aborted destroy turned into JSONAPI::Exceptions::ValidationErrors without error message

Bắt đầu với phương thức process của bộ xử lý JR và lib/jsonapi/resource.rb quanh các dòng 224-231, được issue xác định là có liên quan đến các thông báo lỗi của model. Tái hiện một callback destroy của Rails thực hiện throw :abort, sau đó theo dõi cách các lỗi rỗng đến được ValidationErrors. Hoàn tất khi destroy bị hủy tạo ra một lỗi validation có thể sử dụng được thay vì NoMethodError do thiếu code.

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Description

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Bug reports:

JR version 0.9.3

1. Given a record with before_destroy :something_that_may_abort
2. Define def something_that_may_abort; throw :abort if condition?; end
3. POST a DELETE by id to the corresponding resource
4. Get

   NoMethodError: undefined method `code' for nil:NilClass

The problem stems from the JR processor

    def process
      run_callbacks :operation do
        run_callbacks operation_type do
          @result = send(operation_type)
        end
      end

    rescue JSONAPI::Exceptions::Error => e
      @result = JSONAPI::ErrorsOperationResult.new(e.errors[0].code, e.errors)
    end

Where the rescued JSONAPI::Exceptions::Error is a JSONAPI::Exceptions::ValidationErrors and the error_messages attribute is an empty hash. This can be observed in Rails code as

record.destroy
=> false
 record.errors.messages
=> {}

I suspect this isn't an altogether unusual case. Until this is addressed in JR, I'm looking at handling this by adding validation errors to the model before throwing the abort

Proposal

I wonder if there may be a place in JR to add a default validation error message to JSONAPI::Exceptions::ValidationErrors when none are given (i.e. when resource.model_error_messages is empty

https://github.com/cerebris/jsonapi-resources/blob/v0.9.7/lib/jsonapi/resource.rb#L224-L231