Polymorphic Relationships Not Found On Aliased Resource

未指定源文件或测试。首先使用 GET /pet_owners/123?include=pets 重现 aliased PetOwnerResource 示例，然后将其与正常工作的 PersonResource 请求进行比较，并跟踪 model_name 附近的多态关系查找。完成的标准是 aliased resource 能够按预期找到并包含 Cat 和 Dog 关系。

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Description

We are using the v0-11-dev at risk.

If we define all that is necessary for a polymorphic relationship, we can include the related resources via something like GET /people/123?include=pets. Example code that works:

class PersonResource < JSONAPI::Resource
  relationship :pets, polymorphic: true, to: :many, polymorphic_types: %w[Cat Dog]
end

However if we "alias" the primary resource, the analogous request (GET /pet_owners/123?include=pets) does not find the related resources when we include the relationship:

  class PetOwnerResource < JSONAPI::Resource
    model_name 'Person'

    relationship :pets, polymorphic: true, to: :many, polymorphic_types: %w[Cat Dog]
end

It seems the related resource lookup is not taking into account that the primary/source resource might be aliased and using model_name.

Expected: the related resources are found.