fix iframes links for polish books

Author: wilkus27

CHANGELOG.md

@@ -6,6 +6,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+* Fix iframes links for Polish books
 
 ## [v2.25.1] - 2025-02-25
 

lib/kitchen/element_base.rb

@@ -936,13 +936,13 @@ def rex_link
       page_title = ''
       page = element_with_ancestors.ancestor(:page) if element_with_ancestors.has_ancestor?(:page)
       if page&.is_introduction?
-        page_title = page.first('[data-type="document-title"]').text.kebab_case
+        page_title = page.first('[data-type="document-title"]').text.slugify
       elsif page
         page_string = "#{page.count_in(:chapter) - 1}-"
-        page_title = page.title_text.kebab_case
+        page_title = page.title_text.slugify
       else
         page = element_with_ancestors.ancestor(:composite_page)
-        page_title = page.title.text.kebab_case
+        page_title = page.title.text.slugify
       end
 
       "https://openstax.org/books/#{book_slug}/pages/#{chapter_count}-#{page_string}#{page_title}"

lib/kitchen/patches/string.rb

@@ -16,7 +16,12 @@ def uncapitalize
   #
   # @return [String]
   #
-  def kebab_case
-    strip.downcase.gsub(/®/, ' r').gsub(/[^(\w\s)\-]/, '').gsub(/\s/, '-')
+  def slugify
+    I18n.transliterate(
+      strip.downcase
+        .gsub(/'/, '')
+        .gsub(/®/, ' r')
+        .gsub(/\u2014+/, '-')
+    ).gsub(/[^(\w\s)-]/, '').gsub(/[\s-]+/, '-')
   end
 end

spec/kitchen_spec/element_base_spec.rb

@@ -656,6 +656,17 @@
               </h2>
               <div id="element2"></div>
             </div>
+            <div data-type="page">
+              <div data-type="metadata" style="display: none;">
+                <h1 data-type="document-title" itemprop="name">I have hyphen — and latin letter ć</h1>
+              </div>
+              <h2 data-type="document-title">
+                <span class="os-number">1.2</span>
+                <span class="os-divider"> </span>
+                <span data-type="" itemprop="" class="os-text">I have hyphen — and latin letter ć</span>
+              </h2>
+              <div id="element4"></div>
+            </div>
           </div>
           <div data-type="chapter">
             <div class="os-eoc os-summary-container" data-type="composite-page" data-uuid-key=".summary" id="composite-page-1">
@@ -687,6 +698,11 @@
         eq('https://openstax.org/books/test-book-slug/pages/2-summary-or-something')
     end
 
+    it 'returns rex link for element with hyphen and latin letter' do
+      expect(book_rex_linkable.first('div#element4').rex_link).to \
+        eq('https://openstax.org/books/test-book-slug/pages/1-2-i-have-hyphen-and-latin-letter-c')
+    end
+
     it 'raises error when ancestors can\'t be found' do
       expect { book_rex_linkable.pages('$#not-in-chapter').first.rex_link }.to \
         raise_error(/Cannot create rex link to element[^>]+id="not-in-chapter"/)