radiant_extensions_plugins/extensions/archive/app/models/.svn/text-base/archive_finder.rb.svn-base

   1 class ArchiveFinder
   2
   3   def initialize(&block)
   4     @block = block
   5   end
   6
   7   def find(method, options = {})
   8     @block.call(method, options)
   9   end
  10
  11   class << self
  12     def year_finder(finder, year)
  13       new do |method, options|
  14         start = Time.local(year)
  15         finish = start.next_year
  16         add_condition(options, "published_at >= ? and published_at < ?", start, finish)
  17         finder.find(method, options)
  18       end
  19     end
  20
  21     def month_finder(finder, year, month)
  22       new do |method, options|
  23         start = Time.local(year, month)
  24         finish = start.next_month
  25         add_condition(options, "published_at >= ? and published_at < ?", start, finish)
  26         finder.find(method, options)
  27       end
  28     end
  29
  30     def day_finder(finder, year, month, day)
  31       new do |method, options|
  32         start = Time.local(year, month, day)
  33         finish = start.tomorrow
  34         add_condition(options, "published_at >= ? and published_at < ?", start, finish)
  35         finder.find(method, options)
  36       end
  37     end
  38
  39     private
  40
  41       def concat_conditions(a, b)
  42         sql = "(#{ [a.shift, b.shift].compact.join(") AND (") })"
  43         params = a + b
  44         [sql, *params]
  45       end
  46
  47       def add_condition(options, *condition)
  48         old = options[:conditions] || []
  49         conditions = concat_conditions(old, condition)
  50         options[:conditions] = conditions
  51         options
  52       end
  53
  54   end
  55 end