The most basic-ass presenter ever

gistfile1.txt

class Api::V3::CompanyPresenter
  attr_accessor :company, :includes

  def initialize(company, includes: [])
    @company = company
    @includes = Array(includes)
  end

  def as_json
    {
      uuid:                        company.uuid,
      name:                        company.name,
      status:                      company.status,
    }.tap do |hash|
      # Don't do big slow stuff if you don't need to
      hash[:foo] = company.foo_is_slow if (includes & ['foo', 'full']).any?
      hash[:bar] = company.bar_is_big if (includes & ['bar', 'full']).any?

      if includes.include? 'full'
        hash[:bla] = company.bla
        # all the other shit... including slow stuff
      end
    end
  end
end