Class: Awestruct::Extensions::Paginator

Inherits:
Object
  • Object
show all
Defined in:
lib/awestruct/extensions/paginator.rb

Defined Under Namespace

Modules: Paginated

Instance Method Summary collapse

Constructor Details

#initialize(prop_name, input_path, opts = {}) ⇒ Paginator

Returns a new instance of Paginator.



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# File 'lib/awestruct/extensions/paginator.rb', line 46

def initialize(prop_name, input_path, opts={})
  @prop_name    = prop_name
  @input_path   = input_path
  @per_page     = opts[:per_page] || 20
  @window_size  = opts[:window_size] || 2
  @remove_input = opts.has_key?( :remove_input ) ? opts[:remove_input] : true
  @output_prefix = opts[:output_prefix] || File.dirname( @input_path )
  @collection    = opts[:collection]
end

Instance Method Details

#execute(site) ⇒ Object 



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# File 'lib/awestruct/extensions/paginator.rb', line 56

def execute(site)
  removal_path = nil
  all = @collection || site.send( @prop_name )
  i = 1
  paginated_pages = []
  all.each_slice( @per_page ) do |slice|
    page = site.engine.find_and_load_site_page( @input_path )
    removal_path ||= page.output_path
    slice.extend( Paginated )
    page.send( "#{@prop_name}=", slice )
    if ( i == 1 )
      page.output_path = File.join( @output_prefix, File.basename( @input_path ) + ".html" )
    else
      page.output_path = File.join( @output_prefix, "page/#{i}.html" )
    end
    page.paginate_generated = true
    site.pages << page
    paginated_pages << page
    i = i + 1
  end

  if ( @remove_input )
    site.pages.reject!{|page|
      ( ! page.paginate_generated && ( page.output_path == removal_path ) )
    }
  end

  prev_page = nil
  paginated_pages.each_with_index do |page,i|
    slice = page.send( @prop_name )
    
    slice.current_page       = page
    slice.current_page_index = i
    slice.pages              = paginated_pages
    slice.window             = 1

    if ( prev_page != nil )
      prev_page.send( @prop_name ).next_page = page
      page.send( @prop_name ).previous_page  = prev_page
    end

    prev_page = page
  end

  paginated_pages.first
end