I have proto3/grpc function written in golang. There is a if statement written in a switch that does't see an int32 as a value of 0 when the value is a 0. I print the value before and it's a 0 but the if statement runs anyway. In my code below I have the output in a comment. I know for a int the nil value is a 0. If I place a value for the lname, fname they work as it should. Any help appreciated. Here is my output:
map[fname: lname: email: id:0]
0
id = $1
Here is my code:
func (s *server) GetUsers(ctx context.Context, in *userspb.User) (*userspb.Users, error) {
flds := make(map[string]interface{})
flds["id"] = in.Id // 0
flds["fname"] = in.Fname // "" (empty)
flds["lname"] = in.Lname // "" (empty)
flds["email"] = in.Email // "" (empty)
fmt.Println(flds) //map[lname: email: id:0 fname:]
var where bytes.Buffer
n := 0
for _, v := range flds {
switch v.(type) {
case string:
if v != "" {
n++
}
case int, int32, int64:
if v != 0 {
n++
}
}
}
calledvariables := make([]interface{}, 0)
i := 1
for k, v := range flds {
switch v.(type) {
case string:
if v != "" {
if i != 1 {
where.WriteString(" AND ")
}
ist := strconv.Itoa(i)
where.WriteString(k + " = $" + ist)
calledvariables = append(calledvariables, v)
i++
}
case int, int32, int64, uint32, uint64:
/////// THIS IF STATMENT IS THE ISSUE the ( v is printing the value of 0 and it's in the if statement )
if v != 0 {
fmt.Println(v) // 0
if i != 1 {
where.WriteString(" AND ")
}
ist := strconv.Itoa(i)
where.WriteString(k + " = $" + ist)
calledvariables = append(calledvariables, v)
i++
}
}
}
fmt.Println(where.String()) // id = $1
...