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嘗試一次性學習Meteor框架以及coffeescript/node。一直在使用一個簡單的文件上傳程序,利用onloadend。當FileReader onloadend事件函數被調用時,我嘗試確定文件是否已經存在,如果是這樣,我用新的文件數據和版本進行更新。Collection.update提供服務器錯誤
該代碼適用於插入但不更新。有人可以幫忙嗎?我已經發布到流星談話W/O答案,因爲我懷疑它的週末(當我做了我的大部分實驗)。
代碼片段...
file_reader.onloadend = ((file_event) ->
(event) ->
f_filename = escape file_event.name
version = 0
f_record = null
f_record = doc_repo.findOne { name: f_filename }
if f_record && f_record.name
doc_repo.update
name: f_filename
,
$set:
version: 10
else
doc_repo.insert
name: f_filename
data: event.target.result
version: 0
)(file_obj)
錯誤
Exception while invoking method '/documents/update' TypeError: Cannot read property 'toBSON' of undefined
at Function.calculateObjectSize (/usr/local/meteor/lib/node_modules/mongodb/node_modules/bson/lib/bson/bson.js:210:12)
at BSON.calculateObjectSize (/usr/local/meteor/lib/node_modules/mongodb/node_modules/bson/lib/bson/bson.js:1463:15)
at UpdateCommand.toBinary (/usr/local/meteor/lib/node_modules/mongodb/lib/mongodb/commands/update_command.js:67:20)
at Connection.write (/usr/local/meteor/lib/node_modules/mongodb/lib/mongodb/connection/connection.js:138:40)
at __executeInsertCommand (/usr/local/meteor/lib/node_modules/mongodb/lib/mongodb/db.js:1837:14)
at Db._executeInsertCommand (/usr/local/meteor/lib/node_modules/mongodb/lib/mongodb/db.js:1912:7)
at Collection.update (/usr/local/meteor/lib/node_modules/mongodb/lib/mongodb/collection.js:445:13)
at app/packages/mongo-livedata/mongo_driver.js:178:16
at Db.collection (/usr/local/meteor/lib/node_modules/mongodb/lib/mongodb/db.js:507:44)
at _Mongo._withCollection (app/packages/mongo-livedata/mongo_driver.js:51:13)