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Contents
module Statesman
module Adapters
module ActiveRecordModel
def self.included(base)
base.extend(ClassMethods)
end
module ClassMethods
def in_state(*states)
joins(transition_name)
.joins(transition_join)
.where("#{transition_name}.to_state" => states.map(&:to_s))
.where("transition2.id" => nil)
end
def not_in_state(*states)
joins(transition_name)
.joins(transition_join)
.where("#{transition_name}.to_state NOT IN (?)", states.map(&:to_s))
.where("transition2.id" => nil)
end
private
def transition_class
raise NotImplementedError, "A transition_class method should be " +
"defined on the model"
end
def transition_name
transition_class.table_name.to_sym
end
def model_foreign_key
reflections[transition_name].foreign_key
end
def transition_join
"LEFT OUTER JOIN #{transition_name} transition2
ON transition2.#{model_foreign_key} = #{table_name}.id
AND transition2.sort_key > #{transition_name}.sort_key"
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems