ruby哈希差异到HTMLhttps://github.com/liufengyun/hashdiff

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def parse_diff(changes)
# [["~", "name", "original name", "updated name"]] => {:name => [&＃39;original_name&＃39;, &＃39;updated_name&＃39;, &＃39;Modify&＃39;]}
parsed_diff = {}
changes.each do |change|
unless change[1].match(/updated_at/) || change[1].match(/.id/) || change[1].match(/.created_at/)
if change[1].match(/line_items/) || change[1].match(/site_lists/) || change[1].match(/zip_code_lists/)
change[1].gsub!(/\d+/, Random.rand(1000).to_s)
end
type = if change[0] == "+"
"Add"
elsif change[0] == "-"
"Remove"
else
"Modify"
end
parsed_diff[change[1]] = [change[2], change[3], type]
end
end
styled_parsed_diff = "

"
parsed_diff.each do |key, value|
nested_items = ""
if value.first.is_a?(Hash)
nested_items <<"
#{value.last} #{key.titleize}
• "
  value.first.each do |k, v|
  unless !v.present? || k.match(/created_at/) || k.match(/id/) || k.match(/updated_at/)
  nested_items <<"#{k} : #{v}; "
  end
  end
  nested_items <<"
"
else
nested_items <<"
• #{value.last} #{key.titleize}: #{value.first} - #{value[1]}
"
end
styled_parsed_diff < end
styled_parsed_diff <<"