You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
152 lines
5.2 KiB
152 lines
5.2 KiB
Package validator
|
|
================
|
|
[](https://travis-ci.org/bluesuncorp/validator)
|
|
[](https://coveralls.io/r/bluesuncorp/validator?branch=v5)
|
|
[](https://godoc.org/gopkg.in/bluesuncorp/validator.v5)
|
|
|
|
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.v5
|
|
|
|
or to update
|
|
|
|
go get -u gopkg.in/bluesuncorp/validator.v5
|
|
|
|
Then import the validator package into your own code.
|
|
|
|
import "gopkg.in/bluesuncorp/validator.v5"
|
|
|
|
Usage and documentation
|
|
------
|
|
|
|
Please see http://godoc.org/gopkg.in/bluesuncorp/validator.v5 for detailed usage docs.
|
|
|
|
##### Example:
|
|
```go
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"gopkg.in/bluesuncorp/validator.v5"
|
|
)
|
|
|
|
// 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() {
|
|
|
|
validate = validator.New("validate", validator.BakedInValidators)
|
|
|
|
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 *StructErrors
|
|
errs := validate.Struct(user)
|
|
|
|
if errs != nil {
|
|
|
|
// err will be of type *FieldError
|
|
err := errs.Errors["Age"]
|
|
fmt.Println(err.Error()) // output: Field validation for "Age" failed on the "lte" tag
|
|
fmt.Println(err.Field) // output: Age
|
|
fmt.Println(err.Tag) // output: lte
|
|
fmt.Println(err.Kind) // output: uint8
|
|
fmt.Println(err.Type) // output: uint8
|
|
fmt.Println(err.Param) // output: 130
|
|
fmt.Println(err.Value) // output: 135
|
|
|
|
// or if you prefer you can use the Flatten function
|
|
// NOTE: I find this usefull when using a more hard static approach of checking field errors.
|
|
// The above, is best for passing to some generic code to say parse the errors. i.e. I pass errs
|
|
// to a routine which loops through the errors, creates and translates the error message into the
|
|
// users locale and returns a map of map[string]string // field and error which I then use
|
|
// within the HTML rendering.
|
|
|
|
flat := errs.Flatten()
|
|
fmt.Println(flat) // output: map[Age:Field validation for "Age" failed on the "lte" tag Addresses[0].Address.City:Field validation for "City" failed on the "required" tag]
|
|
err = flat["Addresses[0].Address.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
|
|
```go
|
|
$ go test -cpu=4 -bench=. -benchmem=true
|
|
PASS
|
|
BenchmarkValidateField-4 3000000 436 ns/op 192 B/op 2 allocs/op
|
|
BenchmarkValidateStructSimple-4 500000 2863 ns/op 784 B/op 13 allocs/op
|
|
BenchmarkTemplateParallelSimple-4 500000 3044 ns/op 784 B/op 13 allocs/op
|
|
BenchmarkValidateStructLarge-4 100000 15226 ns/op 4853 B/op 74 allocs/op
|
|
BenchmarkTemplateParallelLarge-4 100000 14637 ns/op 4856 B/op 74 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.
|
|
|