discourse/lib/email/styles.rb

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#
# HTML emails don't support CSS, so we can use nokogiri to inline attributes based on
# matchers.
#
module Email
class Styles
def initialize(html)
@html = html
@fragment = Nokogiri::HTML.fragment(@html)
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end
def format_basic
@fragment.css('img').each do |img|
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if img['src'] =~ /\/assets\/emoji\//
img['style'] = "width: 20px; height: 20px;"
else
img['style'] = "max-width: 694px;"
end
if img['src'][0] == "/"
img['src'] = "#{Discourse.base_url}#{img['src']}"
end
end
end
def format_html
@fragment.css('h3').each do |h3|
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h3['style'] = 'margin: 15px 0 20px 0; border-bottom: 1px solid #ddd;'
end
@fragment.css('hr').each do |hr|
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hr['style'] = 'background-color: #ddd; height: 1px; border: 1px;'
end
@fragment.css('a').each do |a|
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a['style'] = 'text-decoration: none; font-weight: bold; font-size: 15px; color: #006699;'
end
@fragment.css('ul').each do |ul|
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ul['style'] = 'margin: 0 0 0 10px; padding: 0 0 0 20px;'
end
@fragment.css('li').each do |li|
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li['style'] = 'padding-bottom: 10px'
end
@fragment.css('pre').each do |pre|
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pre.replace(pre.text)
end
@fragment.css('div.digest-post').each do |div|
div['style'] = 'margin-left: 15px; margin-top: 20px; max-width: 694px;'
end
end
def to_html
@fragment.to_html
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end
end
end