Unable to print BSON object from javascript

Question

My mongoDB collection looks like this :

{
    "_id" : ObjectId("5070310e0f3350482b00011d"),
    "emails" : [
            {
                    "_id" : ObjectId("5070310e0f3350482b000120"),
                    "_type" : "Email",
                    "name" : "work",
                    "email" : "peter.loescher@siemens.com",
                    "current" : true
            }
    ]
}

and this is the .js code i use to print the contents :

c = db.contacts.findOne( { "emails.email" : { $ne : null } }, { "emails" : 1 } )

print(c._id.toString() + " " + c.emails[0]);

when I try to run this javascript file, it is just displaying the id but not the email array.

output:
5070310e0f3350482b00011d [object bson_object]

but when I try c.emails[0].email is is giving proper result. i.e. peter.loescher@siemens.com

All I need is I want to display the whole emails embedded object.

i.e.
"emails" : [
        {
                "_id" : ObjectId("5070310e0f3350482b000120"),
                "_type" : "Email",
                "name" : "work",
                "email" : "peter.loescher@siemens.com",
                "current" : true
        }
]

Where I am going wrong?. Any help would be appreciated.

score 45 · Accepted Answer · answered Nov 29 '12 at 09:40

45

You need printjson to output a nicely formatted JSON:

printjson(c.emails[0]);

Here it is the documentation.

answered Nov 29 '12 at 09:40

Alexander Azarov

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54

What if I want compact form, not wish it to print multiple lines ? – Lewis Chan Jul 17 '21 at 03:48
1

@LewisChan please ask another question and describe your requirements – Alexander Azarov Jul 17 '21 at 09:36

Unable to print BSON object from javascript

1 Answers1