[TYPO3] TCA Group/DB (mm)

[Christian Kalkhoff]

Hi,

I developed an extension and encounter unexpected behaviour using the table 
relations feature with true mm tables.

On some datasets i set a relation, on saving it adds just another. Deleting 
both and saving deletes all relations. Adding the right one again - And there 
is the other again after saving.

This happens after i truncated the tables. I tried that because i had a 
similar problem:

I deleted all relations, saved and it added some missing links (linking to non 
existent data) to the database.

Here is some example data from my tca.php:

        "parent" => Array (     
            "exclude" => 1,     
            "label" => 
"LLL:EXT:hacatalogue/locallang_db.php:tx_hacatalogue_categories.parent",     
            "config" => Array (
                "type" => "group",[conf_rel_type]
                "internal_type" => "db",
                "allowed" => "tx_hacatalogue_categories",  
                "size" => 1,   
                "minitems" => 0,
                "maxitems" => 1,    
                "MM" => "tx_hacatalogue_categories_parent_mm",  
            )
        ),

Can you please give me any clue what i can look for, what could be wrong or 
why i am wrong?

Thank you in advance.
Christian
-- 
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Christian Kalkhoff
site: http://ninan.info