Template is missing

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    def find(*args)
      find_all(*args).first || raise(MissingTemplate.new(self, *args))
    end

    def find_file(path, prefixes = [], *args)

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      def find(name, prefixes = [], partial = false, keys = [], options = {})
        @view_paths.find(*args_for_lookup(name, prefixes, partial, keys, options))
      end
      alias :find_template :find

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  # into a separate classes for partials and templates.
  class AbstractRenderer #:nodoc:
    delegate :find_template, :find_file, :template_exists?, :any_templates?, :with_fallbacks, :with_layout_format, :formats, to: :@lookup_context

    def initialize(lookup_context)
      @lookup_context = lookup_context

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            options[:template]
          else
            find_template(options[:template], options[:prefixes], false, keys, @details)
          end
        else
          raise ArgumentError, "You invoked render but did not give any of :partial, :template, :inline, :file, :plain, :html or :body option."

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      @view    = context
      @details = extract_details(options)
      template = determine_template(options)

      prepend_formats(template.formats)

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    # Direct access to template rendering.
    def render_template(context, options) #:nodoc:
      TemplateRenderer.new(@lookup_context).render(context, options)
    end

    # Direct access to partial rendering.

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        render_partial(context, options)
      else
        render_template(context, options)
      end
    end

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        lookup_context.variants = variant if variant

        view_renderer.render(context, options)
      end

      # Assign the rendered format to look up context.

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          Rack::Chunked::Body.new view_renderer.render_body(view_context, options)
        else
          super
        end
      end
  end

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    def render_to_body(options = {})
      _process_options(options)
      _render_template(options)
    end

    def rendered_format

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    def render_to_body(options = {})
      super || _render_in_priorities(options) || " "
    end

    private

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    # <tt>ActionView::Rendering.render_to_body</tt>, if present.
    def render_to_body(options)
      _render_to_body_with_renderer(options) || super
    end

    def _render_to_body_with_renderer(options)

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    def render(*args, &block)
      options = _normalize_render(*args, &block)
      rendered_body = render_to_body(options)
      if options[:html]
        _set_html_content_type
      else

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    def render(*args) #:nodoc:
      raise ::AbstractController::DoubleRenderError if response_body
      super
    end

    # Overwrite render_to_string because body can now be set to a Rack body.

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      render_output = nil
      self.view_runtime = cleanup_view_runtime do
        Benchmark.ms { render_output = super }
      end
      render_output
    end

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  #   # => 0.074
  def ms
    1000 * realtime { yield }
  end
end

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  def realtime # :yield:
    r0 = Process.clock_gettime(Process::CLOCK_MONOTONIC)
    yield
    Process.clock_gettime(Process::CLOCK_MONOTONIC) - r0
  end

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  #   # => 0.074
  def ms
    1000 * realtime { yield }
  end
end

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      render_output = nil
      self.view_runtime = cleanup_view_runtime do
        Benchmark.ms { render_output = super }
      end
      render_output
    end

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    #   end
    def cleanup_view_runtime # :doc:
      yield
    end

    # Every time after an action is processed, this method is invoked

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    def render(*args)
      render_output = nil
      self.view_runtime = cleanup_view_runtime do
        Benchmark.ms { render_output = super }
      end
      render_output

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  module BasicImplicitRender # :nodoc:
    def send_action(method, *args)
      super.tap { default_render unless performed? }
    end

    def default_render(*args)

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      # which is *not* necessarily the same as the action name.
      def process_action(method_name, *args)
        send_action(method_name, *args)
      end

      # Actually call the method associated with the action. Override

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    def process_action(*) #:nodoc:
      self.formats = request.formats.map(&:ref).compact
      super
    end

    # Check for double render errors and set the content_type after rendering.

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    def process_action(*args)
      run_callbacks(:process_action) do
        super
      end
    end

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        if next_sequence.final?
          next_sequence.invoke_before(env)
          env.value = !env.halted && (!block_given? || yield)
          next_sequence.invoke_after(env)
          env.value
        else

