73 lines
2.4 KiB
Ruby
73 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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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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ENTRY = 'entry'.freeze
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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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# * <tt>:padding</tt> - padding
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def initialize(original_array = [], limit: nil, offset: nil, total_count: nil, padding: nil)
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@_original_array, @_limit_value, @_offset_value, @_total_count, @_padding = original_array, (limit || default_per_page).to_i, offset.to_i, total_count, padding.to_i
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if limit && offset
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extend Kaminari::PageScopeMethods
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end
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if @_total_count && (@_total_count <= original_array.count)
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original_array = original_array.first(@_total_count)[@_offset_value, @_limit_value]
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end
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unless @_total_count
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original_array = original_array[@_offset_value, @_limit_value]
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end
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super(original_array || [])
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end
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# Used for page_entry_info
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def entry_name(options = {})
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I18n.t('helpers.page_entries_info.entry', options.reverse_merge(default: ENTRY.pluralize(options[:count])))
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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 = num.to_i - 1) < 0 ? 0 : num))
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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, padding: @_padding
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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.length
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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, padding: @_padding
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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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# * <tt>:padding</tt> - padding
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def self.paginate_array(array, limit: nil, offset: nil, total_count: nil, padding: nil)
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PaginatableArray.new array, limit: limit, offset: offset, total_count: total_count, padding: padding
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end
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end
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