Module: StatusManager::ClassMethods

Defined in:
lib/status-manager.rb

Instance Method Summary collapse

Instance Method Details

#attr_as_status(status_attribute, status_sets = {}) ⇒ Object 



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# File 'lib/status-manager.rb', line 17

def attr_as_status (status_attribute, status_sets={})
  status_store = StatusStore.new(status_attribute, status_sets)
  status_store_list.add(status_store)

  scope "#{status_store.attribute_name}", lambda{ | statuses | where("#{self.table_name}.#{status_store.attribute_name.to_s}" => status_store.values(statuses)) }

  status_store.status_sets.each do |key, value|
    #active_record scope setting
    scope "#{status_store.attribute_name}_#{key}", where("#{self.table_name}.#{status_store.attribute_name}" => value)

    #status check method
    define_method "#{status_store.attribute_name}_#{key}?" do 
      self.send("#{status_store.attribute_name}") == value
    end

    define_method "#{status_store.attribute_name}_was_#{key}?" do 
      self.send("#{status_store.attribute_name}_was") == value
    end

    #update status
    define_method "update_#{status_store.attribute_name}_to_#{key}" do 
      self.update_attributes("#{status_store.attribute_name}" => "#{value}")
    end

    define_method "#{status_store.attribute_name}_to_#{key}" do 
      self.send("#{status_store.attribute_name}=", value)
    end
  end

  #status check method
  define_method "#{status_store.attribute_name}?" do |status|
    self.send("#{status_store.attribute_name}_#{status}?")
  end

  define_method "#{status_store.attribute_name}_was?" do |status|
    self.send("#{status_store.attribute_name}_was_#{status}?")
  end

  #status setter (do not override attr_accessible)
  define_method "#{status_store.attribute_name}_to" do |status|
    raise "#{status} is undefined status or it is group status" unless status_store.status?(status)
    status_value = self.class.status_store_list.get(status_store.attribute_name).value(status)
    self.send("#{status_store.attribute_name}=", status_value)
  end

  # update status
  define_method "update_#{status_store.attribute_name}_to" do |status|
    raise "#{status} is undefined status or it is group status" unless status_store.status?(status)
    self.update_attributes(status_attribute.to_sym => self.class.status_store_list.get(status_store.attribute_name).value(status))
  end

  define_method("#{status_store.attribute_name}_changed?") do |options={}|
    statuses = self.send("#{status_store.attribute_name}_change")
    if statuses
      if statuses[0] == statuses[1]
        return false
      elsif options[:from] && options[:to]
        self.send("#{status_store.attribute_name}_was?", options[:from]) && self.send("#{status_store.attribute_name}?", options[:to])
      elsif options[:to]
        self.send("#{status_store.attribute_name}?", options[:to])
      elsif options[:from]
        self.send("#{status_store.attribute_name}_was?", options[:from])
      else
        return true
      end
    else
      return false
    end
  end

  #get status list
  define_singleton_method "#{status_store.attribute_name.to_s.pluralize}" do
    self.status_store_list.get(status_store.attribute_name).status_sets
  end
end

#status_store_list ⇒ Object 



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# File 'lib/status-manager.rb', line 93

def status_store_list
  if self.class_variable_defined?(:@@status_store_list)
    self.class_variable_get(:@@status_store_list)
  else
    self.class_variable_set(:@@status_store_list, StatusStoreList.new)
  end
end