贡献者容错处理

app/views/repositories/_contributor.json.jbuilder

@@ -1,19 +1,19 @@
 user = $redis_cache.hgetall("v2-owner-common:#{contributor["name"] || contributor["login"]}-#{contributor["email"]}")
 if user.blank?
   json.contributions contributor["commits"] || contributor["contributions"]
-  json.login contributor["name"].to_s.downcase || contributor["login"].to_s.downcase
+  json.login (contributor["name"] || contributor["login"]).to_s.downcase
   json.type nil
-  json.name contributor["name"].to_s.downcase || contributor["login"].to_s.downcase
+  json.name (contributor["name"] || contributor["login"]).to_s.downcase
   json.email contributor["email"]
   json.image_url User::Avatar.get_letter_avatar_url(contributor["name"] || contributor["login"])
   json.contribution_perc User.new(login: (contributor["name"] || contributor["login"]), mail: contributor["email"]).simple_contribution_perc(project, contributor["contribution_perc"])
 else
   json.contributions contributor["commits"] || contributor["contributions"]
   json.id user["id"]
-  json.login user["login"] || contributor["name"].to_s.downcase || contributor["login"].to_s.downcase
+  json.login (user["login"] || contributor["name"] || contributor["login"]).to_s.downcase
   json.email user["email"]
   json.type user["type"]
-  json.name user["name"].to_s.downcase || contributor["name"].to_s.downcase || contributor["login"].to_s.downcase
+  json.name (user["name"] || contributor["name"] || contributor["login"]).to_s.downcase
   json.image_url user["avatar_url"]
   db_user = User.find_by_id(user["id"])
   json.contribution_perc db_user.simple_contribution_perc(project, contributor["contribution_perc"]) if db_user.present?