I have the following models:
class Company < ActiveRecord::Base
has_many :price_movements
has_many :goods_movements
end
class PriceMovement < ActiveRecord::Base
belongs_to :company
end
class GoodsMovement < ActiveRecord::Base
belongs_to :company
end
I am trying to join everything together into an sql in the form of activerecord, but I'm not sure how to go about doing it because I'm relatively new to ROR.
select * from companies c
inner join price_movements p
on c.id = p.company_id
inner join goods_movements g
on c.id = g.company_id
and g.date = p.date
The key problem for me is the second link where goods_movement date == price_movement date. Can someone advice on whether there's any way to do it?
Company.joins(:price_movements,:goods_movements).where("goods_movement.date = price_movement.date")
通过此链接,它详细解释了如何使用ActiveRecord
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