go-playground/validator

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

Dean Karn

@deankarn

@justinclift ya looked into it when creating and there's just no way, that I have found, to get the variables name using reflection...only other thing that could be done is add another parameter for the name of the field, but that's not ideal either and doesn't work with dynamic variables. If you come up with anything though please let me know, definitely love to get better output :)

Walter Schulze

@awalterschulze

alias is already supported in relapse. I don't understand what dive is doing, but relapse supports recursion very well. The reflect parser would need some minor work for individual values, but the relapse logic will be fine with it.

Justin Clift

@justinclift

@joeybloggs No worries. :)

Alkesh Ghorpade

@_alkesh26_twitter

@all Guys u have this below struct

type PropertyMessage struct {
    id            string                   `form:"id" json:"id" binding:"required"`
    data         []map[string]interface{} `form:"data" json:"data" binding:"required" validate:"gt=0"`
}

Seems like gt is not working when my POST request payload is

{
     id: "abc",
     data: []
}

i am expecting the request to fail throwing error data has 0 length, but my request is a success.

Forgot to mention i am using the gin library

Alkesh Ghorpade

@_alkesh26_twitter

sorry to bother you guys figured it out :)

Denys Yaroshenko

@freezlite

How to make eq operator case insensitive ?

Dean Karn

@deankarn

@freezlite Just copy the current eq validation from the repo

And lowercase strings before the comparison and register your own custom validation

Denys Yaroshenko

@freezlite

OH my god, last message from me 4 oct

I need to validate field IF another field equal something

how this can be done ?

Dean Karn

@deankarn

Once the validation logic gets this complex, it’s best to creat a StructLevel validation for this kind of logic, it works hand in hand with the struct tag validation :) just check out the examples in the repo and if you ya e any question let me know

Shawn Smith

@shawnsmithdev

hello

goodbye :(

Emir Ribić

@ribice

Just curious, I'm implementing pagination.

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"

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