class ActionDispatch::ParamsParser

Constants

DEFAULT_PARSERS

Public Class Methods

new(app, parsers = {}) click to toggle source
# File lib/action_dispatch/middleware/params_parser.rb, line 18
def initialize(app, parsers = {})
  @app, @parsers = app, DEFAULT_PARSERS.merge(parsers)
end

Public Instance Methods

call(env) click to toggle source
# File lib/action_dispatch/middleware/params_parser.rb, line 22
def call(env)
  if params = parse_formatted_parameters(env)
    env["action_dispatch.request.request_parameters"] = params
  end

  @app.call(env)
end

Private Instance Methods

logger(env) click to toggle source
# File lib/action_dispatch/middleware/params_parser.rb, line 56
def logger(env)
  env['action_dispatch.logger'] || ActiveSupport::Logger.new($stderr)
end
parse_formatted_parameters(env) click to toggle source
# File lib/action_dispatch/middleware/params_parser.rb, line 31
def parse_formatted_parameters(env)
  request = Request.new(env)

  return false if request.content_length.zero?

  strategy = @parsers[request.content_mime_type]

  return false unless strategy

  case strategy
  when Proc
    strategy.call(request.raw_post)
  when :json
    data = ActiveSupport::JSON.decode(request.raw_post)
    data = {:_json => data} unless data.is_a?(Hash)
    Request::Utils.deep_munge(data).with_indifferent_access
  else
    false
  end
rescue => e # JSON or Ruby code block errors
  logger(env).debug "Error occurred while parsing request parameters.\nContents:\n\n#{request.raw_post}"

  raise ParseError.new(e.message, e)
end