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
|
# File 'ext/active_record/associations.rb', line 10
def has_and_belongs_to_many(name, scope = nil, **options, &extension)
habtm_reflection = ActiveRecord::Reflection::HasAndBelongsToManyReflection.new(name, scope, options, self)
builder = Builder::HasAndBelongsToMany.new name, self, options
join_model = builder.through_model
const_set join_model.name, join_model
private_constant join_model.name
middle_reflection = builder.middle_reflection join_model
Builder::HasMany.define_callbacks self, middle_reflection
Reflection.add_reflection self, middle_reflection.name, middle_reflection
middle_reflection.parent_reflection = habtm_reflection
include Module.new {
class_eval <<-RUBY, __FILE__, __LINE__ + 1
def destroy_associations
if !self.class.connection.is_a?(ActiveRecord::ConnectionAdapters::SunstoneAPIAdapter)
association(:#{middle_reflection.name}).delete_all(:delete_all)
association(:#{name}).reset
end
super
end
RUBY
}
hm_options = {}
hm_options[:through] = middle_reflection.name
hm_options[:source] = join_model.right_reflection.name
[:before_add, :after_add, :before_remove, :after_remove, :autosave, :validate, :join_table, :class_name, :extend, :strict_loading].each do |k|
hm_options[k] = options[k] if options.key? k
end
has_many name, scope, **hm_options, &extension
_reflections[name].parent_reflection = habtm_reflection
end
|