Question

I am storing the data in the mongo table as JSON format using Nodejs and mongoskin. Mongo automatically adding the slashes in the json formatted data. Then when i retrieving, i can not able to parse the data. Please suggest me, How do i remove the slashes or how do i parse the data?

 db.messagetable.find().forEach(printjson)
{
        "_id" : "1861574",
        "MatriId" : "1861574",
        "session" : "{\"messages\":{\"cometchat\":{\"timedifference\":0,\"cometchat_buddytime\":0,\"msgavails\":\"\"}}}",
        "expires" : 1341702134
}

Answer 1

here slahses are used to escape the charatcer " in your JSON encoded string(not a json object because

> JSON.parse("{messages:1}")
SyntaxError: Unexpected token m
    at Object.parse (native)
    at repl:1:7
    at REPLServer.eval (repl.js:80:21)
    at Interface.<anonymous> (repl.js:182:12)
    at Interface.emit (events.js:67:17)
    at Interface._onLine (readline.js:162:10)
    at Interface._line (readline.js:426:8)
    at Interface._ttyWrite (readline.js:603:14)
    at ReadStream.<anonymous> (readline.js:82:12)
    at ReadStream.emit (events.js:88:20)

so the keys must be enclosed with " to represent a string, but you cannot just put " inside the string. To fix that json parsers append the \

 > JSON.parse("{\"messages\":1}")
{ messages: 1 }

so when you parse, just call the JSON.Parse on the session string

> JSON.parse("{\"messages\":{\"cometchat\":{\"timedifference\":0,\"cometchat_buddytime\":0,\"msgavails\":\"\"}}}")
{ messages: 
   { cometchat: 
      { timedifference: 0,
        cometchat_buddytime: 0,
        msgavails: '' } } }