I have these relationships
我有这些关系
User
has_many :products
has_many :stores
Product
belongs_to :user
belongs_to :store
belongs_to :category
Store
belongs_to :user
has_many :products
Category
acts_as_nested_set
has_many :products
User
has
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复杂类别的下降取决于当前的叶节点。
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