81 lines
2.5 KiB
Ruby
81 lines
2.5 KiB
Ruby
module PaginationHelper
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def smart_paginator(set, &block)
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if params[:page] && set.page > 1000
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set.extend(PostSets::Sequential)
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sequential_paginator(set)
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else
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set.extend(PostSets::Numbered)
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numbered_paginator(set, &block)
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end
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end
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def sequential_paginator(set)
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html = "<menu>"
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unless set.is_first_page?
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html << '<li>' + link_to("« Previous", params.merge(:after_id => set.first_id)) + '</li>'
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end
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unless set.is_last_page?
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html << '<li>' + link_to("Next »", params.merge(:before_id => set.last_id)) + '</li>'
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end
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html << "</menu>"
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html.html_safe
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end
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def numbered_paginator(set, &block)
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html = "<menu>"
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window = 3
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if set.total_pages <= (window * 2) + 5
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1.upto(set.total_pages) do |page|
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html << numbered_paginator_item(page, set.current_page, &block)
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end
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elsif set.current_page <= window + 2
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1.upto(set.current_page + window) do |page|
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html << numbered_paginator_item(page, set.current_page, &block)
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end
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html << numbered_paginator_item("...", set.current_page, &block)
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html << numbered_paginator_final_item(set.total_pages, set.current_page, &block)
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elsif set.current_page >= set.total_pages - (window + 1)
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html << numbered_paginator_item(1, set.current_page, &block)
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html << numbered_paginator_item("...", set.current_page, &block)
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(set.current_page - window).upto(set.total_pages) do |page|
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html << numbered_paginator_item(page, set.current_page, &block)
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end
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else
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html << numbered_paginator_item(1, set.current_page, &block)
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html << numbered_paginator_item("...", set.current_page, &block)
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(set.current_page - window).upto(set.current_page + window) do |page|
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html << numbered_paginator_item(page, set.current_page, &block)
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end
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html << numbered_paginator_item("...", set.current_page, &block)
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html << numbered_paginator_final_item(set.total_pages, set.current_page, &block)
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end
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html << "</menu>"
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html.html_safe
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end
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def numbered_paginator_final_item(total_pages, current_page, &block)
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if total_pages <= 1000
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numbered_paginator_item(total_pages, current_page, &block)
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else
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""
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end
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end
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def numbered_paginator_item(page, current_page, &block)
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html = "<li>"
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if page == "..."
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html << "..."
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elsif page == current_page
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html << page.to_s
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else
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html << capture(page, &block)
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end
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html << "</li>"
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html.html_safe
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end
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end
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