Module: ActiveHash::Associations::ActiveRecordExtensions

Defined in:
lib/associations/associations.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(base) ⇒ Object 



5
6
7
 
# File 'lib/associations/associations.rb', line 5

def self.extended(base)
  require_relative 'reflection_extensions'
end

Instance Method Details

#belongs_to(name, scope = nil, **options) ⇒ Object 



34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
 
# File 'lib/associations/associations.rb', line 34

def belongs_to(name, scope = nil, **options)
  klass_name = options.key?(:class_name) ? options[:class_name] : name.to_s.camelize
  klass =
    begin
      klass_name.safe_constantize
    rescue StandardError, LoadError
      nil
    end

  if klass && klass < ActiveHash::Base
    options = { class_name: klass_name }.merge(options)
    belongs_to_active_hash(name, options)
  else
    super
  end
end

#belongs_to_active_hash(association_id, options = {}) ⇒ Object 



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
 
# File 'lib/associations/associations.rb', line 51

def belongs_to_active_hash(association_id, options = {})
  options = {
    :class_name => association_id.to_s.camelize,
    :foreign_key => association_id.to_s.foreign_key,
    :shortcuts => []
  }.merge(options)
  # Define default primary_key with provided class_name if any
  options[:primary_key] ||= options[:class_name].safe_constantize.primary_key
  options[:shortcuts] = [options[:shortcuts]] unless options[:shortcuts].kind_of?(Array)

  define_method(association_id) do
    options[:class_name].safe_constantize.send("find_by_#{options[:primary_key]}", send(options[:foreign_key]))
  end

  define_method("#{association_id}=") do |new_value|
    send "#{options[:foreign_key]}=", new_value ? new_value.send(options[:primary_key]) : nil
  end

  options[:shortcuts].each do |shortcut|
    define_method("#{association_id}_#{shortcut}") do
      send(association_id).try(shortcut)
    end

    define_method("#{association_id}_#{shortcut}=") do |new_value|
      send "#{association_id}=", new_value ? options[:class_name].safe_constantize.send("find_by_#{shortcut}", new_value) : nil
    end
  end

  if ActiveRecord::Reflection.respond_to?(:create)
    if defined?(ActiveHash::Reflection::BelongsToReflection)
      reflection = ActiveHash::Reflection::BelongsToReflection.new(association_id.to_sym, nil, options, self)
    else
      reflection = ActiveRecord::Reflection.create(
        :belongs_to,
        association_id.to_sym,
        nil,
        options,
        self
      )
    end

    ActiveRecord::Reflection.add_reflection(
      self,
      association_id.to_sym,
      reflection
    )
  else
    method = ActiveRecord::Base.method(:create_reflection)
    if method.respond_to?(:parameters) && method.parameters.length == 5
      create_reflection(
        :belongs_to,
        association_id.to_sym,
        nil,
        options,
        self
      )
    else
      create_reflection(
        :belongs_to,
        association_id.to_sym,
        options,
        options[:class_name].safe_constantize
      )
    end
  end
end

#has_many(association_id, scope = nil, **options, &extension) ⇒ Object 



9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/associations/associations.rb', line 9

def has_many(association_id, scope = nil, **options, &extension)
  if options[:through]
    klass_name = association_id.to_s.classify
    klass =
      begin
        klass_name.safe_constantize
      rescue StandardError, LoadError
        nil
      end

    if klass && klass < ActiveHash::Base
      define_method(association_id) do
        join_models = send(options[:through])
        join_models.flat_map do |join_model|
          join_model.send(association_id.to_s.singularize)
        end.uniq
      end

      return
    end
  end

  super
end