Rails association Errors

[omerpucit]

Expected Behavior

Should working with #<ActiveModel::Errors [#ActiveModel::NestedError

Actual Behavior

Giving error related to relational data errors.

Like

class Book < ApplicationRecord
  belongs_to :author, autosave: true

  delegate :author_name, :author_name=, to: :lazy_load_author

  def lazy_load_author
    author || build_author
  end
end

# Let's go with author_name, instead name
class Author < ApplicationRecord
  has_many :books
  validates :author_name, presence: true
end

book = Book.new(book_name: 'ABC', author_name: '').save
render jsonapi_errors: book.errors, status: :unprocessable_entity

This one giving error
NoMethodError - undefined method `book.author_name' for #<Book

Steps to Reproduce the Problem

Specifications

• Version: Latest
• Ruby version: Latest

[stas]

@omerpucit thanks for the report, but I don't see how this is related to jsonapi.rb.

In fact, it's pretty clear that the error is somewhere within the way you set up things:

NoMethodError - undefined method `book.author_name' for #<Book

If it helps, I'm happy to review the serializer for the Book, but there's little else I can do to help here.

I'll be closing this, but feel free to follow-up if you find anything I did miss.

[omerpucit]

The issue was with the nested objects ( and with the rails method -> errors_object.generate_message ). Anyway, I have already fixed it for my own case.

attribute :detail do |object, params|
      error_key, error_hash = object
      errors_object = params[:model].errors
      # Rails 4 provides just the message.
      if false && error_hash[:error].present? && error_hash[:error].is_a?(Hash)
        message = errors_object.generate_message(
          error_key, nil, error_hash[:error]
        )
      elsif false && error_hash[:error].present?
        message = errors_object.generate_message(
          error_key, nil, error_hash
        )
      else
        message = error_hash[:message]
      end

      errors_object.full_message(error_key, message)
    end

[stas]

@omerpucit we do not support, nor plan to support nested resources/errors. And I generally do not recommend this pattern.

Glad you worked it out 🙏