获取数据库中的所有项目

Question

我正在尝试使用它从我的数据库中获取一组项目，gorm它工作正常，我能够检索数据，但我只在数组中获取一个项目，而还有更多。这是我检索数组的代码。模型.gotype Address struct {    ID        uuid.UUID  `json:"id" gorm:"primary_key;unique;not null"`    Line      string     `gorm:"size:255;not null;column:line" json:"line"`    Hostel    string     `gorm:"size:255;not null;column:hostel" json:"hostel"`    CreatedAt time.Time  `gorm:"default:CURRENT_TIMESTAMP;column:createdAt" json:"createdAt"`    UpdatedAt time.Time  `gorm:"default:CURRENT_TIMESTAMP;column:updatedAt" json:"updatedAt"`    DeletedAt *time.Time `sql:"index;column:deletedAt" json:"deletedAt"`}type Addresses []Address数据库.gotype DbAddress struct {    *model.Address}func (address *DbAddress) Get(db *gorm.DB) ([]model.Address, *errors.Error) {    var err error    addr := []model.Address{}    err = db.Debug().Model(model.Address{}).Limit(100).Take(&addr).Error    if gorm.IsRecordNotFoundError(err) {        return nil, errors.NewNotFoundError(fmt.Sprintf("Address not found: %s", err.Error()))    }    if err != nil {        return nil, errors.NewBadRequestError(fmt.Sprintf("error when trying to get Address: %s", err.Error()))    }    return addr, nil}服务.gofunc GetAddress() (model.Addresses, *errors.Error) {    result := database.DbAddress{Address: &model.Address{}}    return result.Get(database.DB)}控制器.gofunc GetAddress(c *gin.Context) {    address, getErr := services.GetAddress()    if getErr != nil {        res.ResponseJSON(c, getErr.Status, nil, true, getErr.Message)        return    }    res.ResponseJSON(c, http.StatusFound, address, false, "successfully got address data")}

Answer 1

使用Find而不是Take.

// Get first record, order by primary key

db.First(&user)

//// SELECT * FROM users ORDER BY id LIMIT 1;

// Get one record, no specified order

db.Take(&user)

//// SELECT * FROM users LIMIT 1;

// Get last record, order by primary key

db.Last(&user)

//// SELECT * FROM users ORDER BY id DESC LIMIT 1;

// Get all records

db.Find(&users)

//// SELECT * FROM users;

// Get record with primary key (only works for integer primary key)

db.First(&user, 10)

//// SELECT * FROM users WHERE id = 10;

有关更多详细信息，请参阅：https ://gorm.io/docs/query.html