[support] Computed field, how to acces Foreignkey's data

[Marolijo - Pol maresma]

>>Hello, from a computed field I wanna to a typical bill-line calculation
doing a multiplication  
>> price = quantity * fk_product_price 
>> How can I do that? I tried wihout luck. 
>> $node_field[0]['value'] = $node->field_quantitat[0]['value'] *
$node->field_fk_producte[0]['value']......; 
>>  Thank's!
 
> Exec "print_r($node)". Are there present field_quantitat and
field_fk_producte ? 
 
Yes booth are present but I think I need the field_preu (price) stored on
the producte (product) node type identified by the field_fk_producte.  
Is it possible to do that? 
 
> What is fk_* ? 
 
I use the fk_ prefix on all node_related CCK fields to avoid confussion when
I'm using views or adding new node_Relations to other content types. It
comes from the Foreign Key on relational databases ( I know it isn' the way
that Drupal Stores it but it's usefull to me). 

Thank's for all!
Pol Maresma 


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