英文:
Imported struct from other package is undefined
问题
这是我的初学者问题。我在models/model.go中有这个结构体。
package models
import (
"time"
"gopkg.in/mgo.v2/bson"
)
type Horse struct {
Id bson.ObjectId `bson:"_id,omitempty"`
Title string
Description string
CreatedOn time.Time
Creator string
Visits int
Score int
}
在我的controllers/crud.go中，我试图使用Horse结构体。
package controllers
import (
"html/template"
"log"
"net/http"
"horseapp/models"
)
[...]
var horseStore = make(map[string]Horse) //这里引发了未定义错误
但是当我运行go install horseapp时，我得到了undefined: Horse的错误。
这里有什么问题，如何修复？
英文:
Here is my noobish problem. I have this struct in my models/model.go
package models
import (
"time"
"gopkg.in/mgo.v2/bson"
)
type Horse struct {
Id bson.ObjectId `bson:"_id,omitempty"`
Title string
Description string
CreatedOn time.Time
Creator string
Visits int
Score int
}
And in my controllers/crud.go I'm trying to use Horse struct
package controllers
import (
"html/template"
"log"
"net/http"
"horseapp/models"
)
[...]
var horseStore = make(map[string]Horse) //This raises undefined error
But I get undefined: Horse when I go install horseapp.
What is wrong here and how to fix it?
答案1
得分: 2
使用以下代码：
var horseStore = make(map[string]models.Horse)
当从另一个包中访问标识符时，你总是需要使用包名和一个点作为前缀：package.Identifier。
英文:
Use
var horseStore = make(map[string]models.Horse)
When accessing an identifier from another package you will always have to prefix it with the packages name and a dot: package.Identifier
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