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example_test.go
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/
example_test.go
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package govalidator_test
import (
"errors"
"fmt"
"github.com/swordlib/govalidator"
)
type person struct {
FirstName string
}
func Example() {
gv := govalidator.New(govalidator.RulesMap{
"FirstName": {
{
Required: true,
},
{
Validator: func(rule *govalidator.Rule, value interface{}, target interface{}) error {
if v := value.(string); v != "Alice" {
return errors.New("FirstName must be Alice")
}
return nil
},
},
},
})
fmt.Println(gv.StructFirst(&person{
FirstName: "",
}))
fmt.Println(gv.StructFirst(&person{
FirstName: "Bob",
}))
fmt.Println(gv.StructFirst(&person{
FirstName: "Alice",
}))
custom := govalidator.New(govalidator.RulesMap{
"FirstName": {
{
Required: true,
Message: "Please input your firstName",
},
},
})
fmt.Println(custom.StructFirst(&person{}))
// Output:
// FirstName is required
// FirstName must be Alice
// <nil>
// Please input your firstName
}