Class: Sigmund::Liquid::Tags::CustomPaginate

Inherits:
Liquid::Block
  • Object
show all
Defined in:
lib/sigmund/liquid/tags/custom_paginate.rb

Constant Summary collapse

Syntax = 
/(#{::Liquid::Expression}+)?/

Instance Method Summary collapse

Constructor Details

#initialize(tag_name, markup, tokens, context) ⇒ CustomPaginate

Returns a new instance of CustomPaginate.



11
12
13
14
15
16
17
18
19
20
21
22
23
 
# File 'lib/sigmund/liquid/tags/custom_paginate.rb', line 11

def initialize(tag_name, markup, tokens, context)
  if markup =~ Syntax
    @collection_name = $1
    @options = { }
    markup.scan(::Liquid::TagAttributes) { |key, value| @options[key.to_sym] = value.gsub(/^'/, '').gsub(/'$/, '') }
    @per_page = @options[:per_page] ? @options[:per_page] : 10
    @window_size = @options[:window_size] ? @options[:window_size].to_i : 3
  else
    raise ::Liquid::SyntaxError.new("Syntax Error in 'paginate' - Valid syntax: paginate <collection> by <number>")
  end

  super
end

Instance Method Details

#render(context) ⇒ Object 



25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
 
# File 'lib/sigmund/liquid/tags/custom_paginate.rb', line 25

def render(context)
  context.stack do
    collection = context[@collection_name]
    @per_page = context[@per_page]

    if @per_page == 'all' 
      @per_page = collection.size + 1
    end

    raise ::Liquid::ArgumentError.new("Cannot paginate array '#{@collection_name}'. Not found.") if collection.nil?

    if collection.is_a? Array
      pagination = Kaminari.paginate_array(collection).page(context['current_page']).per(@per_page).to_liquid.stringify_keys
    else
      pagination = collection.send(:paginate, {
        page:       context['current_page'],
        per_page:   @per_page
      }).to_liquid.stringify_keys
    end
    page_count, current_page = pagination['total_pages'], pagination['current_page']

    path = sanitize_path(context['fullpath'])

    pagination['previous'] = link(I18n.t('pagination.previous'), current_page - 1, path) if pagination['previous_page']
    pagination['next'] = link(I18n.t('pagination.next'), current_page + 1, path) if pagination['next_page']
    pagination['parts'] = []

    hellip_break = false

    if page_count > 1
      1.upto(page_count) do |page|
        if current_page == page
          pagination['parts'] << no_link(page)
        elsif page == 1
          pagination['parts'] << link(page, page, path)
        elsif page == page_count 
          pagination['parts'] << link(page, page, path)
        elsif page <= current_page - window_size or page >= current_page + window_size
          next if hellip_break
          pagination['parts'] << no_link('&laquo;')
          hellip_break = true
          next
        else
          pagination['parts'] << link(page, page, path)
        end
        hellip_break = false
      end
    end

    context['custom_paginate'] = pagination

    render_all(@nodelist, context)
  end
end