我想确定文档是否存在于集合中。如果文档存在,我希望将一个属性“unread = false”添加到对象。如果它不存在,我希望插入该文档并将“unread = true”添加到该对象。mongo/node TypeError:回调不是查询上的函数
代码在上述咖啡脚本如下:
functionxyz = (db, uid, events, done) ->
async.each events, (eventobj) ->
if db.Event.find(eventobj).count() > 0
eventobj.unread = false
else
db.Event.insert eventobj
eventobj.unread = true
done null, events
我收到的错误是
/Users/owner/Desktop/coding challenge/repo/node_modules/mongodb/lib/mongodb/connection/base.js:246
throw message;
^
TypeError: callback is not a function
at /Users/owner/Desktop/coding challenge/repo/node_modules/mongodb/lib/mongodb/collection/commands.js:55:5
at /Users/owner/Desktop/coding challenge/repo/node_modules/mongodb/lib/mongodb/db.js:1197:7
at /Users/owner/Desktop/coding challenge/repo/node_modules/mongodb/lib/mongodb/db.js:1905:9
at Server.Base._callHandler (/Users/owner/Desktop/coding challenge/repo/node_modules/mongodb/lib/mongodb/connection/base.js:453:41)
at /Users/owner/Desktop/coding challenge/repo/node_modules/mongodb/lib/mongodb/connection/server.js:488:18
at [object Object].MongoReply.parseBody (/Users/owner/Desktop/coding challenge/repo/node_modules/mongodb/lib/mongodb/responses/mongo_reply.js:68:5)
at [object Object].<anonymous> (/Users/owner/Desktop/coding challenge/repo/node_modules/mongodb/lib/mongodb/connection/server.js:446:20)
at emitOne (events.js:77:13)
at [object Object].emit (events.js:169:7)
at [object Object].<anonymous> (/Users/owner/Deskto
可以给我这样的人解释这个错误发生的原因和什么潜力解决方案可能是?
那解决了这个问题,谢谢! – Nick