Lets say we have a nested set up where
class Foo
belongs_to :object
has_many :bar
end
class Bar
belongs_to :foo
has_one :abc
end
class Abc
belongs_to :bar
end
And I want to eager load abc from foo. What would be the best way to do this? Currently this doesn't seem to work:
object.foos(include: {bar: :abc})
My goal is to avoid making code like this:
object.foos.any? do |f|
f.bar.abc.method_1 && f.bar.abc.method_2 && f.bar.abc.method_3
end
And move to more dry code like:
object.foos(rails_magic).any? do |x|
x.method_1 && x.method_2 && x.method_3
end
1 个答案:
答案 0 :(得分：0)
因为你不能在除了类之外的任何东西上进行嵌套的eager加载，所以重新排列你的查询是有意义的：
Foo.includes(:object, :bar => :abc).where('object_id = ?', object.id).references(:object).each do |f|
...
end