bluzky

bluzky

I know that Vex is a great and popular data validation library. But learn how to write a library is fun and I can learn lots of things. So I build my own library called Valdi

https://github.com/bluzky/valdi

  • It supports validate value against multiple validation:
iex(12)> Valdi.validate(10, type: :integer, number: [min: 10, max: 20])
:ok
iex(13)> Valdi.validate("email@g.c", type: :string, format: ~r/.+@.+\.[a-z]{2,10}/)
{:error, "format not matched"}
  • You can validate list of value
iex(51)> Valdi.validate_list([1,2,3], type: :integer, number: [min: 2])
{:error, [[0, "must be greater than or equal to 2"]]}
  • And validate map data too
iex(54)>  validation_spec = %{
...(54)>     email: [type: :string],
...(54)>     password: [type: :string, length: [min: 8]],
...(54)>     age: [type: :integer, number: [min: 16, max: 60]]
...(54)>   }
iex(56)> Valdi.validate_map(%{name: "dzung", password: "123456", emal: "ddd@example.com", age: 28}, validation_spec)
{:error, %{password: "length must be greater than or equal to 8"}}

Thank for reading.
Please comment if you have any suggestion.

Showing Posts 1 to 4

stefanchrobot

stefanchrobot

My comments would be pretty much the same as here :wink:

bluzky

bluzky OP

Thank you for your comment. I used Ecto.Changeset before and there are some reason why I build another one:

  • Some simple project or library, using Ecto is overkill
  • I need a simple and clean way. Changeset neet much code to do the same thing
    Using Ecto.Changeset
types = %{a: :integer}
data = %{a: "hello"}
default = %{}
changeset = 
    {default, types} 
    |> Ecto.Changeset.cast(data, Map.keys(types)) 
    |> Ecto.Changeset.validate_required([:a]) 
    |> Ecto.Changeset.validate_number(greater_than: 5)

Using Valdi

data_spec = %{a: [type: :integer, required: true, number: [greater_than: 5]}
Valdi.validate(%{a: "hello"}, data_spec)

I have tried wrapping Ecto before but I have to do some hack to support nested and dynamic default value

Mpanarin

Mpanarin

Love this answer!

Coming from python world, where things like cerberus exist, validating request params with Ecto felt like hunting a fly with AR.

Thanks for this minimalistic library!

bluzky

bluzky OP

Thank you. Love to hear that. :smiling_face_with_three_hearts:

— All posts loaded —

Where Next? Top

Trending in Announcing Top

bluzky
You may know https://ui.shadcn.com/, a UI component library for React. I really love it’s design style and components. I’ve built some co...
387 15136 120
New
woylie
Flop is an Elixir library that applies filtering, ordering and pagination parameters to your Ecto queries. offset-based pagination with...
New
restlessronin
The repo is at GitHub - cyberchitta/openai_ex: Community maintained Elixir library for OpenAI API · GitHub. Docs are at OpenaiEx User Gu...
152 11030 135
New
JesseHerrick
Hey, I’m Jesse and I’m the main contributor behind Dexter, a full-featured, lightning-fast Elixir LSP optimized for large codebases. It s...
New
shahryarjb
The Chelekom project is a library of Phoenix and LiveView components generated via Mix tasks to fit developer needs seamlessly. One of i...
New
woylie
Phoenix components for pagination, sortable tables and filter forms with Flop and (optionally) Ecto. pagination cursor pagination sorta...
New
kip
Please say hi to a new lib, Astro that aims to deliver easy-to-consume astronomy calculations of practical use. For now it only calculat...
New

Other Trending Topics Top

akoutmos
@hugobarauna and I (Alex Koutmos) have been hard at work on writing a book on Nerves that takes you from simply blinking LEDs to building...
New
spammy
I’m looking to build a personal workflow to quickly deploy web applications written in elixir/phoenix, for local consumption (ie not on t...
New
mudasobwa
I am seeing a lot of aplications of Argumentum ad Vericundiam in software discussions. They do link some piece of writing and point us to...
New
alexslade
Fly’s CEO posted this recently - Turn And Face The Strange · The Fly Blog It says that Fly is going all-in on sprites, which is a worry ...
New
bartblast
Hey folks, I just published a post about Hologram’s funding and where the project goes next - the short version: Curiosum as Main Spons...
New
Herve37
We’re evaluating API mocking tools for OpenAPI-based projects and would love to hear what other teams are using. We’re particularly inte...
New

We're in Beta

About us Mission Statement

Options

Thread Display Mode




Thread Preview

Skip Thread Previews