// Passes if the data is a float/int and is greater than the specified integer.
// Note that this is *not* a greater than or equals check, and this only comapres
// floats/ints to a predefined integer specified in your tag.
// Fails if the data is not a float/int or the data is less than or equals the comparator
func GreaterThan(data rules.ValidationData) error {
v, err := helper.ToFloat64(data.Value)
if err != nil {
return rules.ErrInvalid{
ValidationData: data,
Failure: "is not numeric",
}
}
// We should always be provided with a length to validate against
if len(data.Args) == 0 {
return fmt.Errorf("No argument found in the validation struct (eg 'GreaterThan:5')")
}
// Typecast our argument and test
var min float64
if min, err = strconv.ParseFloat(data.Args[0], 64); err != nil {
return err
}
if v < min {
return rules.ErrInvalid{
ValidationData: data,
Failure: fmt.Sprintf("must be greater than %d", min),
}
}
return nil
}
// Checks whether a float or int type is 0. This could mean the data is above *or* below 0.
// Fails if the data isn't a float/int type, or the data is exactly 0.
func NotZero(data rules.ValidationData) error {
v, err := helper.ToFloat64(data.Value)
if err != nil {
return rules.ErrInvalid{
ValidationData: data,
Failure: "is not numeric",
}
}
if v == 0 {
return rules.ErrInvalid{
ValidationData: data,
Failure: "is 0",
}
}
return nil
}