Yote provides javascript objects that are linked to perl objects running in an application server. These perl objects get the following features :
- Automatic Persistance without a schema.
- idiomatic getters and setters for fields. Calling set_foo("bar") on a Yote object automatically creates and populates the field 'foo'. Calling get_foo("bar") returns the value of foo, populating it with 'bar' if its not yet defined. Fields may contain scalars, hashes, arrays and Yote objects.
- more syntactic sugar : add_to_mylist, remove_from_mylist causes an array field 'mylist' to be created and populated
- Circular References are allowed
- public methods (beginning with a lower case letter) may be invoked by javascript objects
- Methods for creating accounts, logging in
- Tokens can be used for logging in, and are linked to IP
- Passwords are not plaintext.
- Ability to limit access to which accounts may access which methods or objects
- Yote object method execution is thread-safe. Yote web application server receives messages in different threads, but has a single threaded execution process.
Once Yote has been set up, the client and server are written as described below.
- The client contacts the server and gets the (singleton) root app with the perl package name (Yote::Hello).
- The hello method is called on the app and its response is stored in result.
<html><head><title>Hello World</title>
<script src="./js/jquery-latest.js"></script>
<script src="./js/jquery.dumper.js"></script>
<script src="./js/jquery.base64.min.js"></script>
<script src="./js/json2.js"></script>
<script src="./js/yote.js"></script>
<script>
$().ready(function(){
var hello_app = $.yote.init("http://"+location.host+"/cgi-bin/yote.cgi").get_app('Yote::Hello');
$('#button').click( function() {
var result = hello_app.hello({ name:$('#txt').val() } );
alert( result ); //get the message from running the hello method.
alert( 'testfield is ' + hello_app.get_testfield() ); //get the value of testfield that is attached to the app
var counter = hello_app.get_counter(); //get the counter object that is attached to the app
alert( 'counter is at ' + counter.get_count() ); //get the value of the count field of the counter object attached to the app
} );
});
</script></head>
<body><h1>Hello World</h1>
<input type=text id=txt><BR><button type=button id=button>Say Hi</button>
</body></html>
package Yote::Hello;
use strict;
use Yote::Obj;
use base 'Yote::AppRoot';
sub init {
my $self = shift;
#when the hello is created for the first time, install a counter to track how many times it is called
$self->set_counter( new Yote::Obj() );
}
sub hello {
my( $self, $data, $acct ) = @_;
my $name = $data->{name};
$self->set_testfield(int(rand(10)); # set this to a random value each time
my $counter = $self->get_counter(); # this could be counted with a field, but I wanted to demo how easy it is to send objects across.
$counter->set_count( $counter->get_count() + 1 ); #increment the value in the counter
return { r => "hello there '$name'. I have said hello ".$counter->get_count()." times." };
}
1;