Module: Goldiloader::CustomPreloads

Included in:
AutoIncludeContext
Defined in:
lib/goldiloader/custom_preloads.rb

Instance Method Summary collapse

Instance Method Details

#initialize ⇒ Object 



5
6
7
8
 
# File 'lib/goldiloader/custom_preloads.rb', line 5

def initialize
  super
  @custom_preloads = nil
end

#preloaded(model, cache_name:, key:, &block) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
# File 'lib/goldiloader/custom_preloads.rb', line 10

def preloaded(model, cache_name:, key:, &block)
  unless preloaded?(cache_name)
    ids = models.map do |record|
      key_from_record(record, key)
    end

    # We're using instance_exec instead of a simple yield to make sure that the
    # given block does not have any references to the model instance as this might
    # lead to unexpected results. The block will be executed in the context of the
    # class of the model instead.
    block_context = models.first.class
    preloaded_hash = block_context.instance_exec(ids, &block)
    store_preloaded(cache_name, preloaded_hash)
  end
  fetch_preloaded(cache_name, model, key: key)
end