Posts Tagged ‘Flex’

AMFPHP Cake constructor arguments causing NetConnection.Call.BadVersion

Saturday, October 10th, 2009

So… you’re seeing “NetConnection.Call.BadVersion” from Flash while attempting to talk to CPAMF or AMFPHP.
Well my friend, there’s a good probability that something is wrong.
Here are some suggestions:

  1. Fatal Error
  2. Redirect

What I tracked my problem down to was the fact that the following happens when AMFPHP receives a Flash remote object (using remoting):

  1. AMFPHP receives an AMF stream
  2. AMFPHP inteprets the stream byte by byte
  3. AMFPHP decides what sort of “thing” that Flash has attempted to send back
  4. AMFPHP attempts to “find” the relevant PHP class, defined by the class alias that has been sent in Flash.
    e.g. Flash object is "com.org.my.namespace.path.MyClass"
    and interprets that as com/org/my/namespace/path/MyClass.php (or MyClass.class.php) based on the base classMappingPath you sent in the service gateway, $gateway->setClassMappingsPath( '/absolute/path/to/vo/models' );
    attempts to include it, and instantiate an object of MyClass (therefore your filename MUST match your class name).
    i.e. $clazz = new $classname;

So I realised a problem. Constructors, both in Flash and PHP MUST at all costs have default values for them, i.e. the constructor variables are optional, because AMFPHP and Flash don’t use the sent objects, they literally convert them to their relevant objects on each side.

Further info on problems and debugging NetConnection.Call.BedVersion in Flash and AMFPHP can be found by google of course.

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Posted in CakePHP, PHP | No Comments »

CakePHP CPAMF flex VO object flash integration

Monday, September 21st, 2009

Well thank god for that!

After a few days of stressing and pulling out hair, and with the help of one young dutch genius we managed to resolve the cake cpamf plugin VO integration.

Firstly, things to know about cake:

  1. Cake REQUIRES all models to be in the “models” directory.
  2. CPAMF plugin is installed in in the “plugins” directory.
  3. You can view all controllers/services at /cpamf/browser
  4. The gateway that flash connects to is /cpamf/gateway (not /cpamf/gateway.php as the default seems to think).
  5. CPAMF does NOT use the vendor/services/vo directory that is inside the amfphp part of the plugin.

Flash RemoteClass alias can be any path

e.g.

package
[RemoteClass(alias="org.test.TestOp")]
/**
* @author
*/
public class TestOP
{
public var username:String;
public var password:String;
public var id:int;
public function TestOP( username:String=null, password:String=null, id:int=0) {
this.username = username;
this.password = password;
this.id = id;
}
}
}

This class path MUST be represented in the PHP class using the _explicitType = ‘org.test.TestOp’. Once this is done you can pass back this class through any controller method.

e.g.

class TestOp {
public $_explicitType = 'org.test.TestOp';
public $username;
public $password;
public $id;
}

So, as you can see from the above, the PHP class MUST have the full package path to the flash class, and your class will be “models/test_op.php” as cake has a horrid non-pear style naming convention.

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Posted in PHP | No Comments »