Whether this service contains a service with the given name

[Source]

    # File vendor/rails/actionwebservice/lib/action_web_service/container/delegated_container.rb, line 54
54:         def has_web_service?(name)
55:           web_services.has_key?(name.to_sym)
56:         end

Declares a web service that will provide access to the API of the given object. object must be an ActionWebService::Base derivative.

Web service object creation can either be immediate, where the object instance is given at class definition time, or deferred, where object instantiation is delayed until request time.

Immediate web service object example

  class ApiController < ApplicationController
    web_service_dispatching_mode :delegated

    web_service :person, PersonService.new
  end

For deferred instantiation, a block should be given instead of an object instance. This block will be executed in controller instance context, so it can rely on controller instance variables being present.

Deferred web service object example

  class ApiController < ApplicationController
    web_service_dispatching_mode :delegated

    web_service(:person) { PersonService.new(request.env) }
  end

[Source]

    # File vendor/rails/actionwebservice/lib/action_web_service/container/delegated_container.rb, line 39
39:         def web_service(name, object=nil, &block)
40:           if (object && block_given?) || (object.nil? && block.nil?)
41:             raise(ContainerError, "either service, or a block must be given")
42:           end
43:           name = name.to_sym
44:           if block_given?
45:             info = { name => { :block => block } }
46:           else
47:             info = { name => { :object => object } }
48:           end
49:           write_inheritable_hash("web_services", info)
50:           call_web_service_definition_callbacks(self, name, info)
51:         end