Meteor.call and latency compensation - meteor

Question

I'm trying to understand why am I getting the error when calling a meteor server method. It works on the server side but it's throwing errors in the browser.
This is my server code in /server/methods.js file:
Meteor.methods({
getTicketSettings: function(){
var getTicketConfig = function(callback){
Assets.getText('ticketCustomizing.json', function(error, res){
if (error)
throw new Meteor.Error({error:'ticket-getCustomizing', reason:'No se pudo recuperar la configuración.'});
else callback && callback(null, JSON.parse(res));
});
}
var syncAssetRetrieve = Meteor.wrapAsync(getTicketConfig);
var result = syncAssetRetrieve();
return result;
},
});
And this is in my client/server code in /lib/initialization.js file:
App.config.tickets.tipos = new Mongo.Collection('tipos');
Meteor.startup(function(){
moment.locale('es');
var ticketSettingsObj = Meteor.call('getTicketSettings');
console.log(ticketSettingsObj);
_.map(ticketSettingsObj.tipos, function(tipo){
App.config.tickets.tipos.insert(tipo);
});
});
When I run my application I have the JSON object logged in the console but the browser is showing this error: Uncaught TypeError: Cannot read property 'tipos' of undefined in my /lib/initialization.js here:
_.map(ticketSettingsObj.tipos, function(tipo){
App.config.tickets.tipos.insert(tipo);
});
Obviously I misunderstood something but still wondering...

Answer 1

You need to pass a callback to the Meteor.call. The server can run it synchronously, blocking until it gets a return, but the client cannot so ticketSettingsObj will always be undefined.
See Meteor docs
Without error handling (and untested):
Meteor.call('getTicketSettings', function(error, result){
console.log(result);
_.map(result.tipos, function(tipo){
App.config.tickets.tipos.insert(tipo);
});
});

Answer 2

Do a console.log(App.config.tickets) and see if it returns a valid object. If it doesn't then you have defined the object App.config.tickets only on server side. If this is intentional and you only want this to be accessible on server side then then add a if(Meteor.isServer) or move the definition it to a file inside /server directory.