Error using AMFServiceProvider

[Dariel Subiros]

Hi Dima:

I was testing restfulx-1.3.1, and began to use AMF by the first time
and threw this error when calling the server:

An ActionScript error has occurred:
TypeError: Error #1034: Type Coercion failed: cannot convert
Object@9fa42b09 to org.restfulx.models.RxModel.
at org.restfulx.serializers::AMFSerializer/cacheItem()[/media/Data/
Docs/0_PROGRAMMING/FLEX_RUBY_RAILS/RestfulX/releases/1.3.1/FIXED_BUGS/
dima-restfulx_framework-3328058/framework/src/org/restfulx/serializers/
AMFSerializer.as:63]
at org.restfulx.serializers::AMFSerializer/unmarshall()[/media/Data/
Docs/0_PROGRAMMING/FLEX_RUBY_RAILS/RestfulX/releases/1.3.1/FIXED_BUGS/
dima-restfulx_framework-3328058/framework/src/org/restfulx/serializers/
AMFSerializer.as:47]
at org.restfulx.services.amf::AMFServiceProvider/unmarshall()[/media/
Data/Docs/0_PROGRAMMING/FLEX_RUBY_RAILS/RestfulX/releases/1.3.1/
FIXED_BUGS/dima-restfulx_framework-3328058/framework/src/org/restfulx/
services/amf/AMFServiceProvider.as:110]
at org.restfulx.services::ServiceResponder/result()[/media/Data/Docs/
0_PROGRAMMING/FLEX_RUBY_RAILS/RestfulX/releases/1.3.1/FIXED_BUGS/dima-
restfulx_framework-3328058/framework/src/org/restfulx/services/
ServiceResponder.as:95]
at Function/<anonymous>()[/media/Data/Docs/0_PROGRAMMING/
FLEX_RUBY_RAILS/RestfulX/releases/1.3.1/FIXED_BUGS/dima-
restfulx_framework-3328058/framework/src/org/restfulx/services/http/
XMLHTTPServiceProvider.as:406]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/onComplete()

I have tested using default ServiceProvider and works just fine, and
when changing the provider to AMF this happened.

Today I downloaded the source code of the framework and compiled it,
but was the same.
Another question:
I'm creating a program and any provider works for me, but: is better/
faster AMF than JSON and XML?

Thanks Dima.

[Dima Berastau]

Hi Dariel,

You probably forgot to configure something on your Rails side:

E.g. check out config/initializers/restfulx.rb

and make sure you actually have the mapping defined:

# Set up the default namespace for serializing Rails models to AMF
RestfulX::AMF::ClassMapper.default_as_prefix = "yourflexpackage.models"

This should be a good example for how to set up AMF in your Rails2 project:

https://github.com/dima/air_amf_sync

Hope this helps,
Dima

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[Dariel Subiros]

Hi Dima:

Thanks for your quick answer. That was exactly the problem. After all this was the first time I tried to use AMF with restfulx, so this post may be helpful for others in their first time too.

Besides that I still had an issue in my program, and was because of this:

To use amf responder I duplicated for example the line format.fxml { render :fxml => @node } and changed fxml for amf as supposed, but in some cases I was using too @node.to_fxml() and forgot to replace it by amf there, but digging in code I realized about that.

Keep doing this job, because there's nothing better than this awesome framework in all the world.

Thanks for all of your help.

Dariel

[Zdravko Gligic]

Folks,

Is RestfulX applicable for purely Flex/AS3 and CouchDB use cases -
without any Ruby/Rails nor even any web servers between the flash
client and the CouchDb server ?

Thanks,
Zdravko

[Dima Berastau]

Hi Zdravko,

In general yes, but please refer to https://github.com/dima/restfulx_framework/wiki/Using-CouchDB-in-Flex-AIR-with-RestfulX
for more details as there are some caveats.

Dima

[Dariel Subiros]

Hi guys:

I'm already using amf successfully with almost all of my models, but I got this error with one of them:

This is the trace of rails server:

Processing NodeContainersController#index to amf (for 127.0.0.1 at 2011-01-21 15:49:34) [GET]

  Parameters: {"format"=>"amf", "action"=>"index", "page"=>"1", "controller"=>"node_containers", "per_page"=>"3"}

  NodeContainer Load (19.8ms)   SELECT * FROM `node_containers` 

  NodeContainer Columns (1.6ms)   SHOW FIELDS FROM `node_containers`

  Node Load (34.5ms)   SELECT * FROM `nodes` WHERE (`nodes`.node_container_id = 124689896) ORDER BY updated_at DESC

  Node Columns (1.4ms)   SHOW FIELDS FROM `nodes`

DEPRECATION WARNING: ActiveRecord::Base#class_name is deprecated and will be removed in Rails 2.3.9. (called from serialize_record at /usr/lib/ruby/gems/1.8/gems/restfulx-1.3.1/lib/restfulx/amf/pure/serializer.rb:162)

TypeError (can't convert Symbol into Array):

  restfulx (1.3.1) lib/restfulx/rx_active_record.rb:207:in `concat'

  restfulx (1.3.1) lib/restfulx/rx_active_record.rb:207

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:193:in `call'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:193:in `serialize_record'

  restfulx (1.3.1) lib/restfulx/rx_active_record.rb:206:in `serialize'

  restfulx (1.3.1) lib/restfulx/rx_active_record.rb:277:in `to_amf'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:212:in `serialize_records'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:210:in `each'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:210:in `serialize_records'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:107:in `serialize_models_array'

  restfulx (1.3.1) lib/restfulx/rx_active_record.rb:252:in `add_associations'

  restfulx (1.3.1) lib/restfulx/rx_active_record.rb:214

  restfulx (1.3.1) lib/restfulx/rx_active_record.rb:213

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:193:in `call'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:193:in `serialize_record'

  restfulx (1.3.1) lib/restfulx/rx_active_record.rb:206:in `serialize'

  restfulx (1.3.1) lib/restfulx/rx_active_record.rb:277:in `to_amf'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:212:in `serialize_records'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:210:in `each'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:210:in `serialize_records'

  restfulx (1.3.1) lib/restfulx/amf/pure/serializer.rb:117:in `serialize_typed_array'

  restfulx (1.3.1) lib/restfulx/rx_active_support.rb:125:in `to_amf'

  app/controllers/node_containers_controller.rb:19

  app/controllers/node_containers_controller.rb:13:in `index'

  config/initializers/restfulx.rb:18:in `call'

  config/initializers/restfulx.rb:40:in `call'

  /usr/lib/ruby/1.8/mongrel.rb:159:in `process_client'

  /usr/lib/ruby/1.8/mongrel.rb:158:in `each'

  /usr/lib/ruby/1.8/mongrel.rb:158:in `process_client'

  /usr/lib/ruby/1.8/mongrel.rb:285:in `run'

  /usr/lib/ruby/1.8/mongrel.rb:285:in `initialize'

  /usr/lib/ruby/1.8/mongrel.rb:285:in `new'

  /usr/lib/ruby/1.8/mongrel.rb:285:in `run'

  /usr/lib/ruby/1.8/mongrel.rb:268:in `initialize'

  /usr/lib/ruby/1.8/mongrel.rb:268:in `new'

  /usr/lib/ruby/1.8/mongrel.rb:268:in `run'

Call the same using fxml/json and works well. So it seems is a amf stuff.

Thanks.

Dariel

[Dima Berastau]

This is also best put into a bug report with some sample code to look at.

Thanks,
Dima

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