Golang boolean not detected on PATCH

In Golang programming, the problem of boolean value not detected on PATCH is a common mistake. This error may cause the program to not function properly or produce unexpected results. PHP editor Baicao will introduce the causes and solutions to this problem in this article to help readers quickly solve this trouble. Whether you are a beginner or an experienced developer, this article will provide you with useful guidance and advice to make your Golang code more robust and reliable.

Question content

I am trying to make an application that indicates whether the client is active. If I manually set the clientactive boolean to false, I can successfully convert it to true. But if true, it will not be set to false. I'm using gofiber and gorm

model/client.go

type client struct {
gorm.model
slug           string `json:"slug" gorm:"unique"`
clientname     string `json:"client_name"`
address        string `json:"address,omitempty"`
address2       string `json:"address_2,omitempty" gorm:"null"`
phone          string `json:"phone" gorm:"null"`
primaryemail   string `json:"primary_email" gorm:"null"`
secondaryemail string `json:"secondary_email" gorm:"null"`
clientactive bool `json:"client_active" gorm:"default:true"`
contacts     []contact
devices      []device
}

Handler/clienthandler.go

func ClientUpdate(c \*fiber.Ctx) error {
slug := c.Params("slug")

    var data models.Client
    
    err := c.BodyParser(&data)
    if err != nil {
        return err
    }
    
    // todo: the ClientActive variable will set as true, but never false
    client := &models.Client{
        ClientName:     data.ClientName,
        Address:        data.Address,
        Address2:       data.Address2,
        Phone:          data.Phone,
        PrimaryEmail:   data.PrimaryEmail,
        SecondaryEmail: data.SecondaryEmail,
        ClientActive:   data.ClientActive,
    }
    
    err = database.DB.Model(&data).Where("slug = ?", slug).Updates(&client).Error
    if err != nil {
        return err
    }
    
    return c.JSON(client)

}

All other rows update without issue. The only problem is the clientactive boolean.

The complete code is available at https://github.com/simpleittools/assetapi

I have confirmed that the data is being sent as a boolean value. I ran fmt.prtintln(client) both before and after the database input and it does correctly display false.

I don't get any errors during this process.

Solution

gorm default value documentation says:

For fields with defined default values, any zero value (e.g. 0, '', false) will not be saved to the database, you may need to use pointer types or scanner/valuer to avoid this

Fixed by changing field type to *bool:

type Client struct {
    ⋮
    ClientActive *bool `json:"client_active" gorm:"default:true"`
    ⋮
}

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