Mixing
Convert bool to tinyint golang
I am using the latest version of xorm and want to create a simple go struct as follows:
types myStruct struct {
isDeleted bool `xorm:"'isDeleted' tinyint(3)"`
}
I know the bool type in go evaluates to true and false, but I need to map it to a mySql database where the values are tinyint(3) and 1 maps to true and 0 to false. In the example above no matter what my post requests look like isDeleted always evaluates to 0. Thanks in advance for any advice on this issue. This https://github.com/go-xorm/xorm/issues/673 may provide some context.
go go-xorm
asked Nov 21 '18 at 17:16
00robinette00robinette
7817
add a comment |
I am using the latest version of xorm and want to create a simple go struct as follows:
types myStruct struct {
isDeleted bool `xorm:"'isDeleted' tinyint(3)"`
}
I know the bool type in go evaluates to true and false, but I need to map it to a mySql database where the values are tinyint(3) and 1 maps to true and 0 to false. In the example above no matter what my post requests look like isDeleted always evaluates to 0. Thanks in advance for any advice on this issue. This https://github.com/go-xorm/xorm/issues/673 may provide some context.
go go-xorm
asked Nov 21 '18 at 17:16
00robinette00robinette
7817
Abooleanin MySQL IS atinyint. Any particular reason the column was specified as atinyintinstead of aboolean? This could have been avoided by having the database handle it.
– RayfenWindspear
Nov 21 '18 at 17:41
add a comment |
I am using the latest version of xorm and want to create a simple go struct as follows:
types myStruct struct {
isDeleted bool `xorm:"'isDeleted' tinyint(3)"`
}
I know the bool type in go evaluates to true and false, but I need to map it to a mySql database where the values are tinyint(3) and 1 maps to true and 0 to false. In the example above no matter what my post requests look like isDeleted always evaluates to 0. Thanks in advance for any advice on this issue. This https://github.com/go-xorm/xorm/issues/673 may provide some context.
go go-xorm
asked Nov 21 '18 at 17:16
00robinette00robinette
7817
I am using the latest version of xorm and want to create a simple go struct as follows:
types myStruct struct {
isDeleted bool `xorm:"'isDeleted' tinyint(3)"`
}
I know the bool type in go evaluates to true and false, but I need to map it to a mySql database where the values are tinyint(3) and 1 maps to true and 0 to false. In the example above no matter what my post requests look like isDeleted always evaluates to 0. Thanks in advance for any advice on this issue. This https://github.com/go-xorm/xorm/issues/673 may provide some context.
go go-xorm
go go-xorm
asked Nov 21 '18 at 17:16
00robinette00robinette
7817
asked Nov 21 '18 at 17:16
00robinette00robinette
7817
asked Nov 21 '18 at 17:16
00robinette00robinette
7817
asked Nov 21 '18 at 17:16
00robinette00robinette
7817
asked Nov 21 '18 at 17:16
00robinette00robinette
7817
7817
Abooleanin MySQL IS atinyint. Any particular reason the column was specified as atinyintinstead of aboolean? This could have been avoided by having the database handle it.
– RayfenWindspear
Nov 21 '18 at 17:41
add a comment |
Abooleanin MySQL IS atinyint. Any particular reason the column was specified as atinyintinstead of aboolean? This could have been avoided by having the database handle it.
– RayfenWindspear
Nov 21 '18 at 17:41
A
boolean in MySQL IS a tinyint. Any particular reason the column was specified as a tinyint instead of a boolean? This could have been avoided by having the database handle it.– RayfenWindspear
Nov 21 '18 at 17:41
A
boolean in MySQL IS a tinyint. Any particular reason the column was specified as a tinyint instead of a boolean? This could have been avoided by having the database handle it.– RayfenWindspear
Nov 21 '18 at 17:41
add a comment |
1 Answer
1
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oldest
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I'm not sure what/if xorm can do about it, but you can just create a type and implement the Valuer and Scanner interfaces for it. Here is an example I did a pull request for using a bit(1) for a bool.
https://github.com/jmoiron/sqlx/blob/master/types/types.go#L152
For an integer, you would just return the int instead of a byte containing the int. Like so:
type IntBool bool
// Value implements the driver.Valuer interface,
// and turns the IntBool into an integer for MySQL storage.
func (i IntBool) Value() (driver.Value, error) {
if i {
return 1, nil
}
return 0, nil
}
// Scan implements the sql.Scanner interface,
// and turns the int incoming from MySQL into an IntBool
func (i *IntBool) Scan(src interface{}) error {
v, ok := src.(int)
if !ok {
return errors.New("bad int type assertion")
}
*i = v == 1
return nil
}
Then your struct would just use the new type
type myStruct struct {
isDeleted IntBool `xorm:"'isDeleted' tinyint(3)"`
}
But, again, is there any particular reason you declared this boolean value as a tinyint? MySQL has a boolean type and things would just work.
answered Nov 21 '18 at 18:09
RayfenWindspearRayfenWindspear
3,7331430
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I'm not sure what/if xorm can do about it, but you can just create a type and implement the Valuer and Scanner interfaces for it. Here is an example I did a pull request for using a bit(1) for a bool.
