Module: BreezyTemplate::CacheExtension

Included in:
BreezyTemplate
Defined in:
lib/breezy_template/cache_extension.rb

Instance Method Summary collapse

Instance Method Details

#_breezy_set_cache(key, value) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 95

def _breezy_set_cache(key, value)
  "cache[\"#{key}\"]=#{_dump(value)};"
end

#_cache(key = nil, options = {}) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 109

def _cache(key=nil, options={})
  perform_caching = @context.respond_to?(:controller) && @context.controller.perform_caching

  if !perform_caching || key.nil?
    return yield self
  end

  parent_js = @js
  key = _cache_key(key, options)
  @js = []

  blank_or_value = begin
    ::Rails.cache.fetch(key, options) do
      result = yield self
      if result != _blank
        @js << _breezy_set_cache(key, result)
        @js.join
      else
        _blank
      end
    end
  ensure
    @js = parent_js
  end

  if blank_or_value == _blank
    _blank
  else
    v = blank_or_value
    @js.push(v)
    ::BreezyTemplate::Var.new("cache[\"#{key}\"]")
  end
end

#_cache_key(key, options = {}) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 99

def _cache_key(key, options={})
  key = _fragment_name_with_digest(key, options)
  key = url_for(key).split('://', 2).last if ::Hash === key
  key = ::ActiveSupport::Cache.expand_cache_key(key, :breezy)

  ::Digest::MD5.hexdigest(key.to_s).tap do |digest|
    _logger.try :debug, "Cache key :#{key} was digested to #{digest}"
  end
end

#_cache_options(options) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 83

def _cache_options(options)
  return nil if !options || options.blank?
  options = [*options[:cache]]
  key, options = options

  return [key, options]
end

#_cache_options?(options) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/breezy_template/cache_extension.rb', line 79

def _cache_options?(options)
  !!options[:cache]
end

#_extended_options?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/breezy_template/cache_extension.rb', line 91

def _extended_options?(value)
  _cache_options?(value) || super
end

#_fragment_name_with_digest(key, options) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 143

def _fragment_name_with_digest(key, options)
  if options && options[:_partial]
    partial = options[:_partial]
    [key, _partial_digest(partial)]
  else
    if @context.respond_to?(:cache_fragment_name)
      # Current compatibility, fragment_name_with_digest is private again and cache_fragment_name
      # should be used instead.
      @context.cache_fragment_name(key, options)
    elsif @context.respond_to?(:fragment_name_with_digest)
      # Backwards compatibility for period of time when fragment_name_with_digest was made public.
      @context.fragment_name_with_digest(key)
    else
      key
    end
  end
end

#_mapping_element(element, opts = {}) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 64

def _mapping_element(element, opts={})
  if _cache_options?(opts)
    key, options = _cache_options(opts)
    if ::Proc === key
      key = key.call(element)
    end

    _cache(key, options) {
      _scope { yield element }
    }
  else
    super
  end
end

#_normalize_with_cache_options(options) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 14

def _normalize_with_cache_options(options)
  return options unless options.key? :cache

  options = options.dup
  options[:cache] = [*options[:cache]]

  if options[:cache].size == 1
    options[:cache].push({})
  end

  options
end

#_result(value, *args) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 5

def _result(value, *args)
  options = _cache_options(args[0])
  if options
    _cache(*options) { super }
  else
    super
  end
end

#array!(collection = [], *attributes) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 44

def array!(collection=[], *attributes)
  has_option = attributes.first.is_a? ::Hash
  return super if !has_option

  options = attributes.first.dup
  options = _normalize_with_cache_options(options)

  if options[:partial] && options[:cache]
    partial_name = [*options[:partial]][0]
    cache_options = options[:cache][1]
    cache_options[:_partial] = partial_name
  end

  if ::Kernel.block_given?
    super(collection, options, ::Proc.new)
  else
    super(collection, options)
  end
end

#set!(key, value = BLANK, *args) ⇒ Object 



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# File 'lib/breezy_template/cache_extension.rb', line 27

def set!(key, value = BLANK, *args)
  options = args.first || {}
  options = _normalize_with_cache_options(options)

  if options[:partial] && options[:cache]
    partial_name = [*options[:partial]][0]
    cache_options = options[:cache][1]
    cache_options[:_partial] = partial_name
  end

  if ::Kernel.block_given?
    super(key, value, options, ::Proc.new)
  else
    super(key, value, options)
  end
end