gistfile1.txt

>> Event.find(123).participants.ascend_by_number
[works]

>> Event.find(123).participants.published.all(:order => :number)
[works]

>> Event.find(123).participants.published.ascend_by_number
[returns the whole table until memory is full and server crash]
SQL :
SELECT * FROM "events" WHERE ("events"."id" = 123)
SELECT * FROM "participants" WHERE ("participants"."published" = 't') ORDER BY participants.number ASC
=> the WHERE event_id is gone !