Class: Karafka::Web::Ui::Lib::PaginateArray

Inherits:
Object
  • Object
show all
Defined in:
lib/karafka/web/ui/lib/paginate_array.rb

Overview

A simple wrapper for paginating array related data structures

Instance Method Summary collapse

Instance Method Details

#call(array, current_page) ⇒ Array<Array, <Integer, nil>>

Returns Array with two elements: first is the array with data of the given page and second is the next page number of nil in case there is no next page (end of data).

Parameters:

  • array (Array) —

    array we want to paginate

  • current_page (Integer) —

    page we want to be on

Returns:

  • (Array<Array, <Integer, nil>>) —

    Array with two elements: first is the array with data of the given page and second is the next page number of nil in case there is no next page (end of data)



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# File 'lib/karafka/web/ui/lib/paginate_array.rb', line 14

def call(array, current_page)
  slices = array.each_slice(per_page).to_a

  current_data = slices[current_page - 1] || []

  if slices.count >= current_page - 1 && current_data.size >= per_page
    next_page = current_page + 1
  else
    next_page = nil
  end

  [current_data, next_page]
end