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    # <tt>process_action</tt> callbacks around the normal behavior.
    def process_action(*args)
      run_callbacks(:process_action) do
        super
      end
    end

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    private
      def process_action(*args)
        super
      rescue Exception => exception
        request.env["action_dispatch.show_detailed_exceptions"] ||= show_detailed_exceptions?
        rescue_with_handler(exception) || raise

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      ActiveSupport::Notifications.instrument("process_action.action_controller", raw_payload) do |payload|
        begin
          result = super
          payload[:status] = response.status
          result
        ensure

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      def instrument(name, payload = {})
        if notifier.listening?(name)
          instrumenter.instrument(name, payload) { yield payload if block_given? }
        else
          yield payload if block_given?
        end

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        listeners_state = start name, payload
        begin
          yield payload
        rescue Exception => e
          payload[:exception] = [e.class.name, e.message]
          payload[:exception_object] = e

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      def instrument(name, payload = {})
        if notifier.listening?(name)
          instrumenter.instrument(name, payload) { yield payload if block_given? }
        else
          yield payload if block_given?
        end

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      ActiveSupport::Notifications.instrument("start_processing.action_controller", raw_payload.dup)

      ActiveSupport::Notifications.instrument("process_action.action_controller", raw_payload) do |payload|
        begin
          result = super
          payload[:status] = response.status

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        request.filtered_parameters.merge! wrapped_filtered_hash
      end
      super
    end

    private

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      @_response_body = nil

      process_action(action_name, *args)
    end

    # Delegates to the class' ::controller_path

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    def process(*) #:nodoc:
      old_config, I18n.config = I18n.config, I18nProxy.new(I18n.config, lookup_context)
      super
    ensure
      I18n.config = old_config
    end

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      set_request!(request)
      set_response!(response)
      process(name)
      request.commit_flash
      to_a
    end

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        middleware_stack.build(name) { |env| new.dispatch(name, req, res) }.call req.env
      else
        new.dispatch(name, req, res)
      end
    end
  end

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        def dispatch(controller, action, req, res)
          controller.dispatch(action, req, res)
        end
      end

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          controller = controller req
          res        = controller.make_response! req
          dispatch(controller, params[:action], req, res)
        rescue ActionController::RoutingError
          if @raise_on_name_error
            raise

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          req.path_parameters = set_params.merge parameters

          status, headers, body = route.app.serve(req)

          if "pass" == headers["X-Cascade"]
            req.script_name     = script_name

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      def serve(req)
        find_routes(req).each do |match, parameters, route|
          set_params  = req.path_parameters
          path_info   = req.path_info
          script_name = req.script_name

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      def serve(req)
        find_routes(req).each do |match, parameters, route|
          set_params  = req.path_parameters
          path_info   = req.path_info
          script_name = req.script_name

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        req = make_request(env)
        req.path_info = Journey::Router::Utils.normalize_path(req.path_info)
        @router.serve(req)
      end

      def recognize_path(path, environment = {})

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    def call(env)
      env[RACK_TEMPFILES] ||= []
      status, headers, body = @app.call(env)
      body_proxy = BodyProxy.new(body) do
        env[RACK_TEMPFILES].each(&:close!) unless env[RACK_TEMPFILES].nil?
      end

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    def call(env)
      status, headers, body = @app.call(env)

      if etag_status?(status) && etag_body?(body) && !skip_caching?(headers)
        original_body = body

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      case env[REQUEST_METHOD]
      when "GET", "HEAD"
        status, headers, body = @app.call(env)
        headers = Utils::HeaderHash[headers]
        if status == 200 && fresh?(env, headers)
          status = 304

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    def call(env)
      status, headers, body = @app.call(env)

      if env[REQUEST_METHOD] == HEAD
        [

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      def call(env)
        request = ActionDispatch::Request.new env
        _, headers, _ = response = @app.call(env)

        return response unless html_response?(headers)
        return response if policy_present?(headers)

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          req = make_request env
          prepare_session(req)
          status, headers, body = app.call(req.env)
          res = Rack::Response::Raw.new status, headers
          commit_session(req, res)
          [status, headers, body]

