go-playground/validator

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

Emir Ribić

@ribice

I need limit and offset to be positive numbers, but not mandatory ones.

So they are min:0, mandatory false

or something like that

if I put min:0 only

it fails if I don't send the field

Emir Ribić

@ribice

i mean min:1

Dean Karn

@deankarn

@ribice have you tried omitempty,min=1?

Emir Ribić

@ribice

No, I did it manually at that time (e.g. < 1)

Dean Karn

@deankarn

If you use

The validation I mention, that should work for your case

Ryan King

@ryanking

how do i get FieldError Namespace() to take into account json tag names? some of the docs make it sound like that should be happening, but it doesn't seem to be working for me

Dean Karn

@deankarn

Have you registered a tagNameFunc? That's OST likely why it wouldn't

*most likely

Ryan King

@ryanking

@joeybloggs oh I thought it would pick up names from the json tags already?

Dean Karn

@deankarn

it used to in an older version, but defining your own allows for much more flexible parsing of names, even from tags other than JSON

Ryan King

@ryanking

ah ok that makes sense

emurmotol

@emurmotol

how to validate big ints?

Value *big.Int json:"value" binding:"required,min=1000000000000000" // does not work

Franklin Harding

@fharding1

Hello! I just created this PR to add excludesfield and containsfield baked-in validators: go-playground/validator#424.

Pomke

@pomke

Hiya, sorry if this is a bit of a newbie question, I have a struct:

type LoginProvider struct {
Email string json:"email"
Phone string json:"phone"
Password string json:"password"
}

I want to validate XOR email and Phone

ie: you must provide either Email or Phone, but not both

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 :)

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