Class: Moneta::Adapters::ActiveSupportCache
- Inherits:
-
Object
- Object
- Moneta::Adapters::ActiveSupportCache
- Includes:
- Defaults, ExpiresSupport
- Defined in:
- lib/moneta/adapters/activesupportcache.rb
Overview
ActiveSupport::Cache::Store adapter
Instance Attribute Summary
Attributes included from ExpiresSupport
Instance Method Summary collapse
-
#clear(options = {}) ⇒ void
Clear all keys in this store.
-
#delete(key, options = {}) ⇒ Object
Delete the key from the store and return the current value.
-
#increment(key, amount = 1, options = {}) ⇒ Object
Atomically increment integer value with key.
-
#initialize(options = {}) ⇒ ActiveSupportCache
constructor
A new instance of ActiveSupportCache.
-
#key?(key, options = {}) ⇒ Boolean
Exists the value with key.
-
#load(key, options = {}) ⇒ Object
Fetch value with key.
-
#store(key, value, options = {}) ⇒ Object
Store value with key.
Methods included from Defaults
#[], #[]=, #close, #create, #decrement, #each_key, #features, #fetch, #fetch_values, included, #merge!, #slice, #supports?, #values_at
Methods included from OptionSupport
#expires, #prefix, #raw, #with
Constructor Details
#initialize(options = {}) ⇒ ActiveSupportCache
Returns a new instance of ActiveSupportCache
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# File 'lib/moneta/adapters/activesupportcache.rb', line 13 def initialize( = {}) self.default_expires = .delete(:expires) @backend = if [:backend] [:backend] elsif defined?(Rails) Rails.cache else raise ArgumentError, 'Option :backend is required' end end |
Instance Method Details
#clear(options = {}) ⇒ void
This method returns an undefined value.
Clear all keys in this store
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# File 'lib/moneta/adapters/activesupportcache.rb', line 80 def clear( = {}) @backend.clear self end |
#delete(key, options = {}) ⇒ Object
Delete the key from the store and return the current value
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# File 'lib/moneta/adapters/activesupportcache.rb', line 71 def delete(key, = {}) value = @backend.read(key, ) if value != nil @backend.delete(key, ) [:raw] ? value.to_s : value end end |
#increment(key, amount = 1, options = {}) ⇒ Object
Not every Moneta store implements this method, a NotImplementedError is raised if it is not supported.
Atomically increment integer value with key
This method also accepts negative amounts.
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# File 'lib/moneta/adapters/activesupportcache.rb', line 57 def increment(key, amount = 1, = {}) expires = expires_value() .delete(:raw) existing = Integer(@backend.fetch(key, .merge(raw: true)) { 0 }) if amount > 0 @backend.increment(key, amount, .merge(expires_in: expires ? expires.seconds : nil)) elsif amount < 0 @backend.decrement(key, -amount, .merge(expires_in: expires ? expires.seconds : nil)) else existing end end |
#key?(key, options = {}) ⇒ Boolean
Exists the value with key
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# File 'lib/moneta/adapters/activesupportcache.rb', line 26 def key?(key, = {}) @backend.exist?(key).tap do |exists| if exists && !(expires = expires_value(, nil)).nil? value = @backend.read(key, ) @backend.write(key, value, .merge(expires_in: expires ? expires.seconds : nil)) end end end |
#load(key, options = {}) ⇒ Object
Fetch value with key. Return nil if the key doesn't exist
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# File 'lib/moneta/adapters/activesupportcache.rb', line 36 def load(key, = {}) expires = expires_value(, nil) value = @backend.read(key, ) if value and !expires.nil? @backend.write(key, value, .merge(expires_in: expires ? expires.seconds : nil)) end if [:raw] value && value.to_s else value end end |
#store(key, value, options = {}) ⇒ Object
Store value with key
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# File 'lib/moneta/adapters/activesupportcache.rb', line 50 def store(key, value, = {}) expires = expires_value() @backend.write(key, value, .merge(expires_in: expires ? expires.seconds : nil)) value end |