Module: DateAsString::ClassMethods

Defined in:
lib/date_as_string.rb

Instance Method Summary collapse

Instance Method Details

#date_as_string(*args) ⇒ Object 



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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
 
# File 'lib/date_as_string.rb', line 42

def date_as_string(*args)
  defaults = {:input_formats => [:mm_dd_yyyy, :mm_dd_yyyy, :mmddyyyy, :mmddyy, :t_pmd],
              :default_display_format => :mm_dd_yyyy,
              :century_cutoff => 20,
              :default => nil}
  options = args.last.is_a?(Hash) ? defaults.merge(args.pop) : defaults

  #We're current not doing anything with the options...
  #We should support default formats, default value, and allowable formats...

  unless self.respond_to?(:date_as_string_options)
    cattr_accessor :date_as_string_options
    self.date_as_string_options = {}
  end

  args.each do |attribute_name|
    self.date_as_string_options[attribute_name] = options

    validate :"#{attribute_name}_format"

    define_method "#{attribute_name}_string" do |*display_format|
      if instance_variable_get("@#{attribute_name}_string")
        instance_variable_get("@#{attribute_name}_string")
      else
        if self.send("#{attribute_name}").nil?
          if options[:default] && options[:default].is_a?(String)
            eval(options[:default])
          elsif options[:default] && options[:default].is_a?(Proc)
            options[:default].call
          else
            nil
          end
        else
          #self.send("#{attribute_name}").strftime('%m/%d/%Y')
          unless display_format.empty?
            DateAsString::Formats.find_format(display_format[0]).strftime(self.send("#{attribute_name}"))
          else
            DateAsString::Formats.find_format(options[:default_display_format]).strftime(self.send("#{attribute_name}"))
          end
        end
      end
    end

    define_method "#{attribute_name}_string=" do |str|
      instance_variable_set("@#{attribute_name}_string", str)
      self.send("#{attribute_name}=", DateAsString.parse_string(str))
    end

    define_method "#{attribute_name}_format" do
      re = /^(([tT]([\-\+]\d+)?)|(\d{6})|(\d{8})|([0-1]?\d\/[0-3]?\d\/\d\d)|([0-1]?\d\/[0-3]?\d\/(19|20)\d\d))$/

      attribute_string = instance_variable_get("@#{attribute_name}_string")

      #No string was entered - this clears the date
      return if attribute_string.blank?

      #the entered string did not match a regex...
      if (attribute_string =~ re).nil?
        errors.add("#{attribute_name}_string", "must be in the format of MM/DD/YY, MM/DD/YYYY, MMDDYY, MMDDYYYY or t, t+#, t-#")
        return
      end

      #The mapping did not work for some reason...
      if self.send("#{attribute_name}").nil?
        errors.add("#{attribute_name}_string", :invalid)
      end
    end
  end
end