app/controllers/api/v1/send_grid/events_controller.rb
class Api::V1::SendGrid::EventsController < Api::V1::ApiController
def update
webhook_data = JSON.parse(request.body.read)
webhook_data.each do |data|
invitation = Invitation.find_by(email: data["email"])
invitation.status = data["event"] if invitation
invitation.save
end
end
end