Golang / mgo：如何在mongodb中存储日期（不是ISODate）？

Question

If I store current time like this:

type Test struct {
    Id string `bson:"id" json:"id,omitempty"`
    TestTime time.Time `bson:"testTime" json:"testTime,omitempty"`
}
...

t := Test {
    Id : "TEST0001",
    TestTime : time.Now(),
}
...

c.Insert(t)

Then I use mongochef to search it :

{ 
    "_id" : ObjectId("576bc7a48114a14b47920d60"), 
    "id" : "TEST0001", 
    "testTime" : ISODate("2016-06-23T11:27:30.447+0000")
}

So, mgo store ISODate by default, how can I store Date not ISODate ?

Answer 1

mgo automagically converts time.Time into a Mongo internal date data type (source, actually it's just a timestamp with no timezone info and it's always corrected to UTC). Any other functionaly has to be manually implemented by you.

You can force mgo to correctly (de)serialize your types by implementing the Getter and Setter interfaces from package mgo/bson thought it's pretty low-level so be careful.