Module: XBar::Rails3::Association

Defined in:
lib/xbar/rails3/association.rb

Instance Method Summary collapse

Instance Method Details

#association_accessor_methods(reflection, association_proxy_class) ⇒ Object 



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
 
# File 'lib/xbar/rails3/association.rb', line 63

def association_accessor_methods(reflection, association_proxy_class)
  define_method(reflection.name) do |*params|
    reload_connection()
    force_reload = params.first unless params.empty?
    association = association_instance_get(reflection.name)

    if association.nil? || force_reload
      association = association_proxy_class.new(self, reflection)
      retval = force_reload ? reflection.klass.uncached { association.reload } : association.reload
      if retval.nil? and association_proxy_class == ActiveRecord::Associations::BelongsToAssociation
        association_instance_set(reflection.name, nil)
        return nil
      end
      association_instance_set(reflection.name, association)
    end

    association.target.nil? ? nil : association
  end

  define_method("loaded_#{reflection.name}?") do
    reload_connection()
    association = association_instance_get(reflection.name)
    association && association.loaded?
  end

  define_method("#{reflection.name}=") do |new_value|
    reload_connection()
    association = association_instance_get(reflection.name)

    if association.nil? || association.target != new_value
      association = association_proxy_class.new(self, reflection)
    end

    association.replace(new_value)
    association_instance_set(reflection.name, new_value.nil? ? nil : association)
  end

  define_method("set_#{reflection.name}_target") do |target|
    return if target.nil? and association_proxy_class == ActiveRecord::Associations::BelongsToAssociation
    reload_connection()
    association = association_proxy_class.new(self, reflection)
    association.target = target
    association_instance_set(reflection.name, association)
  end
end

#association_constructor_method(constructor, reflection, association_proxy_class) ⇒ Object 



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
 
# File 'lib/xbar/rails3/association.rb', line 37

def association_constructor_method(constructor, reflection, association_proxy_class)
  define_method("#{constructor}_#{reflection.name}") do |*params|
    reload_connection()
    attributees      = params.first unless params.empty?
    replace_existing = params[1].nil? ? true : params[1]
    association      = association_instance_get(reflection.name)

    unless association
      association = association_proxy_class.new(self, reflection)
      association_instance_set(reflection.name, association)
    end

    if association_proxy_class == ActiveRecord::Associations::HasOneAssociation
      return_val = association.send(constructor, attributees, replace_existing)
    else
      return_val = association.send(constructor, attributees)
    end

    if should_set_current_shard?
      return_val.current_shard = self.current_shard
    end

    return_val
  end
end

#collection_reader_method(reflection, association_proxy_class) ⇒ Object 



4
5
6
7
8
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
 
# File 'lib/xbar/rails3/association.rb', line 4

def collection_reader_method(reflection, association_proxy_class)
  define_method(reflection.name) do |*params|
    force_reload = params.first unless params.empty?
    reload_connection()

    association = association_instance_get(reflection.name)

    unless association
      association  = association_proxy_class.new(self, reflection)
      association_instance_set(reflection.name, association)
    end

    reflection.klass.uncached { association.reload } if force_reload

    association
  end

  define_method("#{reflection.name.to_s.singularize}_ids") do
    reload_connection()
    if send(reflection.name).loaded? || reflection.options[:finder_sql]
      send(reflection.name).map(&:id)
    else
      if reflection.through_reflection && reflection.source_reflection.belongs_to?
        through = reflection.through_reflection
        primary_key = reflection.source_reflection.primary_key_name
        send(through.name).select("DISTINCT #{through.quoted_table_name}.#{primary_key}").map!(&:"#{primary_key}")
      else
        send(reflection.name).select("#{reflection.quoted_table_name}.#{reflection.klass.primary_key}").except(:includes).map!(&:id)
      end
    end
  end
end