where_object.rb

  # Performs an attribute search on the serialized object
  def self.where_object(args = {})
    fail ArgumentError, 'expected to receive a Hash' unless args.is_a?(Hash)

    if columns_hash['object'].type == :jsonb
      where_conditions = "object @> '#{args.to_json}'::jsonb"
    elsif columns_hash['object'].type == :json
      where_conditions = args.map do |field, value|
        "object->>'#{field}' = '#{value}'"
      end
      where_conditions = where_conditions.join(" AND ")
    end

    where(where_conditions).order('created_at DESC')
  end