Module: Slugged::Caching::ClassMethods

Defined in:
lib/slugged/caching.rb

Instance Method Summary collapse

Instance Method Details

#cache_slug_lookup!(slug, record) ⇒ Object

Modify the cache for a given slug. If record is nil, it will delete the item from the slug cache, otherwise it will store the records id.



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# File 'lib/slugged/caching.rb', line 63

def cache_slug_lookup!(slug, record)
  return if Slugged.cache.blank?
  cache = Slugged.cache
  key   = slug_cache_key(slug)
  # Set an expires in option for caching.
  caching_options = Hash.new.tap do |hash|
    expiry = Slugged::Caching.cache_expires_in
    hash[:expires_in] = expiry.to_i if expiry.present?
  end
  record.nil? ? cache.delete(key) : cache.write(key, record.id, caching_options)
end

#find_using_slug(slug) ⇒ Object

Wraps find_using_slug to look in the cache.



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# File 'lib/slugged/caching.rb', line 40

def find_using_slug(slug)
  # First, attempt to load an id and then record from the cache.
  if (cached_id = lookup_cached_id_from_slug(slug)).present?
    return find(cached_id).tap { |r| r.found_via_slug = slug }
  end
  # Otherwise, fallback to the normal approach.
  super.tap do |record|
    cache_slug_lookup!(slug, record) if record.present?
  end
end

#has_cache_for_slug?(slug) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/slugged/caching.rb', line 56

def has_cache_for_slug?(slug)
  lookup_cached_id_from_slug(slug).present?
end

#slug_cache_key(slug) ⇒ Object

Returns a slug cache key for a given slug.



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# File 'lib/slugged/caching.rb', line 52

def slug_cache_key(slug)
  [Slugged.cache_key_prefix, slug_scope_key(Digest::SHA256.hexdigest(slug.to_s.strip))].compact.join("/")
end