NoMethodError error with `ransackable_scopes` and `date_field`

[kenzo-tanaka]

Hello. First of all, thank you for creating such a nice library! I would like to report that I encountered an error with ransackable_scopes in my project.

Version

• ransack 2.4.2
• Rails 6.1.4.1
• Ruby 2.6.3p62

Reproduction

• Create a scope that takes a date type as an argument, and set it to ransackable_scopes.

  # article.rb
  
  class Article < ApplicationRecord
  scope :created_since, -> (date) {
    where('created_at >= ?', date)
  }
  
  def self.ransackable_scopes(auth_object = nil)
    %i[created_since]
  end
  end

  # search_controller.rb
  class SearchController < ApplicationController
  def index
    @q = Article.ransack(params[:q])
  end
  end

• Add a search field using this scope in view with date_field.

  = search_form_for @q, url: search_index_path do |form|
  = form.date_field :created_since
  = form.submit 'Search'

  

• NoMethodError error occurs when submitting the search form.

  undefined method `strftime' for "2021-09-25":String
  Did you mean?  strip

  # full trace
  actionview (6.1.4.1) lib/action_view/helpers/tags/date_field.rb:9:in `format_date'
  actionview (6.1.4.1) lib/action_view/helpers/tags/datetime_field.rb:9:in `render'
  actionview (6.1.4.1) lib/action_view/helpers/form_helper.rb:1400:in `date_field'
  app/views/search/index.html.slim:4
  actionview (6.1.4.1) lib/action_view/helpers/capture_helper.rb:45:in `block in capture'
  actionview (6.1.4.1) lib/action_view/helpers/capture_helper.rb:209:in `with_output_buffer'
  actionview (6.1.4.1) lib/action_view/helpers/capture_helper.rb:45:in `capture'
  actionview (6.1.4.1) lib/action_view/helpers/form_helper.rb:450:in `form_for'
  client_side_validations (18.0.0) lib/client_side_validations/action_view/form_helper.rb:11:in `form_for'
  ransack (2.4.2) lib/ransack/helpers/form_helper.rb:34:in `search_form_for'
  app/views/search/index.html.slim:3

I have checked this behavior in the repository here. ransackable_scopes by kenzo-tanaka · Pull Request #12 · kenzo-tanaka/rails_sandbox

I'm sorry if I misunderstood.