instiki/app/models/chunks/category.rb

36 lines
1.2 KiB
Ruby
Executable file

require 'chunks/chunk'
# The category chunk looks for "category: news" on a line by
# itself and parses the terms after the ':' as categories.
# Other classes can search for Category chunks within
# rendered content to find out what categories this page
# should be in.
#
# Category lines can be hidden using ':category: news', for example
class Category < Chunk::Abstract
def self.pattern() return /^(:)?category\s*:(.*)$/i end
attr_reader :hidden, :list
def initialize(match_data)
super(match_data)
@hidden = match_data[1]
@list = match_data[2].split(',').map { |c| c.strip }
end
# If the chunk is hidden, erase the mask and return this chunk
# otherwise, surround it with a 'div' block.
def unmask(content)
return '' if hidden
category_urls = @list.map{|category| url(category) }.join(', ')
replacement = '<div class="property"> category: ' + category_urls + '</div>'
self if content.sub!(mask(content), replacement)
end
# TODO move presentation of page metadata to controller/view
def url(category)
%{<a class="category_link" href="../list/?category=#{category}">#{category}</a>}
end
end