Meteor Template Syntax

_template_syntax.js

// A bit hacky...
// I'm using Underscore

// Make Template a function. Gets and extends template instances.
Template = _.extend(function(instance_name, instance_functions) {
  var instance = Template[instance_name];
  if (instance && _.isObject(instance_functions))
    _.extend(instance, instance_functions);
  return instance;
}, Template);


var do_chain = function(obj, func_name) {
  var func = obj[func_name]; // Don't be recursive;
  return function() {
    func.apply(obj, arguments);
    return obj;
  };
};

// Quite hacky...
// Make template instance helpers and events function return the template instance.
_.chain(Template).keys().each(function(instance_name) {
  if (instance_name[0] !== '_') { // Don't touch __define__, etc.
    var instance = Template[instance_name];
    instance['helpers'] = do_chain(instance, 'helpers');
    instance['events'] = do_chain(instance, 'events');
  }
});

syntax_example.js

// Oooh, chains and stuff.
Template('template-instance', {
  created: function() {},
  rendered: function() {},
  preserve: function() {},
  destroyed: function() {},
  someHelper: function() {}
})
.helpers({
})
.events({
});

// Don't think anything is broken...
Template['template-instance'].someHelper();
Template['template-instance']();

// Can still overwrite elsewhere.
Template['template-instance'].rendered = function(){this.breakEverything = "Nah."};