Exactly, i noticed the difference between the 4th and 6th too late, but now 
that i know... A workaround to this confusion would be highly appreciated. 

Remco

Op woensdag 20 augustus 2014 16:57:44 UTC+2 schreef Anthony:
>
> Depends on where you look in the book: 
>> http://www.web2py.com/books/default/chapter/35/06/the-database-abstraction-layer
>>  
>>  - i just copied that line yesterday. Because of the differences between 
>> your line and mine i googled 'virtual fields web2py' 
>> <https://www.google.nl/search?hl=nl&q=db.item.total_price+%3D+Field.Virtual(&meta=&aq=f&oq=&gws_rd=ssl#hl=nl&q=Virtual+Fields+Web2py>
>>  
>> and found both old (4th edition) and new documentation (6th edition)in the 
>> book. 
>
>
> Your first link is to the Chinese translation of the book, which is (a) 
> incomplete (therefore, most of it is still English) and (b) still at the 
> 4th edition. We should probably do something to avoid this confusion when 
> coming from Google search results. In the meantime, please be sure to link 
> to the current English edition: http://web2py.com/book. 
>
> Anthony
>

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