25 lines
707 B
Ruby
25 lines
707 B
Ruby
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class QuoteComparer
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def self.whitespace
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" \t\r\n".freeze
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end
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def initialize(topic_id, post_number, text)
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@topic_id = topic_id
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@post_number = post_number
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@text = text
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@parent_post = Post.where(topic_id: @topic_id, post_number: @post_number).first
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end
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# This algorithm is far from perfect, but it follows the Discourse
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# philosophy of "catch the obvious cases, leave moderation for the
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# complicated ones"
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def modified?
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return true if @text.blank? || @parent_post.blank?
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parent_text = Nokogiri::HTML::fragment(@parent_post.cooked).text.delete(QuoteComparer.whitespace)
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text = @text.delete(QuoteComparer.whitespace)
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!parent_text.include?(text)
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end
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end
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