misspelling output

check_card_and_update.rb

class CheckCardAndUpdate
  # ...

  def call
    card = Card.find(context.card_id)

    context.message = if coincides?(card.original_text, context.custom_original_text)
      correct_answer(card)
      'right'
    else
      incorrect_answer(card)
      context.misspelling = coincides?(card.original_text, context.custom_original_text)
      'wrong'
    end
  end

  # ...

  private def coincides?(card_original_text, custom_original_text)
    DamerauLevenshtein.distance(card_original_text.mb_chars.downcase.to_s, custom_original_text.mb_chars.downcase.to_s) == 0
  end

  # ...
end

home_controller.rb

class HomeController < ApplicationController
  # ...

  def check
    result = CheckCardAndUpdate.call(
        custom_original_text: params[:original_text],
        card_id: params[:id]
      )

    @misspelling = result.misspelling if result.misspelling
    flash[:notice] = result.message
    redirect_to action: :index
  end
end

index.html.slim

/ ...

- if flash[:notice]
  #error_explanation class="#{flash[:notice]}"
    h2 Результат
    ul
      li = flash[:notice]
      
    - if @misspelling
      = @misspelling
      
/ форма на главную страницу
/ ...