How do I store the data from DTO Gorm-CodePudding

I am using golang fiber and GORM. I am trying to store the data from DTO. For example, I have created a post entity and post dto like below.

type User struct {
    gorm.Model
    Name string
    Address string
    Phone string
}

This is my DTO

type PostDto struct {
    Name string `json:"name"`
    Address string `json:"address"`
    Phone string `json:"phone"`
}

I am trying to store the data like below

var postDto models.PostDto
c.BodyParser(&postDto)
err := database.DB.Model(models.User{}).Create(&postDto).Error
fmt.Println(err.Error())

But I am getting the below error

panic: reflect: call of reflect.Value.Field on string Value

Could anyone help to resolve this issue?

Thanks in advance

CodePudding user response：

I don't know what you are doing? this is go language, not java, why do you define two structs?

You can use tag to complete that you want.

type User struct {
    gorm.Model `json:"-" gorm:"-"`
    Name string `json:"name" gorm:"column:name"`
    Address string `json:"address" gorm:"column:address"`
    Phone string `json:"phone"  gorm:"column:phone"`
}


var user User
err := database.DB.Model(User{}).Create(&user).Error
fmt.Println(err.Error())

CodePudding user response：

User and PostDto structures are not same, using one model to get and save data from another is wrong.

Either create a function to convert from PostDto to User, adn use its output in Create

func (postDTo PostDTo) ToUser() *User {
    return &User{Name: postDTo.Name, Address: postDTo.Address, Phone: postDTo.Phone}
}

OR, as User and PostDto structs are so similar, add json ignore to gorm.Model in User and use it instead of PostDto

type User struct {
    gorm.Model `json:"-"`
    Name       string `json:"name"`
    Address    string `json:"address"`
    Phone      string `json:"phone"`
}


var postData models.User
c.BodyParser(&postData)