CODEWITHSUNDEEP
ruby-on-railsrubycaching
stig Garet
stig Garet

Reputation: 564

How to join two cache into the Model

I need to join two list cached into my Model, to build a new cached list

I've tried the code below but cached_groups is producing an empty result. Any ideas?

  def cached_favgroups
    Rails.cache.fetch([self, "fav_groups"]) {fav_groups.to_a}
  end

  def cached_groups_all
    Rails.cache.fetch([self, "groups"])
  end

  def cached_groups
    Rails.cache.fetch(self.cached_groups_all - self.cached_favgroups )
  end

Upvotes: 2

Views: 42

Answers (1)

Tom Aranda
Tom Aranda

Reputation: 6026

You need to add a block to the fetch method. Try this:

def cached_groups
  Rails.cache.fetch([self, "groups_all_favgroups"]) do
    self.cached_groups_all - self.cached_favgroups 
  end
end

Upvotes: 2

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