entc/gen: remove FromRows decoding

entc/integration/template/ent/group.go

@@ -23,24 +23,6 @@ type Group struct {
 	MaxUsers int `json:"max_users,omitempty"`
 }
 
-// FromRows scans the sql response data into Group.
-func (gr *Group) FromRows(rows *sql.Rows) error {
-	var scangr struct {
-		ID       int
-		MaxUsers sql.NullInt64
-	}
-	// the order here should be the same as in the `group.Columns`.
-	if err := rows.Scan(
-		&scangr.ID,
-		&scangr.MaxUsers,
-	); err != nil {
-		return err
-	}
-	gr.ID = scangr.ID
-	gr.MaxUsers = int(scangr.MaxUsers.Int64)
-	return nil
-}
-
 // scanValues returns the types for scanning values from sql.Rows.
 func (*Group) scanValues() []interface{} {
 	return []interface{}{
@@ -101,18 +83,6 @@ func (gr *Group) String() string {
 // Groups is a parsable slice of Group.
 type Groups []*Group
 
-// FromRows scans the sql response data into Groups.
-func (gr *Groups) FromRows(rows *sql.Rows) error {
-	for rows.Next() {
-		scangr := &Group{}
-		if err := scangr.FromRows(rows); err != nil {
-			return err
-		}
-		*gr = append(*gr, scangr)
-	}
-	return nil
-}
-
 func (gr Groups) config(cfg config) {
 	for _i := range gr {
 		gr[_i].config = cfg

entc/integration/template/ent/pet.go

@@ -26,30 +26,6 @@ type Pet struct {
 	LicensedAt *time.Time `json:"licensed_at,omitempty"`
 }
 
-// FromRows scans the sql response data into Pet.
-func (pe *Pet) FromRows(rows *sql.Rows) error {
-	var scanpe struct {
-		ID         int
-		Age        sql.NullInt64
-		LicensedAt sql.NullTime
-	}
-	// the order here should be the same as in the `pet.Columns`.
-	if err := rows.Scan(
-		&scanpe.ID,
-		&scanpe.Age,
-		&scanpe.LicensedAt,
-	); err != nil {
-		return err
-	}
-	pe.ID = scanpe.ID
-	pe.Age = int(scanpe.Age.Int64)
-	if scanpe.LicensedAt.Valid {
-		pe.LicensedAt = new(time.Time)
-		*pe.LicensedAt = scanpe.LicensedAt.Time
-	}
-	return nil
-}
-
 // scanValues returns the types for scanning values from sql.Rows.
 func (*Pet) scanValues() []interface{} {
 	return []interface{}{
@@ -126,18 +102,6 @@ func (pe *Pet) String() string {
 // Pets is a parsable slice of Pet.
 type Pets []*Pet
 
-// FromRows scans the sql response data into Pets.
-func (pe *Pets) FromRows(rows *sql.Rows) error {
-	for rows.Next() {
-		scanpe := &Pet{}
-		if err := scanpe.FromRows(rows); err != nil {
-			return err
-		}
-		*pe = append(*pe, scanpe)
-	}
-	return nil
-}
-
 func (pe Pets) config(cfg config) {
 	for _i := range pe {
 		pe[_i].config = cfg

entc/integration/template/ent/user.go

@@ -23,24 +23,6 @@ type User struct {
 	Name string `json:"name,omitempty"`
 }
 
-// FromRows scans the sql response data into User.
-func (u *User) FromRows(rows *sql.Rows) error {
-	var scanu struct {
-		ID   int
-		Name sql.NullString
-	}
-	// the order here should be the same as in the `user.Columns`.
-	if err := rows.Scan(
-		&scanu.ID,
-		&scanu.Name,
-	); err != nil {
-		return err
-	}
-	u.ID = scanu.ID
-	u.Name = scanu.Name.String
-	return nil
-}
-
 // scanValues returns the types for scanning values from sql.Rows.
 func (*User) scanValues() []interface{} {
 	return []interface{}{
@@ -111,18 +93,6 @@ func (u *User) String() string {
 // Users is a parsable slice of User.
 type Users []*User
 
-// FromRows scans the sql response data into Users.
-func (u *Users) FromRows(rows *sql.Rows) error {
-	for rows.Next() {
-		scanu := &User{}
-		if err := scanu.FromRows(rows); err != nil {
-			return err
-		}
-		*u = append(*u, scanu)
-	}
-	return nil
-}
-
 func (u Users) config(cfg config) {
 	for _i := range u {
 		u[_i].config = cfg