https://github.com/jmoiron/sqlx/blob/master/types/types.go#L152
For an integer, you would just return the int instead of a byte containing the int. Like so:
type IntBool bool
// Value implements the driver.Valuer interface,
// and turns the IntBool into an integer for MySQL storage.
func (i IntBool) Value() (driver.Value, error) {
if i {
return 1, nil
}
return 0, nil
}
// Scan implements the sql.Scanner interface,
// and turns the int incoming from MySQL into an IntBool
func (i *IntBool) Scan(src interface{}) error {
v, ok := src.(int)
if !ok {
return errors.New("bad int type assertion")
}
*i = v == 1
return nil
}
Then your struct would just use the new type
type myStruct struct {
isDeleted IntBool `xorm:"'isDeleted' tinyint(3)"`
}
But, again, is there any particular reason you declared this boolean value as a tinyint? MySQL has a boolean type and things would just work.
answered Nov 21 '18 at 18:09
RayfenWindspearRayfenWindspear
3,7331430
add a comment |
I'm not sure what/if xorm can do about it, but you can just create a type and implement the Valuer and Scanner interfaces for it. Here is an example I did a pull request for using a bit(1) for a bool.
https://github.com/jmoiron/sqlx/blob/master/types/types.go#L152
For an integer, you would just return the int instead of a byte containing the int. Like so:
type IntBool bool
// Value implements the driver.Valuer interface,
// and turns the IntBool into an integer for MySQL storage.
func (i IntBool) Value() (driver.Value, error) {
if i {
return 1, nil
}
return 0, nil
}
// Scan implements the sql.Scanner interface,
// and turns the int incoming from MySQL into an IntBool
func (i *IntBool) Scan(src interface{}) error {
v, ok := src.(int)
if !ok {
return errors.New("bad int type assertion")
}
*i = v == 1
return nil
}
Then your struct would just use the new type
type myStruct struct {
isDeleted IntBool `xorm:"'isDeleted' tinyint(3)"`
}
But, again, is there any particular reason you declared this boolean value as a tinyint? MySQL has a boolean type and things would just work.
answered Nov 21 '18 at 18:09
RayfenWindspearRayfenWindspear
3,7331430
add a comment |
I'm not sure what/if xorm can do about it, but you can just create a type and implement the Valuer and Scanner interfaces for it. Here is an example I did a pull request for using a bit(1) for a bool.
https://github.com/jmoiron/sqlx/blob/master/types/types.go#L152
For an integer, you would just return the int instead of a byte containing the int. Like so:
type IntBool bool
// Value implements the driver.Valuer interface,
// and turns the IntBool into an integer for MySQL storage.
func (i IntBool) Value() (driver.Value, error) {
if i {
return 1, nil
}
return 0, nil
}
// Scan implements the sql.Scanner interface,
// and turns the int incoming from MySQL into an IntBool
func (i *IntBool) Scan(src interface{}) error {
v, ok := src.(int)
if !ok {
return errors.New("bad int type assertion")
}
*i = v == 1
return nil
}
Then your struct would just use the new type
type myStruct struct {
isDeleted IntBool `xorm:"'isDeleted' tinyint(3)"`
}
But, again, is there any particular reason you declared this boolean value as a tinyint? MySQL has a boolean type and things would just work.
answered Nov 21 '18 at 18:09
RayfenWindspearRayfenWindspear
3,7331430
I'm not sure what/if xorm can do about it, but you can just create a type and implement the Valuer and Scanner interfaces for it. Here is an example I did a pull request for using a bit(1) for a bool.
https://github.com/jmoiron/sqlx/blob/master/types/types.go#L152
For an integer, you would just return the int instead of a byte containing the int. Like so:
type IntBool bool
// Value implements the driver.Valuer interface,
// and turns the IntBool into an integer for MySQL storage.
func (i IntBool) Value() (driver.Value, error) {
if i {
return 1, nil
}
return 0, nil
}
// Scan implements the sql.Scanner interface,
// and turns the int incoming from MySQL into an IntBool
func (i *IntBool) Scan(src interface{}) error {
v, ok := src.(int)
if !ok {
return errors.New("bad int type assertion")
}
*i = v == 1
return nil
}
Then your struct would just use the new type
type myStruct struct {
isDeleted IntBool `xorm:"'isDeleted' tinyint(3)"`
}
But, again, is there any particular reason you declared this boolean value as a tinyint? MySQL has a boolean type and things would just work.
answered Nov 21 '18 at 18:09
RayfenWindspearRayfenWindspear
3,7331430
answered Nov 21 '18 at 18:09
RayfenWindspearRayfenWindspear
3,7331430
answered Nov 21 '18 at 18:09
RayfenWindspearRayfenWindspear
3,7331430
answered Nov 21 '18 at 18:09
RayfenWindspearRayfenWindspear
3,7331430
3,7331430
add a comment |
add a comment |
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A
booleanin MySQL IS atinyint. Any particular reason the column was specified as atinyintinstead of aboolean? This could have been avoided by having the database handle it.– RayfenWindspear
Nov 21 '18 at 17:41