module RailheadMultifetch
Public Class Methods
included(base)
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# File lib/railhead_multifetch.rb, line 6 def self.included(base) base.class_eval do alias_method_chain :render_collection, :multifetch end end
Public Instance Methods
render_collection_with_multifetch()
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# File lib/railhead_multifetch.rb, line 12 def render_collection_with_multifetch if @view.controller.perform_caching and (@options[:cache].present? or @locals[:cache].present?) return nil if @collection.blank? results = [] keymap = {} digest = ActionView::PartialDigestor.new(name: @template.virtual_path, finder: @view.lookup_context).digest @collection.each do |object| key_base = @options[:cache].respond_to?(:call) ? @options[:cache].call(object) : object key = @view.controller.fragment_cache_key([key_base, digest]) keymap[key] = object end mutable_keys = keymap.keys.map { |key| key.dup } cached_results = Rails.cache.read_multi(*mutable_keys) @collection = (keymap.keys - cached_results.keys).map { |key| keymap[key] } non_cached_results = @collection.present? ? collection_with_template : [] mutable_keys.each { |key| results << (cached_results[key] || non_cached_results.shift) } if @options.key?(:spacer_template) spacer = find_template(@options[:spacer_template]).render(@view, @locals) end results.join(spacer).html_safe else render_collection_without_multifetch end end