On updates
gorm doesnt update boolean type to false
. By default it updates to true
, but when i try to update to false
not changes. I dont see any errors also. What can be the issue ?
type Attendee struct {
ID uint `gorm:"primary_key" gorm:"AUTO_INCREMENT" json:"id,omitempty" mapstructure:"id" csv:"ID"`
Email string `json:"email,omitempty" mapstructure:"email" csv:"Email,required"`
ShowDirectory bool `json:"show_directory,omitempty" gorm:"default:true" mapstructure:"show_directory" csv:"-"`
}
var attendee Attendee
// JSON.unmarshal lines here for the &attendee
if err := service.DB.Model(&attendee).Updates(Attendee{
Email: attendee.Email,
ShowDirectory: false
}).Error; err != nil {
return Attendee{}, err
}
Alternate Solution:
This works, but I am updating multiple attributies. So, I cant use this.
att := Attendee{ID: 1}
service.DB.Model(&att).Update("ShowDirectory", false)
Another convenient way would be making that field as a pointer.
NOTE all fields having a zero value, like 0, '', false or other zero values, won’t be saved into the database but will use its default value. If you want to avoid this, consider using a pointer type or scanner/valuerLink
In your case, the model would look like:
type Attendee struct {
ID uint `gorm:"primary_key" gorm:"AUTO_INCREMENT" json:"id,omitempty" mapstructure:"id" csv:"ID"`
Email string `json:"email,omitempty" mapstructure:"email" csv:"Email,required"`
ShowDirectory *bool `json:"show_directory,omitempty" gorm:"default:true" mapstructure:"show_directory" csv:"-"`
}
As @mkopriva mentioned, by GORM Documentation
// Update attributes with `struct`, will only update non-zero fields db.Model(&user).Updates(User{Name: "hello", Age: 18, Active: false}) // UPDATE users SET name='hello', age=18, updated_at = '2013-11-17 > 21:34:10' WHERE id = 111; // Update attributes with `map` db.Model(&user).Updates(map[string]interface{}{"name": "hello", "age": 18, "actived": false}) // UPDATE users SET name='hello', age=18, actived=false, updated_at='2013-11-17 21:34:10' WHERE id=111;
NOTE When update with struct, GORM will only update non-zero fields, you might want to use
map
to update attributes or useSelect
to specify fields to update
Solved:
if err := service.DB.Model(&attendee).Updates(map[string]interface{}{
"Email": attendee.Email,
"ShowDirectory": false
}).Error; err != nil {
return Attendee{}, err
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With