discourse/app/serializers/post_item_excerpt.rb

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module PostItemExcerpt
def self.included(base)
base.attributes(:excerpt, :truncated)
end
def cooked
@cooked ||= object.cooked || PrettyText.cook(object.raw)
end
def excerpt
return nil unless cooked
@excerpt ||= PrettyText.excerpt(cooked, 300, keep_emoji_images: true)
end
def truncated
true
end
def include_truncated?
cooked.length > 300
end
end