diff options
Diffstat (limited to 'actionview/lib/action_view')
5 files changed, 18 insertions, 116 deletions
diff --git a/actionview/lib/action_view/helpers/cache_helper.rb b/actionview/lib/action_view/helpers/cache_helper.rb index 401f398721..e842d8e31c 100644 --- a/actionview/lib/action_view/helpers/cache_helper.rb +++ b/actionview/lib/action_view/helpers/cache_helper.rb @@ -126,44 +126,16 @@ module ActionView # # Now all you have to do is change that timestamp when the helper method changes. # - # === Automatic Collection Caching + # === Collection Caching # - # When rendering collections such as: + # When rendering a collection of objects that each use the same partial, a `cached` + # option can be passed. + # For collections rendered such: # - # <%= render @notifications %> - # <%= render partial: 'notifications/notification', collection: @notifications %> + # <%= render partial: 'notifications/notification', collection: @notifications, cached: true %> # - # If the notifications/_notification partial starts with a cache call as: - # - # <% cache notification do %> - # <%= notification.name %> - # <% end %> - # - # The collection can then automatically use any cached renders for that - # template by reading them at once instead of one by one. - # - # See ActionView::Template::Handlers::ERB.resource_cache_call_pattern for - # more information on what cache calls make a template eligible for this - # collection caching. - # - # The automatic cache multi read can be turned off like so: - # - # <%= render @notifications, cache: false %> - # - # === Explicit Collection Caching - # - # If the partial template doesn't start with a clean cache call as - # mentioned above, you can still benefit from collection caching by - # adding a special comment format anywhere in the template, like: - # - # <%# Template Collection: notification %> - # <% my_helper_that_calls_cache(some_arg, notification) do %> - # <%= notification.name %> - # <% end %> - # - # The pattern used to match these is <tt>/# Template Collection: (\S+)/</tt>, - # so it's important that you type it out just so. - # You can only declare one collection in a partial template file. + # The `cached: true` will make Action Views rendering issue a `read_multi` to + # the cache store instead of reading from it for every partial. def cache(name = {}, options = {}, &block) if controller.respond_to?(:perform_caching) && controller.perform_caching name_options = options.slice(:skip_digest, :virtual_path) diff --git a/actionview/lib/action_view/renderer/partial_renderer.rb b/actionview/lib/action_view/renderer/partial_renderer.rb index a9bd257e76..bdbf03191a 100644 --- a/actionview/lib/action_view/renderer/partial_renderer.rb +++ b/actionview/lib/action_view/renderer/partial_renderer.rb @@ -428,8 +428,6 @@ module ActionView layout = find_template(layout, @template_keys) end - collection_cache_eligible = automatic_cache_eligible? - partial_iteration = PartialIteration.new(@collection.size) locals[iteration] = partial_iteration @@ -438,11 +436,6 @@ module ActionView locals[counter] = partial_iteration.index content = template.render(view, locals) - - if collection_cache_eligible - collection_cache_rendered_partial(content, object) - end - content = layout.render(view, locals) { content } if layout partial_iteration.iterate! content diff --git a/actionview/lib/action_view/renderer/partial_renderer/collection_caching.rb b/actionview/lib/action_view/renderer/partial_renderer/collection_caching.rb index 4860f00243..debfcae870 100644 --- a/actionview/lib/action_view/renderer/partial_renderer/collection_caching.rb +++ b/actionview/lib/action_view/renderer/partial_renderer/collection_caching.rb @@ -1,5 +1,3 @@ -require 'active_support/core_ext/object/try' - module ActionView module CollectionCaching # :nodoc: extend ActiveSupport::Concern @@ -12,7 +10,7 @@ module ActionView private def cache_collection_render - return yield unless cache_collection? + return yield unless @options[:cached] keyed_collection = collection_by_cache_keys cached_partials = collection_cache.read_multi(*keyed_collection.keys) @@ -21,30 +19,14 @@ module ActionView rendered_partials = @collection.empty? ? [] : yield index = 0 - keyed_collection.map do |cache_key, _| - cached_partials.fetch(cache_key) do - rendered_partials[index].tap { index += 1 } - end + fetch_or_cache_partial(cached_partials, order_by: keyed_collection.each_key) do + rendered_partials[index].tap { index += 1 } end end - def cache_collection? - @options.fetch(:cache, automatic_cache_eligible?) - end - - def automatic_cache_eligible? - @template && @template.eligible_for_collection_caching?