如果数组包含匹配值,则查找 mgo 文档
Find mgo document if array contains matching value
我的 API 中有以下功能以检查用户是否拥有相关文档
type User struct {
Id bson.ObjectId `bson:"_id,omitempty" json:"id"`
Name string `form:"name" bson:"name,omitempty" json:"name,omitempty"`
Password string `form:"password" bson:"password,omitempty" json:"-" binding:"required"`
Email string `form:"email" bson:"email,omitempty" json:"email" binding:"required"`
Artists []bson.ObjectId `form:"artists" bson:"artists,omitempty" json:"artists" inline`
ContentFeed []bson.ObjectId `form:"content_feed" bson:"content_feed,omitempty" json:"content_feed" inline`
Location string `form:"user_location" bson:"user_location,omitempty" json:"user_location,omitempty"`
TopTracks []bson.ObjectId `form:"top_tracks" bson:"top_tracks" json:"top_tracks" inline`
Avatar string `form:"avatar" bson:"avatar,omitempty" json:"avatar,omitempty"`
BgImg string `form:"bg_img" bson:"bg_img,omitempty" json:"bg_img,omitempty"`
}
// Get artist
// This doesn't actual get the full artist object, this just checks that
// the artist id given is stores against the given users list of artists
func (repo *UserRepo) GetArtist(user string, artist string) (bool, error) {
userData := &User{}
fmt.Println(user)
err := repo.collection.Find(bson.M{"_id": user, "artists": bson.M{"$in": []bson.ObjectId{bson.ObjectIdHex(artist)}}}).One(&userData)
if err != nil {
fmt.Println(err)
return false, err
}
return true, err
}
然而它 returns 一个打印 'not found' 的错误,尽管在我检查给定用户的艺术家 ID 列表时给它两个确实存在并且相关的 ID。
也许我错了,但是 Id
被定义为 bson.ObjectId
而您正在以字符串形式查询它。尝试替换
err := repo.collection.Find(bson.M{"_id": user, "artists": bson.M{"$in": []bson.ObjectId{bson.ObjectIdHex(artist)}}}).One(&userData)
和
err := repo.collection.Find(bson.M{"_id": bson.ObjectIdHex(user), "artists": bson.M{"$in": []bson.ObjectId{bson.ObjectIdHex(artist)}}}).One(&userData)
我的 API 中有以下功能以检查用户是否拥有相关文档
type User struct {
Id bson.ObjectId `bson:"_id,omitempty" json:"id"`
Name string `form:"name" bson:"name,omitempty" json:"name,omitempty"`
Password string `form:"password" bson:"password,omitempty" json:"-" binding:"required"`
Email string `form:"email" bson:"email,omitempty" json:"email" binding:"required"`
Artists []bson.ObjectId `form:"artists" bson:"artists,omitempty" json:"artists" inline`
ContentFeed []bson.ObjectId `form:"content_feed" bson:"content_feed,omitempty" json:"content_feed" inline`
Location string `form:"user_location" bson:"user_location,omitempty" json:"user_location,omitempty"`
TopTracks []bson.ObjectId `form:"top_tracks" bson:"top_tracks" json:"top_tracks" inline`
Avatar string `form:"avatar" bson:"avatar,omitempty" json:"avatar,omitempty"`
BgImg string `form:"bg_img" bson:"bg_img,omitempty" json:"bg_img,omitempty"`
}
// Get artist
// This doesn't actual get the full artist object, this just checks that
// the artist id given is stores against the given users list of artists
func (repo *UserRepo) GetArtist(user string, artist string) (bool, error) {
userData := &User{}
fmt.Println(user)
err := repo.collection.Find(bson.M{"_id": user, "artists": bson.M{"$in": []bson.ObjectId{bson.ObjectIdHex(artist)}}}).One(&userData)
if err != nil {
fmt.Println(err)
return false, err
}
return true, err
}
然而它 returns 一个打印 'not found' 的错误,尽管在我检查给定用户的艺术家 ID 列表时给它两个确实存在并且相关的 ID。
也许我错了,但是 Id
被定义为 bson.ObjectId
而您正在以字符串形式查询它。尝试替换
err := repo.collection.Find(bson.M{"_id": user, "artists": bson.M{"$in": []bson.ObjectId{bson.ObjectIdHex(artist)}}}).One(&userData)
和
err := repo.collection.Find(bson.M{"_id": bson.ObjectIdHex(user), "artists": bson.M{"$in": []bson.ObjectId{bson.ObjectIdHex(artist)}}}).One(&userData)