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        def call(env)
          context(env)
        end

        def context(env, app = @app)

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      request = ActionDispatch::Request.new env

      status, headers, body = @app.call(env)

      if request.have_cookie_jar?
        cookie_jar = request.cookie_jar

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      result = run_callbacks :call do
        begin
          @app.call(env)
        rescue => error
        end
      end

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      if callbacks.empty?
        yield if block_given?
      else
        env = Filters::Environment.new(self, false, nil)
        next_sequence = callbacks.compile

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    def call(env)
      error = nil
      result = run_callbacks :call do
        begin
          @app.call(env)
        rescue => error

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    def call(env)
      request = ActionDispatch::Request.new env
      _, headers, body = response = @app.call(env)

      if headers["X-Cascade"] == "pass"
        body.close if body.respond_to?(:close)

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    def call(env)
      request = ActionDispatch::Request.new env
      @app.call(env)
    rescue Exception => exception
      if request.show_exceptions?
        render_exception(request, exception)

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      def call_app(*args)
        env = args.last
        @app.call(env)
      ensure
        ActiveSupport::LogSubscriber.flush_all!
      end

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        if logger.respond_to?(:tagged)
          logger.tagged(compute_tags(request)) { call_app(request, env) }
        else
          call_app(request, env)
        end

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    def tagged(*tags)
      formatter.tagged(*tags) { yield self }
    end

    def flush

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      def tagged(*tags)
        new_tags = push_tags(*tags)
        yield self
      ensure
        pop_tags(new_tags.size)
      end

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    def tagged(*tags)
      formatter.tagged(*tags) { yield self }
    end

    def flush

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        if logger.respond_to?(:tagged)
          logger.tagged(compute_tags(request)) { call_app(request, env) }
        else
          call_app(request, env)
        end

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      req = ActionDispatch::Request.new env
      req.remote_ip = GetIp.new(req, check_ip, proxies)
      @app.call(req.env)
    end

    # The GetIp class exists as a way to defer processing of the request data

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      RequestStore.begin!

      response = @app.call(env)

      returned = response << Rack::BodyProxy.new(response.pop) do
        RequestStore.end!

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      req = ActionDispatch::Request.new env
      req.request_id = make_request_id(req.x_request_id)
      @app.call(env).tap { |_status, headers, _body| headers[X_REQUEST_ID] = req.request_id }
    end

    private

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      end

      @app.call(env)
    end

    def method_override(env)

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    def call(env)
      start_time = Utils.clock_time
      status, headers, body = @app.call(env)
      headers = Utils::HeaderHash[headers]

      request_time = Utils.clock_time - start_time

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          def call(env)
            LocalCacheRegistry.set_cache_for(local_cache_key, LocalStore.new)
            response = @app.call(env)
            response[2] = ::Rack::BodyProxy.new(response[2]) do
              LocalCacheRegistry.set_cache_for(local_cache_key, nil)
            end

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      state = @executor.run!
      begin
        response = @app.call(env)
        returned = response << ::Rack::BodyProxy.new(response.pop) { state.complete! }
      ensure
        state.complete! unless returned

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      end

      @app.call(req.env)
    end
  end
end

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    def call(env)
      status, headers, body = @app.call(env)
      if body.respond_to?(:to_path)
        case type = variation(env)
        when 'X-Accel-Redirect'

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    def call(env)
      req = build_request env
      app.call req.env
    end

    # Defines additional Rack env configuration that is added on each call.

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      def call(env)
        env[Const::PUMA_CONFIG] = @config
        @app.call(env)
      end
    end

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      begin
        begin
          status, headers, res_body = @app.call(env)

          return :async if req.hijacked

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        while true
          case handle_request(client, buffer)
          when false
            return
          when :async

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        else
          if process_now
            process_client client, buffer
          else
            client.set_timeout @first_data_timeout
            @reactor.add client

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          begin
            block.call(work, *extra)
          rescue Exception => e
            STDERR.puts "Error reached top of thread-pool: #{e.message} (#{e.class})"
          end