(as: @options[:as]) - end - - def callable_cache_key? - @options[:cache].respond_to?(:call) - end - def collection_by_cache_keys - seed = callable_cache_key? ? @options[:cache] : ->(i) { i } - @collection.each_with_object({}) do |item, hash| - hash[expanded_cache_key(seed.call(item))] = item + hash[expanded_cache_key(item)] = item end end @@ -53,10 +35,13 @@ module ActionView key.frozen? ? key.dup : key # #read_multi & #write may require mutability, Dalli 2.6.0. end - def collection_cache_rendered_partial(rendered_partial, key_by) - if callable_cache_key? - key = expanded_cache_key(@options[:cache].call(key_by)) - collection_cache.write(key, rendered_partial, @options[:cache_options]) + def fetch_or_cache_partial(cached_partials, order_by:) + order_by.map do |cache_key| + cached_partials.fetch(cache_key) do + yield.tap do |rendered_partial| + collection_cache.write(cache_key, rendered_partial) + end + end end end end diff --git a/actionview/lib/action_view/template.rb b/actionview/lib/action_view/template.rb index 15fc2b71a3..169ee55fdc 100644 --- a/actionview/lib/action_view/template.rb +++ b/actionview/lib/action_view/template.rb @@ -130,7 +130,6 @@ module ActionView @source = source @identifier = identifier @handler = handler - @cache_name = extract_resource_cache_name @compiled = false @original_encoding = nil @locals = details[:locals] || [] @@ -166,10 +165,6 @@ module ActionView @type ||= Types[@formats.first] if @formats.first end - def eligible_for_collection_caching?(as: nil) - @cache_name == (as || inferred_cache_name).to_s - end - # Receives a view object and return a template similar to self by using @virtual_path. # # This method is useful if you have a template object but it does not contain its source @@ -355,23 +350,5 @@ module ActionView ActiveSupport::Notifications.instrument("#{action}.action_view".freeze, payload, &block) end end - - EXPLICIT_COLLECTION = /# Template Collection: (?<resource_name>\w+)/ - - def extract_resource_cache_name - if match = @source.match(EXPLICIT_COLLECTION) || resource_cache_call_match - match[:resource_name] - end - end - - def resource_cache_call_match - if @handler.respond_to?(:resource_cache_call_pattern) - @source.match(@handler.resource_cache_call_pattern) - end - end - - def inferred_cache_name - @inferred_cache_name ||= @virtual_path.split('/'.freeze).last.sub('_'.freeze, ''.freeze) - end end end diff --git a/actionview/lib/action_view/template/handlers/erb.rb b/actionview/lib/action_view/template/handlers/erb.rb index 1f8459c24b..85a100ed4c 100644 --- a/actionview/lib/action_view/template/handlers/erb.rb +++ b/actionview/lib/action_view/template/handlers/erb.rb @@ -123,31 +123,6 @@ module ActionView ).src end - # Returns Regexp to extract a cached resource's name from a cache call at the - # first line of a template. - # The extracted cache name is captured as :resource_name. - # - # <% cache notification do %> # => notification - # - # The pattern should support templates with a beginning comment: - # - # <%# Still extractable even though there's a comment %> - # <% cache notification do %> # => notification - # - # But fail to extract a name if a resource association is cached. - # - # <% cache notification.event do %> # => nil - def resource_cache_call_pattern - /\A - (?:<%\#.*%>)* # optional initial comment - \s* # followed by optional spaces or newlines - <%\s*cache[\(\s] # followed by an ERB call to cache - \s* # followed by optional spaces or newlines - (?<resource_name>\w+) # capture the cache call argument as :resource_name - [\s\)] # followed by a space or close paren - /xm - end - private def valid_encoding(string, encoding) |