Expose index within "each" rules

[solnic]

Examples

require 'dry-validation'

class PropsContract < Dry::Validation::Contract
  json do
    required(:contacts).value(:array, min_size?: 1).each do
      hash do
        required(:name).filled(:string)
        required(:email).filled(:string)
        required(:phone).filled(:string)
      end
    end
  end

  rule(:contacts).each do |index:|
      key([:email, index]).failure("email not valid")  unless value[:email].include?('@')
  end
end

c = PropsContract.new

c.(
  contacts: [
    { name: 'Jane', email: 'jane@doe.org', phone: '123' },
    { name: 'John', email: 'oops', phone: '123' }
  ]).errors.to_h.inspect
# {:email=>{1=>["email not valid"]}}

Resources

Refs #603

[mrbongiolo]

@solnic could I try solving this one? Currently in the process of upgrading our application from 0.x to 1.5.x and this would help in some cases.
Right now I have to create rules like that:

  rule(:input).each do
    key([:input, values[:input].index(value), :name]).failure(:not_exists, value: value[:name]) unless value[:name].in?(benchmark_rate_names)
  end

[solnic]

@mrbongiolo sure, you're more than welcome to help with this feature :)

[morgoth]

looks like this can be closed, as it's implemented and released