go-playground/validator

Go Struct and Field validation, including Cross Field and Cross Field Cross Struct validation

Dean Karn

@deankarn

@pomke Once getting that specific I recommend either creating your own custom validation or creations a struct level validation.

Pomke

@pomke

Ok thank you ^_^

Devi

@asldevi

Hi, how can one inject something from application in the custom validation functions ?

Dean Karn

@deankarn

@asldevi You can Register a validation function that accepts context.Context and then use one of the validation functions that accept it eg. validate.StructCtx, but that's if it's dynamic, if looking to embed static logic from the application see here for an example go-playground/validator#462

Devi

@asldevi

thanks @deankarn

Emir Ribić

@ribice

Is this still active

Dean Karn

@deankarn

yes

PhamDuykhang

@PhamDuykhang

Which tag can use for validate a string, i want to validate wich to string "times" and "Money"

Dean Karn

@deankarn

Documentation can be found here with all tags https://godoc.org/gopkg.in/go-playground/validator.v9

At present there is no built in "Money" nor "times" validator due to different locales having to validate differently, but you can create your own validations :)

Just NON

@ivybridge-3c33

I would like to check file upload is matching mime types or file extension, please help
example use :

type Photo struct { 
   Photo string `validate:"mimes=jpeg|bmp|png"`
}

Vaibhav Kumar Chaudhary

@vaibhavkumar049

how to write validate if value can be oneof or nil (not required)?

Roman

@NoMoMoRi_twitter

Hi.
How can i pass additional parameters to the custom validation function?
validator.RegisterValidation("MY_CUSTOM_TAG", MY_CUSTOM_FUNCTION)

Function only accepts validator.FieldLevel

@ivybridge-3c33 use custom tag and RegisterValidation func (https://github.com/go-playground/validator/blob/493dfb6209fcb493fcdbc2a0f14b882f2d53979f/validator_instance.go#L134)

Himanshu

@Himansh70683396_twitter

Can you please help me , I want to implement regex to multiple fields in struct, how can i do that using this package

Himanshu

@Himansh70683396_twitter

@deankarn can u please help me in this

Brandon Lee

@leejh903

Hi, I want to use 'hexadecimal' tag to check correct hex string. But we get value which starts with '0x'. But 'hexadecimal' tag do not accept '0x'. Do I need to create custom validator?

Harinishree-Muniraj

@Harinishree-Muniraj

Hi everyone

is there anyone having idea about cel-go package

I need to create a custom object using cel-go package

Harinishree-Muniraj

@Harinishree-Muniraj

while i am tryong to run cel-go package file using go run filename.go

I am getting go run: cannot run non-main package

error

Narsimham Chelluri

@nchelluri

hi, I'm using gin-gonic and wondering whether I should be using go-playground/validator or my own custom validation func that operates on a model struct. are there any recommendations here? It seems like this repo would do the same thing, but then I'd have to come up with error messages to display to the user

Narsimham Chelluri

@nchelluri

I think I prefer my handwritten validation function

Dean Karn

@deankarn

@nchelluri It’s really up to you and your use case, I think any of the options would work well for you. This package is geared towards rapid application development and code maintainability but ultimately how you use is up to you :)

Narsimham Chelluri

@nchelluri

thank you

Nigel Li

@nigelis

Hi, when I use omitempty as the second tag for a string pointer field, the program panic.

Here is the issue go-playground/validator#654
Here is the PR go-playground/validator#657
Would anyone like to help me with this issue, or correct my usage?

andig

@andig

#664 has just been added complete with tests. Would be great addition to merge this

Arjun Mahishi

@arjunmahishi

hey guys.. I get this as the output when I try to go get this package

 $ go get github.com/go-playground/validator/v10
cannot find package "github.com/go-playground/validator/v10" in any of:
    /usr/local/go/src/github.com/go-playground/validator/v10 (from $GOROOT)
    /home/arjunmahishi/go/src/github.com/go-playground/validator/v10 (from $GOPATH)

But it's working when I do go get github.com/go-playground/validator

(without the v10)

ahmar siddiqui

@ahhmarr

Hello guys
thanks for creating such a robust validator I'm a go-lang noob and yet I can use it efficiently

had a query regarding validating enum types

is it possible to validate ?

koi-fish

@koifish082_twitter

Hello, I'm new to this library and have a question on validation for specific strings.

Question
Which way is good to validate specific string such as some status string defined like this ?

I need to apply the same type validation to multiple places.

const (
    StatusSuccess = "success"
    StatusFail = "fail"
    StatusProcessing = "processing"
)

var validStatusList = []string{
    StatusSuccess,
    StatusFail,
    StatusProcessing,
}

Background
I found 2 ways to do it using struct tag or custom validation.
I'm wondering costome valiation is better for the case we would like to use variables for validation in my current understanding because in struct tag way like the following, the strings needd to be hardcoded in struct tag.

type SomeStruct struct {
    status string `form:"status" json:"status" binding:"required,oneof=success fail processing"`
}

Dean Karn

@deankarn

@koifish082_twitter I recommend using a custom validation since you've stated you'll want to use it in multiple places.

I would use a map with the keys being your enum values and value of bool and then can us that map directly in your custom validations rule

Phani Rithvij

@phanirithvij

Hi, I have a few questions

Is there a way to specify and/or constraints i.e. can be a valid email or phone no?
Negations? I need a value that should not be a valid email but should be a valid alphanum

If not alphanum then alphanumunicode

Phani Rithvij

@phanirithvij

I settled with this finally validate:"alphanumunicode,excludesall=!@#$%^&*()"

ahmar siddiqui

@ahhmarr

trying to apply custom validation on *multipart.FileHeader seems to be not working ¯_(⊙︿⊙)_/¯
ex: Logo *multipart.FileHeaderform:"logo" json:"logo" binding:"filetype" gorm:"-"

Vlad Suciu

@suciuvlad

Is there a way to get a simpler error message? My messages appear as "Error:Field validation for 'Title' failed on the 'required' tag" however, if i check translations/en.go i see some friendlier messages for e.g. for required "RequiredString is a required field". Without the "tag" wording.

卜木

@xqbumu

I have add an issure go-playground/validator#707 and fixed it with pr go-playground/validator#709

Roman

@kochurovro

Hi everyone. I use v10. I get panic when validation tags of slice contain dive and unique. I get a panic if dive stays before unique, if dive stays after It is working correctly. Could u explain me why?

Asaf_Einihovich

@AsafEini

hi everyone im encountering an issue which im unable to resolve and would be happy to get hlp from the community.

im trying to dep ensure the validator/v10 and i get the folowing errs : Solving failure: No versions of github.com/go-playground/validator met constraints:
v10.4.1: Could not introduce github.com/go-playground/validator@v10.4.1, as its subpackage github.com/go-playground/validator/v10 is missing. (Package is required by (root).)

lnelectronic

@lnelectronic

how to add validate json

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