class method `self.expand_cache_key`

Ruby on Rails 4.0.13

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

self.expand_cache_key(key, namespace = nil)

Expands out the key argument into a key that can be used for the cache store. Optionally accepts a namespace, and all keys will be scoped within that namespace.

If the key argument provided is an array, or responds to to_a, then each of elements in the array will be turned into parameters/keys and concatenated into a single key. For example:

expand_cache_key([:foo, :bar])               # => "foo/bar"
expand_cache_key([:foo, :bar], "namespace")  # => "namespace/foo/bar"

The key argument can also respond to cache_key or to_param.

Parameters

key req
namespace opt = nil

Source

# File activesupport/lib/active_support/cache.rb, line 79
      def expand_cache_key(key, namespace = nil)
        expanded_cache_key = namespace ? "#{namespace}/" : ""

        if prefix = ENV["RAILS_CACHE_ID"] || ENV["RAILS_APP_VERSION"]
          expanded_cache_key << "#{prefix}/"
        end

        expanded_cache_key << retrieve_cache_key(key)
        expanded_cache_key
      end

Defined in activesupport/lib/active_support/cache.rb line 79 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveSupport::Cache

Signature

Parameters