Dean Karn
9e60f7d11b
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9 years ago | |
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examples | 9 years ago | |
.gitignore | 10 years ago | |
LICENSE | 10 years ago | |
README.md | 9 years ago | |
baked_in.go | 9 years ago | |
benchmarks_test.go | 9 years ago | |
doc.go | 9 years ago | |
examples_test.go | 9 years ago | |
regexes.go | 9 years ago | |
validator.go | 9 years ago | |
validator_test.go | 9 years ago |
README.md
Package validator
Package validator implements value validations for structs and individual fields based on tags.
It has the following unique features:
- Cross Field and Cross Struct validations.
- Slice, Array and Map diving, which allows any or all levels of a multidimensional field to be validated.
- Handles type interface by determining it's underlying type prior to validation.
Installation
Use go get.
go get gopkg.in/bluesuncorp/validator.v6
or to update
go get -u gopkg.in/bluesuncorp/validator.v6
Then import the validator package into your own code.
import "gopkg.in/bluesuncorp/validator.v6"
Usage and documentation
Please see http://godoc.org/gopkg.in/bluesuncorp/validator.v6 for detailed usage docs.
Example:
package main
import (
"fmt"
"gopkg.in/bluesuncorp/validator.v6"
)
// User contains user information
type User struct {
FirstName string `validate:"required"`
LastName string `validate:"required"`
Age uint8 `validate:"gte=0,lte=130"`
Email string `validate:"required,email"`
FavouriteColor string `validate:"hexcolor|rgb|rgba"`
Addresses []*Address `validate:"required,dive,required"` // a person can have a home and cottage...
}
// Address houses a users address information
type Address struct {
Street string `validate:"required"`
City string `validate:"required"`
Planet string `validate:"required"`
Phone string `validate:"required"`
}
var validate *validator.Validate
func main() {
config := validator.Config{
TagName: "validate",
ValidationFuncs: validator.BakedInValidators,
}
validate = validator.New(config)
address := &Address{
Street: "Eavesdown Docks",
Planet: "Persphone",
Phone: "none",
}
user := &User{
FirstName: "Badger",
LastName: "Smith",
Age: 135,
Email: "Badger.Smith@gmail.com",
FavouriteColor: "#000",
Addresses: []*Address{address},
}
// returns nil or ValidationErrors ( map[string]*FieldError )
errs := validate.Struct(user)
if errs != nil {
fmt.Println(errs) // output: Key: "User.Age" Error:Field validation for "Age" failed on the "lte" tag
// Key: "User.Addresses[0].City" Error:Field validation for "City" failed on the "required" tag
err := errs["User.Addresses[0].City"]
fmt.Println(err.Field) // output: City
fmt.Println(err.Tag) // output: required
fmt.Println(err.Kind) // output: string
fmt.Println(err.Type) // output: string
fmt.Println(err.Param) // output:
fmt.Println(err.Value) // output:
// from here you can create your own error messages in whatever language you wish
return
}
// save user to database
}
Benchmarks
Run on MacBook Pro (Retina, 15-inch, Late 2013) 2.6 GHz Intel Core i7 16 GB 1600 MHz DDR3
NOTE: allocations for structs are up from v5, however ns/op for parallel operations are way down. It was a decicion not to cache struct info because although it reduced allocation to v5 levels, it hurt parallel performance too much.
$ go test -cpu=4 -bench=. -benchmem=true
PASS
BenchmarkField-4 5000000 314 ns/op 16 B/op 1 allocs/op
BenchmarkFieldOrTag-4 500000 2425 ns/op 20 B/op 2 allocs/op
BenchmarkStructSimple-4 500000 3117 ns/op 553 B/op 14 allocs/op
BenchmarkStructSimpleParallel-4 1000000 1149 ns/op 553 B/op 14 allocs/op
BenchmarkStructComplex-4 100000 19580 ns/op 3230 B/op 102 allocs/op
BenchmarkStructComplexParallel-4 200000 6686 ns/op 3232 B/op 102 allocs/op
How to Contribute
There will always be a development branch for each version i.e. v1-development
. In order to contribute,
please make your pull requests against those branches.
If the changes being proposed or requested are breaking changes, please create an issue, for discussion or create a pull request against the highest development branch for example this package has a v1 and v1-development branch however, there will also be a v2-development brach even though v2 doesn't exist yet.
I strongly encourage everyone whom creates a custom validation function to contribute them and help make this package even better.
License
Distributed under MIT License, please see license file in code for more details.