Module: WillPaginate::DataMapper::CollectionMethods

Includes:
CollectionMethods
Defined in:
lib/will_paginate/data_mapper.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from CollectionMethods

#next_page, #out_of_bounds?, #previous_page, #total_pages

Instance Attribute Details

#current_page ⇒ Object

Returns the value of attribute current_page.



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# File 'lib/will_paginate/data_mapper.rb', line 35

def current_page
  @current_page
end

Instance Method Details

#offset ⇒ Object 



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# File 'lib/will_paginate/data_mapper.rb', line 45

def offset
  query.offset
end

#paginated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/will_paginate/data_mapper.rb', line 37

def paginated?
  !current_page.nil?
end

#per_page ⇒ Object 



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# File 'lib/will_paginate/data_mapper.rb', line 41

def per_page
  query.limit || model.per_page
end

#to_a ⇒ Object 



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# File 'lib/will_paginate/data_mapper.rb', line 65

def to_a
  if paginated?
    ::WillPaginate::Collection.create(current_page, per_page) do |col|
      col.replace super
      col.total_entries ||= total_entries
    end
  else
    super
  end
end

#total_entries ⇒ Object 



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# File 'lib/will_paginate/data_mapper.rb', line 49

def total_entries
  @total_entries ||= begin
    if loaded? and @array.size < per_page and (current_page == 1 or @array.size > 0)
      offset + @array.size
    else
      # :reload prevents Collection.filter from being run, which
      # would cause a stack overflow
      clean_query = query.merge(:reload => true)
      # seems like the only way
      clean_query.instance_variable_set('@limit', nil)
      clean_query.instance_variable_set('@offset', 0)
      new_collection(clean_query).count
    end
  end
end