61 lines
1.8 KiB
Ruby
61 lines
1.8 KiB
Ruby
require 'active_support/core_ext/module'
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module Kaminari
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# Kind of Array that can paginate
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class PaginatableArray < Array
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include Kaminari::ConfigurationMethods::ClassMethods
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attr_internal_accessor :limit_value, :offset_value
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# ==== Options
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# * <tt>:limit</tt> - limit
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# * <tt>:offset</tt> - offset
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# * <tt>:total_count</tt> - total_count
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def initialize(original_array = [], options = {})
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@_original_array, @_limit_value, @_offset_value, @_total_count = original_array, (options[:limit] || default_per_page).to_i, options[:offset].to_i, options[:total_count]
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if options[:limit] && options[:offset]
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class << self
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include Kaminari::PageScopeMethods
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end
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end
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if options[:total_count]
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super original_array
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else
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super(original_array[@_offset_value, @_limit_value] || [])
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end
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end
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# items at the specified "page"
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class_eval <<-RUBY, __FILE__, __LINE__ + 1
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def #{Kaminari.config.page_method_name}(num = 1)
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offset(limit_value * ([num.to_i, 1].max - 1))
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end
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RUBY
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# returns another chunk of the original array
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def limit(num)
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self.class.new @_original_array, :limit => num, :offset => @_offset_value, :total_count => @_total_count
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end
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# total item numbers of the original array
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def total_count
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@_total_count || @_original_array.count
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end
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# returns another chunk of the original array
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def offset(num)
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self.class.new @_original_array, :limit => @_limit_value, :offset => num, :total_count => @_total_count
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end
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end
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# Wrap an Array object to make it paginatable
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# ==== Options
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# * <tt>:limit</tt> - limit
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# * <tt>:offset</tt> - offset
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# * <tt>:total_count</tt> - total_count
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def self.paginate_array(array, options = {})
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PaginatableArray.new array, options
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end
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end
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