strong_params_no_array_string_keys.rb

# frozen_string_literal: true

require 'bundler/inline'
gemfile do
  gem 'rails'
  gem 'debug'
end

require 'rails/all'
require 'minitest/autorun'
require 'debug'

# Given a submitted field with the name `user[things_attributes][UNIQUE_KEY][name]`
# Sub UNIQUE_KEY for the index of the particular field being rendered, or its ID,
# or whatever so long as that key is an integer.
class StrongParamsTest < ActiveSupport::TestCase
  def expected
    [
      ActionController::Parameters.new({ 'name' => 'Table' }).permit(:name),
      ActionController::Parameters.new({ 'name' => 'Pat' }).permit(:name)
    ]
  end

  def permitted_things_attributes(params)
    ActionController::Parameters
      .new(params)
      .require(:user)
      .permit(things_attributes: [:name])
      .fetch(:things_attributes)
      .values
  end

  # Passes, uses index for unique key.
  test 'strong params with integer-able keys' do
    raw_params = {
      user: {
        things_attributes: {
          '1' => { name: 'Table' },
          '2' => { name: 'Pat' }
        }
      }
    }
    assert_equal expected, permitted_things_attributes(raw_params)
  end

  # Failing, uses non-unique index
  test 'strong params with non-unique integer-able keys' do
    raw_params = {
      user: {
        things_attributes: {
          '1' => { name: 'Table' },
          '1' => { name: 'Pat' }
        }
      }
    }
    assert_equal expected, permitted_things_attributes(raw_params)
  end

  # Failing, showing using a UUID if that's what you got
  test 'strong params with non-integer-able keys' do
    raw_params = {
      user: {
        things_attributes: {
          '96883cfc-0b3a-4946-81d7-cbdfddd36f9c' => { name: 'Table' },
          '572070ad-cf9e-404f-8342-50eefc6cbda3' => { name: 'Pat' }
        }
      }
    }
    assert_equal expected, permitted_things_attributes(raw_params)
  end
end