Class: Paged

Inherits:
CleanSlate show all
Defined in:
lib/paged.rb

Instance Method Summary collapse

Constructor Details

#initialize(items, opts) ⇒ Paged

Returns a new instance of Paged.



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# File 'lib/paged.rb', line 4

def initialize(items, opts)
  raise ArgumentError.new ':page_size must be a positive number' unless opts[:page_size] and opts[:page_size] > 0
  @items = items
  @page_size = opts[:page_size]
  @page = 0
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(symbol, *args, &block) ⇒ Object (private) 



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# File 'lib/paged.rb', line 36

def method_missing(symbol, *args, &block)
  page_of_items.send(symbol, *args, &block)
end

Instance Method Details

#next_page ⇒ Object 



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# File 'lib/paged.rb', line 25

def next_page
  return if outside_bounds
  page + 1 if page < total_pages
end

#page ⇒ Object 



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# File 'lib/paged.rb', line 16

def page
  @page + 1
end

#page=(page) ⇒ Object 



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# File 'lib/paged.rb', line 11

def page=(page)
  raise ArgumentError.new 'page must be a number' if not page.kind_of? Numeric
  @page = page - 1
end

#previous_page ⇒ Object 



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# File 'lib/paged.rb', line 20

def previous_page
  return if outside_bounds
  page - 1 if page > 1
end

#respond_to?(symbol, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/paged.rb', line 30

def respond_to?(symbol, include_private=false)
  @items.respond_to? symbol, include_private
end