44 lines
922 B
Go
44 lines
922 B
Go
package main
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import (
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"strings"
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// stdlib
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"errors"
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"log"
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// other
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"go.dev.pztrn.name/valiwork"
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)
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const (
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stringValidatorName = "string_validate_things"
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)
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func main() {
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log.Println("Starting validation example...")
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log.Println("WARN: to see additional valiwork output define 'VALIWORK_DEBUG' environment variable and set it to 'true'!")
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//stringToValidate := " I am pretty b@d $tring"
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valiwork.RegisterValidator(stringValidatorName, stringValidator)
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}
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func stringValidator(thing interface{}, optional ...interface{}) []interface{} {
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var errs []interface{}
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stringToValidate, ok := thing.(string)
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if !ok {
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errs = append(errs, errors.New("passed value is not a string"))
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return errs
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}
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// Are string begins with spaces?
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if strings.HasPrefix(stringToValidate, " ") {
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errs = append(errs, errors.New("string begins with space"))
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}
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// Does string contains any special characters?
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return errs
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}
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