Class: Supplejack::PaginatedCollection

Inherits:
Object
  • Object
show all
Defined in:
lib/supplejack/paginated_collection.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(collection, page, per_page, total) ⇒ PaginatedCollection

Returns a new instance of PaginatedCollection.



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# File 'lib/supplejack/paginated_collection.rb', line 18

def initialize(collection, page, per_page, total)
  @collection   = collection
  @current_page = page
  @per_page     = per_page
  @total_count  = total
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

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



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# File 'lib/supplejack/paginated_collection.rb', line 56

def method_missing(method, *args, &block)
  @collection.send(method, *args, &block)
end

Instance Attribute Details

#current_page ⇒ Object (readonly)

Returns the value of attribute current_page.



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# File 'lib/supplejack/paginated_collection.rb', line 12

def current_page
  @current_page
end

#per_page ⇒ Object (readonly) Also known as: limit_value

Returns the value of attribute per_page.



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# File 'lib/supplejack/paginated_collection.rb', line 12

def per_page
  @per_page
end

#total_count ⇒ Object Also known as: total_entries

Returns the value of attribute total_count.



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# File 'lib/supplejack/paginated_collection.rb', line 13

def total_count
  @total_count
end

Instance Method Details

#first_page? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/supplejack/paginated_collection.rb', line 30

def first_page?
  current_page == 1
end

#last_page? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/supplejack/paginated_collection.rb', line 34

def last_page?
  current_page >= total_pages
end

#next_page ⇒ Object 



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# File 'lib/supplejack/paginated_collection.rb', line 42

def next_page
  current_page < total_pages ? (current_page + 1) : nil
end

#offset ⇒ Object 



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# File 'lib/supplejack/paginated_collection.rb', line 50

def offset
  (current_page - 1) * per_page
end

#out_of_bounds? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/supplejack/paginated_collection.rb', line 46

def out_of_bounds?
  current_page > total_pages
end

#previous_page ⇒ Object 



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# File 'lib/supplejack/paginated_collection.rb', line 38

def previous_page
  current_page > 1 ? (current_page - 1) : nil
end

#total_pages ⇒ Object Also known as: num_pages 



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# File 'lib/supplejack/paginated_collection.rb', line 25

def total_pages
  (total_count.to_f / per_page).ceil
end