app/presenters/drug_detail_presenter.rb
class DrugDetailPresenter < DrugPresenter
def as_json
super.merge(
pmids: self.publications.map(&:pmid),
attributes: drug.drug_attributes.map{|a| AttributePresenter.new(a).as_json},
drug_claims: drug.drug_claims.map{|c| DrugClaimPresenter.new(c).as_json},
)
end
end