class Feature
include DataMapper::Resource
belongs_to :license
belongs_to :slot
has n, :runtime_features
property :id, Serial
property :max_user, Integer
property :valid_till, DateTime
timestamps :at
def name
slot.name
end
def self.avail_slots
Slot.editable
end
def self.restricted
all(:max_user.gt => 0, :max_user.gt =>
Feature.runtime_features.count())
end
end
The restricted method if Feature should only return the Features that
have not exceeded its max_user count.
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