class Decidim::Meetings::Admin::MeetingRegistrationsForm

This class holds a Form to update meeting registrations from Decidim’s admin panel.

def available_slots_greater_than_or_equal_to_registrations_count 

def available_slots_greater_than_or_equal_to_registrations_count
  errors.add(:available_slots, :invalid) if available_slots < meeting.registrations.count
end

def meeting 

def meeting
  @meeting ||= context[:meeting]
end