Module: Hungry::Collection::Pagination

Defined in:
lib/hungry/collection/pagination.rb

Defined Under Namespace

Classes: NotPaginatedError

Instance Method Summary collapse

Instance Method Details

#current_page ⇒ Object 



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# File 'lib/hungry/collection/pagination.rb', line 55

def current_page
  if paginated?
    pagination['current_page'].to_i
  else
    1
  end
end

#first(n = 1) ⇒ Object 



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# File 'lib/hungry/collection/pagination.rb', line 10

def first(n = 1)
  scope   = all(per_page: n, page: 1)
  results = scope.results
  
  if n == 1 && (value = results.first)
    resource = klass.new results.first
    resource.data_source = scope.data_source
    resource
  elsif n > 1
    results.first(n).map do |result|
      resource = klass.new result
      resource.data_source = scope.data_source
      resource
    end
  end
end

#next ⇒ Object

Raises:



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# File 'lib/hungry/collection/pagination.rb', line 76

def next
  raise NotPaginatedError unless paginated?
  all page: next_page if next_page
end

#next_page ⇒ Object 



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# File 'lib/hungry/collection/pagination.rb', line 67

def next_page
  current_page + 1 if paginated? && current_page < total_pages
end

#paginate(page, options = {}) ⇒ Object 



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# File 'lib/hungry/collection/pagination.rb', line 6

def paginate(page, options = {})
  all options.merge(page: page)
end

#paginated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/hungry/collection/pagination.rb', line 27

def paginated?
  pagination.present?
end

#per_page ⇒ Object 



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# File 'lib/hungry/collection/pagination.rb', line 31

def per_page
  if paginated?
    pagination['per_page'].to_i
  else
    response['results'].length
  end
end

#previous ⇒ Object

Raises:



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# File 'lib/hungry/collection/pagination.rb', line 71

def previous
  raise NotPaginatedError unless paginated?
  all page: previous_page if previous_page
end

#previous_page ⇒ Object 



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# File 'lib/hungry/collection/pagination.rb', line 63

def previous_page
  current_page - 1 if paginated? && current_page > 1
end

#total_entries ⇒ Object 



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# File 'lib/hungry/collection/pagination.rb', line 39

def total_entries
  if paginated?
    pagination['total_entries'].to_i
  else
    response['results'].length
  end
end

#total_pages ⇒ Object 



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# File 'lib/hungry/collection/pagination.rb', line 47

def total_pages
  if paginated?
    pagination['total_pages'].to_i
  else
    1
  end
end