Ralis Multiple foreign_key

Question

我在has_many上組合多個外鍵時遇到了問題。我明白，這不是has_many上foreign_key的明確意圖。但無論我在尋找一種簡單的方法來組合兩個外鍵。

我試着將兩個的has_many的，像這樣：

has_many :primary_clients, foreign_key: :coach_id, inverse_of: :coach do 
end 

has_many :secondary_clients, foreign_key: :coach_two_id, inverse_of: :coach do 
end 

def clients 
    Client.where("primary_clients = ? OR secondary_clients = ?", self.id, self.id) 
end 

而且我也試過unscope重新定義範圍：

has_many :clients, ->(user) { unscope(:where).where("coach_id = :id OR coach_two_id = :id", id: ids) }, inverse_of: :coach do 
end 

我喜歡的東西很簡單，像後是：

has_many :clients, foreign_key: {:coach_id, :coach_two_id}, inverse_of: :coach do 
end 

任何意見，以正確的方向指向我？

Answer 1

一個非常小集合，你可以只是做

primary_clients | secondary_clients與union操作|