Class: ActiveRecord::Associations::Preloader::Association::LoaderQuery

Inherits:
Object
  • Object
show all
Defined in:
activerecord/lib/active_record/associations/preloader/association.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(scope, association_key_name) ⇒ LoaderQuery

Returns a new instance of LoaderQuery.



10
11
12
13
 
# File 'activerecord/lib/active_record/associations/preloader/association.rb', line 10

def initialize(scope, association_key_name)
  @scope = scope
  @association_key_name = association_key_name
end

Instance Attribute Details

#association_key_name ⇒ Object (readonly)

Returns the value of attribute association_key_name



8
9
10
 
# File 'activerecord/lib/active_record/associations/preloader/association.rb', line 8

def association_key_name
  @association_key_name
end

#scope ⇒ Object (readonly)

Returns the value of attribute scope



8
9
10
 
# File 'activerecord/lib/active_record/associations/preloader/association.rb', line 8

def scope
  @scope
end

Instance Method Details

#eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


15
16
17
18
19
 
# File 'activerecord/lib/active_record/associations/preloader/association.rb', line 15

def eql?(other)
  association_key_name == other.association_key_name &&
    scope.table_name == other.scope.table_name &&
    scope.values_for_queries == other.scope.values_for_queries
end

#hash ⇒ Object 



21
22
23
 
# File 'activerecord/lib/active_record/associations/preloader/association.rb', line 21

def hash
  [association_key_name, scope.table_name, scope.values_for_queries].hash
end

#load_records_for_keys(keys, &block) ⇒ Object 



38
39
40
41
42
43
44
45
 
# File 'activerecord/lib/active_record/associations/preloader/association.rb', line 38

def load_records_for_keys(keys, &block)
  if association_key_name.is_a?(Array)
    or_scope = keys.map { |values_set| scope.klass.where(association_key_name.zip(values_set).to_h) }.inject(&:or)
    scope.merge(or_scope)
  else
    scope.where(association_key_name => keys)
  end.load(&block)
end

#load_records_in_batch(loaders) ⇒ Object 



29
30
31
32
33
34
35
36
 
# File 'activerecord/lib/active_record/associations/preloader/association.rb', line 29

def load_records_in_batch(loaders)
  raw_records = records_for(loaders)

  loaders.each do |loader|
    loader.load_records(raw_records)
    loader.run
  end
end

#records_for(loaders) ⇒ Object 



25
26
27
 
# File 'activerecord/lib/active_record/associations/preloader/association.rb', line 25

def records_for(loaders)
  LoaderRecords.new(loaders, self).records
end