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问题描述
我试图通过使用以下代码来获取ObjectId的mongodb记录，但仍通过err.Error()
以下是我的mongo收集示例
{ "_id" : ObjectId("5a2a75f777e864d018131a59"), "callDate" : "22/12/2017", "time" : "16.25", "callType" : "a", "position" : "aaa", "description" : "aaaaaa", "qty" : 2, "estimatedDuration" : 2.3, "estimatedOvertime" : 3.44, "rate" : 4, "laborExtension" : 3 }
{ "_id" : ObjectId("5a2a75f877e864d018131a5b"), "callDate" : "22/12/2017", "time" : "16.25", "callType" : "a", "position" : "aaa", "description" : "aaaaaa", "qty" : 2, "estimatedDuration" : 2.3, "estimatedOvertime" : 3.44, "rate" : 4, "laborExtension" : 3 }
{ "_id" : ObjectId("5a2a75fa77e864d018131a5d"), "callDate" : "22/12/2017", "time" : "16.25", "callType" : "a", "position" : "aaa", "description" : "aaaaaa", "qty" : 2, "estimatedDuration" : 2.3, "estimatedOvertime" : 3.44, "rate" : 4, "laborExtension" : 3 }
以下是我的模特
type RhinoJobs struct {
ID bson.ObjectId `db:"id" json:"id" bson:"_id"`
CallDate string `db:"call_date" json:"callDate" bson:"callDate"`
Time string `db:"time" json:"time" bson:"time"`
CallType string `db:"call_type" json:"callType" bson:"callType"`
Position string `db:"position" json:"position" bson:"position"`
Description string `db:"description" json:"description" bson:"description"`
Qty int `db:"qty" json:"qty" bson:"qty"`
EstimatedDuration float64 `db:"estimated_duration" json:"estimatedDuration" bson:"estimatedDuration"`
EstimatedOvertime float64 `db:"estimated_overtime" json:"estimatedOvertime" bson:"estimatedOvertime"`
Rate float64 `db:"rate" json:"rate" bson:"rate"`
LaborExtension float64 `db:"labor_extension" json:"laborExtension" bson:"laborExtension"`
}
我想按对象ID搜索这些记录
"gopkg.in/mgo.v2"
func GetMongoSession() (*mgo.Session, error) {
if mgoSession == nil {
var err error
mgoSession, err = mgo.Dial(mongoConnectionUrl)
if err != nil {
return nil, err
}
}
return mgoSession.Clone(), nil
}
func GetJobByID(objID string) (models.RhinoJobs, error) {
var job models.RhinoJobs
s, err := commons.GetMongoSession()
if err != nil {
errMsg := "error occurred while creating mongoDB connection stack:" + err.Error()
print(err.Error())
return job, errors.New(errMsg)
}
defer s.Close()
err = s.DB("rhino").C("jobs").FindId(bson.ObjectIdHex("5a2a75f777e864d018131a59")).One(&job)
if err != nil {
print(err.Error())
errMsg := "error occurred while getting data :" + err.Error()
return job, errors.New(errMsg)
}
return job, nil
}
但是当我尝试通过以下代码获取所有收集记录时，它会很好地运行
err := s.DB("rhino").C("jobs").Find(nil).All(&jobs)
我还检查了SO Q& A，但没有成功
解决方案
我遇到了完全相同的问题，我的问题是我最近切换到了新的mgo fork(正在积极开发中)，并且混淆了依赖项. /p>
我基本上将globalsign TOGETHER中的mgo与gopkg.in中的旧bson一起使用.请检查您的依赖项！
"github.com/globalsign/mgo"
"gopkg.in/mgo.v2/bson"
这是错误的！
应该是:
"github.com/globalsign/mgo"
"github.com/globalsign/mgo/bson"
I'm try to get mongodb record by ObjectId by using following code, but keep getting not found by err.Error()
Following is my mongo collection sample
{ "_id" : ObjectId("5a2a75f777e864d018131a59"), "callDate" : "22/12/2017", "time" : "16.25", "callType" : "a", "position" : "aaa", "description" : "aaaaaa", "qty" : 2, "estimatedDuration" : 2.3, "estimatedOvertime" : 3.44, "rate" : 4, "laborExtension" : 3 }
{ "_id" : ObjectId("5a2a75f877e864d018131a5b"), "callDate" : "22/12/2017", "time" : "16.25", "callType" : "a", "position" : "aaa", "description" : "aaaaaa", "qty" : 2, "estimatedDuration" : 2.3, "estimatedOvertime" : 3.44, "rate" : 4, "laborExtension" : 3 }
{ "_id" : ObjectId("5a2a75fa77e864d018131a5d"), "callDate" : "22/12/2017", "time" : "16.25", "callType" : "a", "position" : "aaa", "description" : "aaaaaa", "qty" : 2, "estimatedDuration" : 2.3, "estimatedOvertime" : 3.44, "rate" : 4, "laborExtension" : 3 }
Following is my model
type RhinoJobs struct {
ID bson.ObjectId `db:"id" json:"id" bson:"_id"`
CallDate string `db:"call_date" json:"callDate" bson:"callDate"`
Time string `db:"time" json:"time" bson:"time"`
CallType string `db:"call_type" json:"callType" bson:"callType"`
Position string `db:"position" json:"position" bson:"position"`
Description string `db:"description" json:"description" bson:"description"`
Qty int `db:"qty" json:"qty" bson:"qty"`
EstimatedDuration float64 `db:"estimated_duration" json:"estimatedDuration" bson:"estimatedDuration"`
EstimatedOvertime float64 `db:"estimated_overtime" json:"estimatedOvertime" bson:"estimatedOvertime"`
Rate float64 `db:"rate" json:"rate" bson:"rate"`
LaborExtension float64 `db:"labor_extension" json:"laborExtension" bson:"laborExtension"`
}
I want to get search these record by object id
"gopkg.in/mgo.v2"
func GetMongoSession() (*mgo.Session, error) {
if mgoSession == nil {
var err error
mgoSession, err = mgo.Dial(mongoConnectionUrl)
if err != nil {
return nil, err
}
}
return mgoSession.Clone(), nil
}
func GetJobByID(objID string) (models.RhinoJobs, error) {
var job models.RhinoJobs
s, err := commons.GetMongoSession()
if err != nil {
errMsg := "error occurred while creating mongoDB connection stack:" + err.Error()
print(err.Error())
return job, errors.New(errMsg)
}
defer s.Close()
err = s.DB("rhino").C("jobs").FindId(bson.ObjectIdHex("5a2a75f777e864d018131a59")).One(&job)
if err != nil {
print(err.Error())
errMsg := "error occurred while getting data :" + err.Error()
return job, errors.New(errMsg)
}
return job, nil
}
But when I try to get all collection records by following code it works fine
err := s.DB("rhino").C("jobs").Find(nil).All(&jobs)
I also check following SO Q&A but didn't work
Querying mongodb from golang using the _id stored in an array
How to find by id in golang and mongodb
Cannot retrieve "_id" value using mgo with golang
解决方案
I had the exact same problem, my issue was that I recently switched to the new mgo fork (which is being actively developed) and I mixed up dependencies.
I basically used mgo from globalsign TOGETHER with the old bson from gopkg.in. Please check your dependencies!
"github.com/globalsign/mgo"
"gopkg.in/mgo.v2/bson"
This is wrong!!
Instead it should be:
"github.com/globalsign/mgo"
"github.com/globalsign/mgo/bson"
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