1. Ruby / Говнокод #7645

    −104

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    def entities(model, params = {})
        @entities                 ||= {}
        @entities[model]    ||= []

        if @entities[model].blank? or parameters_changed?(model, params)
          @entities[model]  = []
          include           = params[:include]  || nil
          group             = params[:group]    || nil
          order             = params[:order]    || nil
          page              = params[:page]     || nil
          entity_ids        = []
          model_role        = nil
          model_class       = model.to_s.classify.constantize

          if self.has_role_for?(model_class)
            self.roles_for(model_class).uniq.each do |role|
              if role.authorizable_id.blank?
                raise "Authorization problem! Found more than one #{model_class} model permission!" unless model_role.blank?
                model_role = role.name
                next
              end

              if !role.authorizable_id.blank? && MerchantRole::MERCHANT_ROLES.include?(role.name)
                entity_ids << role.authorizable.id
              end
            end

            if entity_ids.blank? and MerchantRole::MERCHANT_ROLES.include?(model_role)
              #WARNING! RECURSION! EVIL!
              if MerchantRole.has_entity_parent?(model)
                parent_model    = MerchantRole.entity_parent(model)
                parent_entities = self.entities(parent_model)
                unless parent_entities.blank?
                  _params = {
                    :conditions => conditions_and_parameters(params, nil, ["`#{model.to_s}`.`#{parent_model.to_s.singularize}_id` IN (?)", parent_entities.map(&:id)]),
                    :include => include,
                    :order => order,
                    :group => group
                  }
                  _params.merge!(:page => page) if params.keys.include?(:page)
                  if block_given?
                    (self.is_reseller? ? self.reseller.send(model) : model_class).each(_params) do |o|
                      yield o
                    end
                  else
                    @entities[model] = (self.is_reseller? ? self.reseller.send(model) : model_class).send(params.keys.include?(:page) ? :paginate : :find, :all, _params)
                  end
                end
              else
                _params = {
                  :conditions => conditions_and_parameters(params, nil),
                  :include => include,
                  :order => order,
                  :group => group
                }
                _params.merge!(:page => page) if params.keys.include?(:page)
   
                if block_given?    #Find only merchants associated with the reseller or all merchants if we are no reseller.
                  (self.is_reseller? ? self.reseller.send(model) : model_class).each(_params) do |o|
                    yield o
                  end
                else
                  @entities[model] = (self.is_reseller? ? self.reseller.send(model) : model_class).send(params.keys.include?(:page) ? :paginate : :find, :all, _params)
                end
              end
            else
              _params = { :conditions => conditions_and_parameters(params, nil, ["`#{model.to_s}`.`id` IN (?)", entity_ids]),
                                   :include => include,
                                   :order => order,
                                   :group => group }
               _params.merge!(:page => page) if params.keys.include?(:page)
               if block_given?
                 model_class.each(_params) do |o|
                   yield o
                 end
               else
                 @entities[model] = model_class.send(params.keys.include?(:page) ? :paginate : :find, :all, _params)
               end
             end
           end
        end
     entities[@model]
   end

    This method does the following (you guessed it, right?):

    #Fetch entities for which we have a read permission.
    #This is now it should work:
    #1. : If we don't have any role on the model, we won't get anything.
    #2a.: Check roles we have for whole model. If no role for whole model we can only fetch instances we have assigned.
    #2b.: Check all instances we have a role for and store them.
    #3a.: We have roles for instances -> Goto(#7)
    #3b.: We have no instance roles but have a role for the whole model.
    #4. : Check recusively if we have roles fro a parent model (channels -> merchants).
    #5a.: If we have a parent role and got parent entities returned we only fetch instances belonging to the parent entities.
    #6a.: If we have a parent role and got no entities back, then we won't get anything since we are not supposed to.
    #7. : Get all instances based on our reseller or globally for the system.

    Запостил: emilpetkov, 25 Августа 2011

    Комментарии (6) RSS

    • ava roman-kashitsyn 25.08.2011 12:24 # +2

      Руби. Мясо. Руби - это глагол.
      Ответить

    • ava MaxD 25.08.2011 12:59 # 0

      include = params[:include] || nil
      чет не понял глубокий смысл этого...
      если params[:include] nil то тогда это равноценно
      include = nil || nil

      вообще дальше много букв не осилил... я ж надеюсь что тебе там нечего пофиксить не надо!? :)
      Ответить

    • ava nbvec222 10.09.2011 14:20 # 0

      Попробовал код. Что-то странное с моей командной строкой…
      Ответить

    • ava akostrikov 22.07.2013 11:58 # 0

      #WARNING! RECURSION! EVIL!
      # GOTO CONSIDERED HARMFULL!
      # IT MAY FAIL!
      # "MEAT".chop!
      Ответить

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