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Class Public methods

digest(name:, format: nil, finder:, dependencies: nil)

Supported options:

  • name - Template name

  • format - Template format

  • finder - An instance of ActionView::LookupContext

  • dependencies - An array of dependent views

📝 Source code 
# File actionview/lib/action_view/digestor.rb, line 16
      def digest(name:, format: nil, finder:, dependencies: nil)
        if dependencies.nil? || dependencies.empty?
          cache_key = "#{name}.#{format}"
        else
          cache_key = [ name, format, dependencies ].flatten.compact.join(".")
        end

        # this is a correctly done double-checked locking idiom
        # (Concurrent::Map's lookups have volatile semantics)
        finder.digest_cache[cache_key] || @@digest_mutex.synchronize do
          finder.digest_cache.fetch(cache_key) do # re-check under lock
            partial = name.include?("/_")
            root = tree(name, finder, partial)
            dependencies.each do |injected_dep|
              root.children << Injected.new(injected_dep, nil, nil)
            end if dependencies
            finder.digest_cache[cache_key] = root.digest(finder)
          end
        end
      end
🔎 See on GitHub

logger()

📝 Source code 
# File actionview/lib/action_view/digestor.rb, line 37
      def logger
        ActionView::Base.logger || NullLogger
      end
🔎 See on GitHub

tree(name, finder, partial = false, seen = {})

Create a dependency tree for template named name.

📝 Source code 
# File actionview/lib/action_view/digestor.rb, line 42
      def tree(name, finder, partial = false, seen = {})
        logical_name = name.gsub(%r|/_|, "/")
        interpolated = name.include?("#")

        if !interpolated && (template = find_template(finder, logical_name, [], partial, []))
          if node = seen[template.identifier] # handle cycles in the tree
            node
          else
            node = seen[template.identifier] = Node.create(name, logical_name, template, partial)

            deps = DependencyTracker.find_dependencies(name, template, finder.view_paths)
            deps.uniq { |n| n.gsub(%r|/_|, "/") }.each do |dep_file|
              node.children << tree(dep_file, finder, true, seen)
            end
            node
          end
        else
          unless interpolated # Dynamic template partial names can never be tracked
            logger.error "  Couldn't find template for digesting: #{name}"
          end

          seen[name] ||= Missing.new(name, logical_name, nil)
        end
      end
🔎 See on GitHub