ruby - Rails way to write abstracted DateTime calculated SQL condition -


i trying write proper rails abstracted sql statement equivalent to:

select * model date_sub(date_field, interval 7 day) < curdate()

while know can write string sql in rails executed, nice able write in abstract way keeps code database platform agnostic.

it's quite simple, in fact:

model.all( :conditions => [ "date_field between ? , ?", 7.days.ago, date.today ])

and have it.


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