英文:
How to remove a single document from MongoDB using Go
问题
你好！以下是你要翻译的内容：
我是Go语言和MongoDB的新手。
如何从MongoDB的集合中删除一个由"name"标识的单个文档？
提前感谢！
英文:
I am new in golang and MongoDb.
How can I delete a single document identified by "name" from a collection in MongoDB?
Thanks in Advance
答案1
得分: 8
以下是代码的中文翻译：
下面的示例演示了如何从localhost上的test数据库的people集合中删除一个名为“Foo Bar”的文档，它使用API中的**Remove()**方法：
// 获取会话
session, err := mgo.Dial("localhost")
if err != nil {
fmt.Printf("连接失败 %v\n", err)
os.Exit(1)
}
defer session.Close()
// 每次访问都进行错误检查
session.SetSafe(&mgo.Safe{})
// 获取集合
collection := session.DB("test").C("people")
// 删除记录
err = collection.Remove(bson.M{"name": "Foo Bar"})
if err != nil {
fmt.Printf("删除失败 %v\n", err)
os.Exit(1)
}
英文:
The following example demonstrates how to delete a single document with the name "Foo Bar" from a people collection in test database on localhost, it uses the Remove() method from the API:
// Get session
session, err := mgo.Dial("localhost")
if err != nil {
fmt.Printf("dial fail %v\n", err)
os.Exit(1)
}
defer session.Close()
// Error check on every access
session.SetSafe(&mgo.Safe{})
// Get collection
collection := session.DB("test").C("people")
// Delete record
err = collection.Remove(bson.M{"name": "Foo Bar"})
if err != nil {
fmt.Printf("remove fail %v\n", err)
os.Exit(1)
}
答案2
得分: 6
MongoDB官方支持golang。这里是一个从MongoDB中删除项目的示例：
// 假设您已经设置了MongoDB客户端
collection := client.Database("database_name").Collection("collection_hero")
deleteResult, _ := collection.DeleteOne(context.TODO(), bson.M{"_id":
primitive.ObjectIDFromHex("_id")})
if deleteResult.DeletedCount == 0 {
log.Fatal("删除一个英雄时出错", err)
}
return deleteResult.DeletedCount
了解更多信息，请访问：https://www.mongodb.com/blog/post/mongodb-go-driver-tutorial
英文:
MongoDB officially supports golang. Here is a demostration of deleting an item from MongoDB:
// Assuming you've setup your mongoDB client
collection := client.Database("database_name").Collection("collection_hero")
deleteResult, _ := collection.DeleteOne(context.TODO(), bson.M{"_id":
primitive.ObjectIDFromHex("_id")})
if deleteResult.DeletedCount == 0 {
log.Fatal("Error on deleting one Hero", err)
}
return deleteResult.DeletedCount
For more information visit: https://www.mongodb.com/blog/post/mongodb-go-driver-tutorial
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