active_model_serializer_example

🔧 Leverage ActiveModel::Serializers for Structured APIs

ActiveModel::Serializer allows you to extract JSON structure into dedicated classes, giving you reusable, testable serializers. Define attributes, associations, and custom methods in your serializer for consistent API responses.

# app/serializers/user_serializer.rb
class UserSerializer < ActiveModel::Serializer
  attributes :id, :name, :email
  has_many :posts

  def email
    object.email.downcase
  end
end

# In controller
def show
  user = User.find(params[:id])
  render json: user, serializer: UserSerializer
end