[TYPO3-core] RFC: Bug: IRRE - Related child records are not updated when copying to a different page

[Oliver Hader]

Hi Ingo,

Ingo Renner wrote:
> 
> Am 15.02.2007 um 19:47 schrieb Oliver Hader:
> 
> Hi Olly,
> 
>> Problem:
>> A structure of 1:n dependend records (parent->child->grandchild) shall
>> be copied and pasted on a different page than the original one. The
>> parent record will be inserted correctly on the destination page. The
>> child records unfortunatelly not - they are duplicated on the original
>> page.
> 
> Is it wanted at all to have the child records copied with the parent
> record?
> If I compare it with categories in news I can copy a category to a
> different page without having to copy the child categories to the same
> page and still having the relation intact...

Inline Relational Record Editing handles direct 1:n related structures.
Thus you can call the relationship as a composition. In this context
children cannot exist without the existence of their parent.
The disposal of TCA defined intermediate tables is a special case on
this issue. The items defining the m:n relationship are the children
depending on their parent. The underlying related records are in this
case aggregated instead of composed.

Examples:
1) hotel --[1:n]--> offer --[1:n] --> price
2) hotel --[1:n]--> hotel_offer_rel <--[1:n]-- offer
   or in short form: hotel <--[m:n]--> offer

Result: It is wanted that also child records which depend on their real
parent are moved, copied or deleted according to their parent record.


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