9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
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
79
|
# File 'lib/cti/active_record/acts_as_heir.rb', line 9
def acts_as_heir_of(predecessor_symbol)
extend ClassMethods
include InstanceMethods
if predecessor_symbol.is_a?(String)
predecessor_symbol = predecessor_symbol.to_sym
end
class_attribute :_predecessor_klass, :_predecessor_symbol
self._predecessor_symbol = predecessor_symbol
self._predecessor_klass = predecessor_symbol.to_s.camelize.constantize
has_one :predecessor, :as => :heir, :class_name => predecessor_symbol.to_s.camelize, :autosave => true, :dependent => :destroy
alias_method_chain :predecessor, :build
begin
self._predecessor_klass.columns.reject{|c| c.primary || c.name =~ /^heir_/}.map(&:name).each do |att|
define_method(att) do
predecessor.send(att)
end
define_method("#{att}=") do |val|
predecessor.send("#{att}=",val)
end
end
self._predecessor_klass.reflect_on_all_associations.reject{|a| a.name == :heir}.each do |association|
define_method(association.name) do
predecessor.send(association.name)
end
define_method("#{association.name}=") do |val|
predecessor.send("#{association.name}=",val)
end
end
self._predecessor_klass.validators.each do |validator|
self.validates_with(validator.class, :attributes => validator.attributes, :options => validator.options)
end
self._predecessor_klass.get_heritage_exposed_methods.each do |method_symbol|
define_method(method_symbol.to_s) do |*args|
predecessor.send(method_symbol.to_s, *args)
end
end
rescue
Rails.logger.error "Databse not set up yet"
end
before_update :touch_predecessor, :unless => lambda { predecessor.changed? }
after_validation do
new_errors = {}
keys_to_delete = []
errors.each do |e|
if e =~ /^predecessor/
new_e = e.to_s.sub("predecessor.", '')
new_errors[new_e] = errors[e].first
keys_to_delete << e
end
end
keys_to_delete.each { |k| errors.delete(k) }
new_errors.each { |k,v| errors.add(k, v) }
end
end
|