actionpack/lib/action_dispatch/middleware/actionable_exceptions.rb
# frozen_string_literal: true
# :markup: markdown
require "uri"
require "active_support/actionable_error"
module ActionDispatch
class ActionableExceptions # :nodoc:
cattr_accessor :endpoint, default: "/rails/actions"
def initialize(app)
@app = app
end
def call(env)
request = ActionDispatch::Request.new(env)
return @app.call(env) unless actionable_request?(request)
ActiveSupport::ActionableError.dispatch(request.params[:error].to_s.safe_constantize, request.params[:action])
redirect_to request.params[:location]
end
private
def actionable_request?(request)
request.get_header("action_dispatch.show_detailed_exceptions") && request.post? && request.path == endpoint
end
def redirect_to(location)
uri = URI.parse location
if uri.relative? || uri.scheme == "http" || uri.scheme == "https"
body = ""
else
return [400, { Rack::CONTENT_TYPE => "text/plain; charset=utf-8" }, ["Invalid redirection URI"]]
end
[302, {
Rack::CONTENT_TYPE => "text/html; charset=#{Response.default_charset}",
Rack::CONTENT_LENGTH => body.bytesize.to_s,
ActionDispatch::Constants::LOCATION => location,
}, [body]]
end
end
end