query

func Get ¶

func Get[T any](v *T) T

Get removes the pointer used when [goe.Select] get any argument.

Example ¶

for row, err := range goe.Select(&struct {
	User    *string //goe needs a pointer for store the referecent argument
	Role    *string //goe needs a pointer for store the referecent argument
	EndTime **time.Time //if the argument is already a pointer goe needs a pointer to a pointer for store the referecent argument
}{
	User:    &db.User.Name,
	Role:    &db.Role.Name,
	EndTime: &db.UserRole.EndDate,
}).
From(db.User).
Joins(
	join.LeftJoin[int](&db.User.Id, &db.UserRole.UserId),
	join.LeftJoin[int](&db.UserRole.RoleId, &db.Role.Id),
).
OrderByAsc(&db.User.Id).Rows() {
	q = append(q, struct {
		User    string //return model can be different from select model
		Role    string
		EndTime *time.Time
	}{
		User:    query.Get(row.User), //get a empty string if the database returns null
		Role:    query.Get(row.Role), //get a empty string if the database returns null
		EndTime: query.Get(row.EndTime), //EndTime can store nil/null values
	})
}