diff options
Diffstat (limited to 'app/helpers')
| -rw-r--r-- | app/helpers/markup_helper.rb | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/app/helpers/markup_helper.rb b/app/helpers/markup_helper.rb index f2cd676bb1b..0d638b850b4 100644 --- a/app/helpers/markup_helper.rb +++ b/app/helpers/markup_helper.rb @@ -74,14 +74,21 @@ module MarkupHelper # the tag contents are truncated without removing the closing tag. def first_line_in_markdown(object, attribute, max_chars = nil, options = {}) md = markdown_field(object, attribute, options) + return nil unless md.present? - text = truncate_visible(md, max_chars || md.length) if md.present? + tags = %w(a gl-emoji b pre code p span) + tags << 'img' if options[:allow_images] - sanitize( + text = truncate_visible(md, max_chars || md.length) + text = sanitize( text, - tags: %w(a img gl-emoji b pre code p span), + tags: tags, attributes: Rails::Html::WhiteListSanitizer.allowed_attributes + ['style', 'data-src', 'data-name', 'data-unicode-version'] ) + + # since <img> tags are stripped, this can leave empty <a> tags hanging around + # (as our markdown wraps images in links) + options[:allow_images] ? text : strip_empty_link_tags(text).html_safe end def markdown(text, context = {}) @@ -235,6 +242,16 @@ module MarkupHelper end end + def strip_empty_link_tags(text) + scrubber = Loofah::Scrubber.new do |node| + node.remove if node.name == 'a' && node.content.blank? + end + + # Use `Loofah` directly instead of `sanitize` + # as we still use the `rails-deprecated_sanitizer` gem + Loofah.fragment(text).scrub!(scrubber).to_s + end + def markdown_toolbar_button(options = {}) data = options[:data].merge({ container: 'body' }) content_tag :button, |