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-rw-r--r--actionpack/lib/action_dispatch/middleware/debug_view.rb56
1 files changed, 56 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/debug_view.rb b/actionpack/lib/action_dispatch/middleware/debug_view.rb
new file mode 100644
index 0000000000..43c0a84504
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/debug_view.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+require "pp"
+
+require "action_view"
+require "action_view/base"
+
+module ActionDispatch
+ class DebugView < ActionView::Base # :nodoc:
+ RESCUES_TEMPLATE_PATH = File.expand_path("templates", __dir__)
+
+ def initialize(assigns)
+ paths = [RESCUES_TEMPLATE_PATH]
+ lookup_context = ActionView::LookupContext.new(paths)
+ super(lookup_context, assigns)
+ end
+
+ def compiled_method_container
+ self.class
+ end
+
+ def debug_params(params)
+ clean_params = params.clone
+ clean_params.delete("action")
+ clean_params.delete("controller")
+
+ if clean_params.empty?
+ "None"
+ else
+ PP.pp(clean_params, +"", 200)
+ end
+ end
+
+ def debug_headers(headers)
+ if headers.present?
+ headers.inspect.gsub(",", ",\n")
+ else
+ "None"
+ end
+ end
+
+ def debug_hash(object)
+ object.to_hash.sort_by { |k, _| k.to_s }.map { |k, v| "#{k}: #{v.inspect rescue $!.message}" }.join("\n")
+ end
+
+ def render(*)
+ logger = ActionView::Base.logger
+
+ if logger && logger.respond_to?(:silence)
+ logger.silence { super }
+ else
+ super
+ end
+ end
+ end
+end