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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
# File 'lib/mongoid/denormalization.rb', line 42
def denormalize_from(relation, field_name, denormalized_field_name: nil, to_klass_infos: [])
to_klass = self
field_terms = field_name.to_s.split(".")
denormalized_field_name ||= [relation, field_terms.last].flatten.join("_")
if to_klass_infos.blank? && !(to_klass.embedded?)
to_klass_infos = [{
klasses: [to_klass],
selector_proc: Proc.new do |id, value|
{"#{relation}_id".to_sym => id, denormalized_field_name.to_sym => {"$ne" => value}}
end,
updator: denormalized_field_name,
index_key: "#{relation}_id"
}]
end
to_klass_roots = to_klass_infos.map{|to_klass_info| to_klass_info[:klasses].map(&:to_s)}.flatten.uniq
from_klass = self.relations[relation.to_s].class_name.constantize
field_type = from_klass.fields[field_name.to_s].options[:type] if field_terms.size == 1 && field_name.to_s != "_type"
field_type ||= String
to_klass_infos.each do |to_klass_info|
next unless to_klass_info[:index_key].include?(".")
field_path = to_klass_info[:index_key].split(".").first
to_klass_info[:klasses].each do |klass|
unless klass.method_defined?(:force_denormalize)
klass.send(:define_method, :force_denormalize) do
end
end
unless klass.method_defined?(:force_denormalize!)
klass.send(:define_method, :force_denormalize!) do
force_denormalize
self.save
end
end
unless klass.method_defined?("force_denormalize_#{field_path}".to_sym)
klass.send(:define_method, "force_denormalize_#{field_path}".to_sym) do
docs = self.send(field_path.to_sym)
if docs.respond_to?(:each)
docs.each{|doc| doc.force_denormalize}
else
docs.force_denormalize
end
end
force_denormalize_module = Module.new do
define_method "force_denormalize" do |*args|
super(*args)
self.send("force_denormalize_#{field_path}")
end
end
klass.prepend(force_denormalize_module)
end
end
end
from_klass.instance_eval do
after_save do |from_doc|
changed_fn = "#{field_terms[0]}_changed?"
changed_fn = "asset_filename_changed?" if field_terms[0].to_s == "asset"
if from_doc.send(changed_fn)
field_value = ::Mongoid::Denormalization::Helpers.field_value(from_doc, field_terms)
::Mongoid::Denormalization::Helpers.update_from_klass_changes(to_klass_infos, from_doc.id, field_value)
end
end
after_destroy do |from_doc|
field_value = nil
::Mongoid::Denormalization::Helpers.update_from_klass_changes(to_klass_infos, from_doc.id, field_value)
end
end
to_klass.class_eval do
get_func_module = Module.new do
define_method denormalized_field_name.to_s do |*args|
use_denormalized = to_klass_roots.find{|to_klass_root| self._root.is_a?(to_klass_root.constantize)}.present?
field_value = super(*args) if use_denormalized
return field_value if field_value.present?
from_doc = self.send(relation)
return nil if from_doc.blank?
field_value = ::Mongoid::Denormalization::Helpers.field_value(from_doc, field_terms)
if use_denormalized
self.send("#{denormalized_field_name}=", field_value)
self.set("#{denormalized_field_name}" => field_value) if self.persisted?
end
return field_value
end
end
self.prepend(get_func_module)
define_method "denormalize_#{denormalized_field_name}" do
use_denormalized = to_klass_roots.find{|to_klass_root| self._root.is_a?(to_klass_root.constantize)}.present?
return unless use_denormalized
from_doc = self.send(relation)
return nil if from_doc.blank?
field_value = ::Mongoid::Denormalization::Helpers.field_value(from_doc, field_terms)
self.send("#{denormalized_field_name}=", field_value)
return true
end
define_method "denormalize_#{denormalized_field_name}!" do
use_denormalized = to_klass_roots.find{|to_klass_root| self._root.is_a?(to_klass_root.constantize)}.present?
return unless use_denormalized
from_doc = self.send(relation)
return nil if from_doc.blank?
field_value = ::Mongoid::Denormalization::Helpers.field_value(from_doc, field_terms)
self.set(denormalized_field_name.to_sym => field_value)
end
force_denormalize_module = Module.new do
define_method "force_denormalize" do |*args|
super(*args)
self.send("denormalize_#{denormalized_field_name}")
end
end
self.prepend(force_denormalize_module)
end
to_klass.instance_eval do
self.field(denormalized_field_name, type: field_type)
before_save do |doc|
if doc.send("#{relation}_id_changed?")
doc.send("denormalize_#{denormalized_field_name}")
end
end
end
end
|