Class: Committee::Middleware::RequestValidation

Inherits:
Base
  • Object
show all
Defined in:
lib/committee/middleware/request_validation.rb

Instance Method Summary collapse

Methods inherited from Base

#call

Constructor Details

#initialize(app, options = {}) ⇒ RequestValidation

Returns a new instance of RequestValidation.



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# File 'lib/committee/middleware/request_validation.rb', line 3

def initialize(app, options={})
  super

  @allow_form_params   = options.fetch(:allow_form_params, true)
  @allow_query_params  = options.fetch(:allow_query_params, true)
  @check_content_type  = options.fetch(:check_content_type, true)
  @check_header        = options.fetch(:check_header, true)
  @optimistic_json     = options.fetch(:optimistic_json, false)
  @strict              = options[:strict]
  @coerce_date_times   = options.fetch(:coerce_date_times, false)
  @coerce_recursive = options.fetch(:coerce_recursive, true)

  @coerce_form_params = options.fetch(:coerce_form_params,
    @schema.driver.default_coerce_form_params)
  @coerce_path_params = options.fetch(:coerce_path_params,
    @schema.driver.default_path_params)
  @coerce_query_params = options.fetch(:coerce_query_params,
    @schema.driver.default_query_params)

  # deprecated
  @allow_extra = options[:allow_extra]
end

Instance Method Details

#handle(request) ⇒ Object 



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# File 'lib/committee/middleware/request_validation.rb', line 26

def handle(request)
  link, param_matches = @router.find_request_link(request)

  if link
    # Attempts to coerce parameters that appear in a link's URL to Ruby
    # types that can be validated with a schema.
    if @coerce_path_params
      Committee::StringParamsCoercer.new(param_matches, link.schema, coerce_recursive: @coerce_recursive).call!
    end

    # Attempts to coerce parameters that appear in a query string to Ruby
    # types that can be validated with a schema.
    if @coerce_query_params && !request.GET.nil? && !link.schema.nil?
      Committee::StringParamsCoercer.new(request.GET, link.schema, coerce_recursive: @coerce_recursive).call!
    end
  end

  request.env[@params_key], request.env[@headers_key] = Committee::RequestUnpacker.new(
    request,
    allow_form_params:  @allow_form_params,
    allow_query_params: @allow_query_params,
    coerce_form_params: @coerce_form_params,
    optimistic_json:    @optimistic_json,
    schema:             link ? link.schema : nil
  ).call

  request.env[@params_key].merge!(param_matches) if param_matches

  if link
    validator = Committee::RequestValidator.new(link, check_content_type: @check_content_type, check_header: @check_header)
    validator.call(request, request.env[@params_key], request.env[@headers_key])

    parameter_coerce!(request, link, @params_key)
    parameter_coerce!(request, link, "rack.request.query_hash") if !request.GET.nil? && !link.schema.nil?

    @app.call(request.env)
  elsif @strict
    raise Committee::NotFound, "That request method and path combination isn't defined."
  else
    @app.call(request.env)
  end
rescue Committee::BadRequest, Committee::InvalidRequest
  raise if @raise
  @error_class.new(400, :bad_request, $!.message).render
rescue Committee::NotFound => e
  raise if @raise
  @error_class.new(
    404,
    :not_found,
    e.message
  ).render
rescue JSON::ParserError
  raise Committee::InvalidRequest if @raise
  @error_class.new(400, :bad_request, "Request body wasn't valid JSON.").render
end