioned, the disposal of IRRE with 1:n/m:n or the old TCA types
using MM depends on your specific demands and scenario.


olly
-- 
Oliver Hader
http://inpublica.de/