Class: Hx::Listing::Paginate

Inherits:
Object
  • Object
show all
Includes:
Filter
Defined in:
lib/hx/listing/paginate.rb

Instance Method Summary collapse

Methods included from Filter

#each_entry_path, #edit_entry, #get_entry

Constructor Details

#initialize(input, options) ⇒ Paginate

Returns a new instance of Paginate.



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# File 'lib/hx/listing/paginate.rb', line 32

def initialize(input, options)
  @input = Cache.new(input)
  @page_size = options[:page_size]
end

Instance Method Details

#each_entry(selector) ⇒ Object 



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# File 'lib/hx/listing/paginate.rb', line 37

def each_entry(selector)
  @input.each_entry(Path::ALL) do |index_path, index_entry|
    items = index_entry['items'] || []
    if items.empty?
      index_entry = index_entry.dup
      index_entry['pages'] = [index_entry]
      index_entry['page_index'] = 0
      yield index_path, index_entry if selector.accept_path? index_path
    else
      pages = []
      n_pages = (items.size + @page_size - 1) / @page_size
      for num in 0...n_pages
        page_items = items[@page_size * num, @page_size]
        entry = index_entry.dup
        entry['items'] = page_items
        entry['prev_page'] = "#{num}"
        entry['next_page'] = "#{num+2}"
        entry['pages'] = pages
        entry['page_index'] = num
        pages << {'path' => "#{index_path}/#{num+1}", 'entry' => entry}
      end
      pages[0]['path'] = index_path
      pages[0]['entry'].delete('prev_page')
      if pages.size > 1
        index_name = index_path.split('/').last
        pages[0]['entry']['next_page'] = "#{index_name}/2"
        pages[1]['entry']['prev_page'] = "../#{index_name}"
      end
      pages[-1]['entry'].delete('next_page')
      pages.each do |page|
        path = page['path']
        yield path, page['entry'] if selector.accept_path? path
      end
    end
  end
  self
end