Class: Liquor::Pagination::PageExternal

Inherits:
Object
  • Object
show all
Includes:
External
Defined in:
lib/liquor/extensions/pagination.rb

Instance Method Summary collapse

Methods included from External

included, #liquor_send

Constructor Details

#initialize(collection, options = {}) ⇒ PageExternal

Returns a new instance of PageExternal.



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# File 'lib/liquor/extensions/pagination.rb', line 56

def initialize(collection, options={})
  @collection = collection
  @options    = options
  @index      = @collection.current_page
end

Instance Method Details

#each_relevant_page ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 104

def each_relevant_page
  relevant_pages.each do |page|
    with(page); yield
  end
end

#in_inner_window ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 84

def in_inner_window
  (@collection.current_page - @index).abs <= @options[:inner_window]
end

#in_outer_window ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 88

def in_outer_window
  @index <= @options[:outer_window] ||
      @collection.total_pages - @index < @options[:outer_window]
end

#is_current ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 62

def is_current
  @index == @collection.current_page
end

#is_first ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 66

def is_first
  @index == 1
end

#is_gap ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 93

def is_gap
  !in_outer_window && !in_inner_window
end

#is_last ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 70

def is_last
  @index == @collection.total_pages - 1
end

#is_next ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 78

def is_next
  @index == @collection.current_page + 1
end

#is_prev ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 74

def is_prev
  @index == @collection.current_page - 1
end

#path ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 118

def path
  @url_generator ||= UrlGenerator.bootstrap.new

  if @collection.respond_to? :to_page_path
    @collection.to_page_path(@url_generator, @index)
  elsif @collection.is_a? ActiveRecord::Relation
    @url_generator.polymorphic_path(@collection.klass, page: @index)
  else
    raise "Don't know how to generate page path for #{@collection.class}"
  end
end

#relevant_pages ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 110

def relevant_pages
  left_window_plus_one = 1.upto(@options[:outer_window] + 1).to_a
  right_window_plus_one = (@collection.total_pages - @options[:outer_window]).upto(@collection.total_pages).to_a
  inside_window_plus_each_sides = (@collection.current_page - @options[:inner_window] - 1).upto(@collection.current_page + @options[:inner_window] + 1).to_a

  (left_window_plus_one + inside_window_plus_each_sides + right_window_plus_one).uniq.sort.reject {|x| (x < 1) || (x > @collection.total_pages)}
end

#with(index) ⇒ Object 



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# File 'lib/liquor/extensions/pagination.rb', line 99

def with(index)
  @index = index
  self
end