25 lines
675 B
Ruby
25 lines
675 B
Ruby
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module Jekyll
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class WithinCategoryPostNavigation < Generator
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def generate(site)
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site.categories.each_pair do |category, posts|
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posts.sort! { |a,b| b <=> a}
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posts.each do |post|
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index = posts.index post
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next_in_category = nil
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previous_in_category = nil
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if index
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if index < posts.length - 1
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next_in_category = posts[index + 1]
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end
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if index > 0
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previous_in_category = posts[index - 1]
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end
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end
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post.data["next_in_category"] = next_in_category unless next_in_category.nil?
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post.data["previous_in_category"] = previous_in_category unless previous_in_category.nil?
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end
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end
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end
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end
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end
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