ep.all('topics', function (topics) {
      topics = topics.map(function (topic) {
        topic.author = _.pick(topic.author, ['loginname', 'avatar_url']);
        return _.pick(topic, ['id', 'author', 'tab', 'content', 'title', 'last_reply_at',
          'good', 'top', 'reply_count', 'visit_count', 'create_at', 'author']);