dry-rb/chat

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Piotr Solnica

@solnic

@matheussilvasantos required(:sample).maybe(included_in?: [1, 2, 3])

Matheus Silva Santos de Oliveira

@matheussilvasantos

@solnic thank you!!

Igor Alexandrov

@igor-alexandrov

@matheussilvasantos if you have optional key (it may be missed in input) then you should use optional instead of required

optional(:sample).maybe(included_in?: [1, 2, 3])

Igor Alexandrov

@igor-alexandrov

irb(main):013:0> VALUE = 1
=> 1
irb(main):014:0> Dry::Monads::Success(Dry::Monads::Success(VALUE))
=> Success(Success(1))

I always thought that it should be just Success(1)

Igor Alexandrov

@igor-alexandrov

Don't know maybe #flatten or #compact should be added for such cases

Nikita Shilnikov

@flash-gordon

you usually use fmap/bind depending on the case, there's no flatten/join because it's normally not required

flattening by default will ruin the semantics

it won't "type check"

Igor Alexandrov

@igor-alexandrov

Ok, got it

Thanks!

Igor Alexandrov

@igor-alexandrov

The question above was because we tried to combine Try and Result monads, but we found a solution:

irb(main):003:0> Try { Failure(5) }.to_result.bind(&:itself)
=> Failure(5)
irb(main):004:0> Try { raise RuntimeError.new }.to_result.bind(&:itself)
=> Failure(#<RuntimeError: RuntimeError>)
irb(main):005:0> Try { Success(1) }.to_result.bind(&:itself)
=> Success(1)

Matheus Silva Santos de Oliveira

@matheussilvasantos

@igor-alexandrov yes, I'm using optional :smile:

hasimisikli

@hasimisikli

@solnic hello ,firstly thanks of uploaded. can I ask a question?

can you explain this project please?

Igor Alexandrov

@igor-alexandrov

@hasimisikli you mean to explain dry-rb?

hasimisikli

@hasimisikli

Yes.

Grant Shangreaux

@gcentauri

"dry-rb is a collection of next-generation Ruby libraries, each intended to encapsulate a common task"

https://dry-rb.org/news/2016/03/16/announcing-dry-rb/

https://dry-rb.org/news/2016/08/15/introducing-dry-system/

@hasimisikli that might get you started

Herwin

@herwinw

Does dry-validation have something like input input.strict of dry-struct? I can't find any indication of it in the documentation

Igor S. Morozov

@Morozzzko

What are you trying to achieve?

Herwin

@herwinw

Working with a legacy app where a lot of logic is based on a nested hash. I'm convinced some keys have become obsolete and some keys contain typos, so I'm trying to work backwards to a schema where every entry of the hash adheres to, that gives a starting point to see what keys exactly exist. So I want the validation to error if extra keys are given.

I could also use dry-struct for it, but I'm not interested in the resulting struct (yet), and dry-validation gives more readable errors

Matheus Silva Santos de Oliveira

@matheussilvasantos

Is there a way to get only valid attributes from to_h method of Dry::Validation::Result?

Igor Alexandrov

@igor-alexandrov

to_h just returns an output which includes everything. But you can always compare output with errors and exclude keys that you don't need.

Alex Park

@alexspark

Hi all, new to all thing dry here, i really like the APIs. Can someone guide me on how to coerce boolean strings but protect against weird strings like 'please'. attribute :active, Types::Params::Bool.constrained(included_in: [true, false]) throws errors in the gem

Alex Park

@alexspark

One work around I've thought of is to constrain the attribute as a string to only be one of 'true' or 'false', then try to coerce to boolean

Igor Alexandrov

@igor-alexandrov

you don't need constrained with Types::Params::Bool

because Types::Params::Bool already converts everything to true or false

Alex Park

@alexspark

but Types::Params::Bool['please'] returns 'please', and I don't want to assume sensible inputs.

which abstraction should i use to ensure only 'true' and 'false strings as input

Igor Alexandrov

@igor-alexandrov

I see...

From my point of view it is a bug...

please start an Issue

I will try to take a look

Alex Park

@alexspark

:+1: dry-rb/dry-types#276

Oskar Szrajer

@gotar

Hi, anyone tried dry-web-roda with GraphQL? Any demo repo?

Anyone are using dry-web for their projects?

Oskar Szrajer

@gotar

I'm afraid except me or @timriley not too much persons use it on production :(

Tim Riley

@timriley

GraphQL applicability would be more about what persistence library you use, anyway. I haven’t heard of anyone doing it with rom-rb.

(and FWIW I’m looking at using hanami-router + hanami-controller as a front-end to dry-web/system for our future projects at work)

Nikita Shilnikov

@flash-gordon

@timriley awesome, thanks mate

David Dawson

@DangerDawson

@timriley you currently use roda? I am interested in why the switch to hanami-router?

Tim Riley

@timriley

From experience I realise I would prefer concrete classes/objects for each endpoint, rather than a big nested block.

Also, from a personal perspective, I’m trying to help with hanami development. This is a way for me to get on top of (some parts of) the framework.

David Dawson

@DangerDawson

Makes complete sense

Vasily Kolesnikov

@v-kolesnikov

@gotar I use dry-web-roda for a couple of my (production) projects.
I also found some inconvenience of using big blocks to describe routes and would love to see a better solution (maybe Hanami, but I'm not sure). Now I just divide my routes to separated files (named as a resource e.g. users.rb for /users/*).

Oskar Szrajer

@gotar

looks like I will try in new project a dry-web-roda + graphQL combo

we will see

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