Tabular with PublishComposite

Hello,
sorry if my question is too easy, I'm starting with Meteor

I have the following configuration, but the columns with title "Ingrediente", "Updated By" are empty in the DataDatable

/app/lib/controllers/preco_ingredientes_controller.js

TabularTables = {};

Meteor.isClient && Template.registerHelper('TabularTables', TabularTables);

PrecoIngredientes.helpers({
  ingrediente: function () {
    console.log("PrecoIngredientes.helpers this.ingredienteId:" + JSON.stringify(this));
    return Ingredientes.find(this.ingredienteId).name;
    // return Ingrediente;
  },
  updated: function () {
    var user = Meteor.users.findOne({_id: this.updatedById});
    console.log("user:" + JSON.stringify(user));
    return user && user.name;
    // return Ingrediente;
  },

});

TabularTables.PrecoIngredientes = new Tabular.Table({
  name: "PrecoIngredientes",
  collection: PrecoIngredientes,
  pub: "precoIngredientes_Composite",
  columns: [
    {data: "quantidade", title: "Quantidade"},
    {data: "preco", title: "Preco"},
    {data: "ingrediente()", title: "Ingrediente"},
    {data: "updated()", title: "Updated By"},

  ]
});

/app/server/publish.js

Meteor.publishComposite('precoIngredientes_Composite',function (tableName, ids, fields) {
    check(tableName, String);
    check(ids, Array);
    check(fields, Match.Optional(Object));

    this.unblock(); // requires meteorhacks:unblock package
    return {
    find: function() {
       this.unblock(); // requires meteorhacks:unblock package
       console.log("Publish:" + JSON.stringify(PrecoIngredientes.findOne()));
        return PrecoIngredientes.find({});
    },  
    children: [ 
        {
            find: function(precoIngrediente) {
              this.unblock(); 
                return Meteor.users.find(
                    { _id: precoIngrediente.updatedById },
                    { limit: 1});
            }
        },
        {
            find: function(precoIngrediente) {

              // console.log("child2:");
              this.unblock(); 
                return Ingredientes.find({ _id: precoIngrediente.ingredienteId });
            }
        }
    ]
  }
});

/app/client/templates/preco_ingredientes/preco_list/preco_ingredientes_list_new.html

....
 {{> tabular table=TabularTables.PrecoIngredientes class="table table-striped table-bordered table-condensed"}}
....

/app/lib/collections/preco_ingredientes.js

PrecoIngredientes = new Mongo.Collection('precoIngredientes');

var schemasPrecoIngrediente = new SimpleSchema({
    ...,
    ingredienteId: {
    label: "Ingrediente",
    type:  String,
    optional: true,

    autoValue: function() {
      if ( this.isSet ){
        return this.value;
      } else {
        return '';
      }
    },
    autoform: {
      afFieldInput:{
        placeholder: 'Select One'
      },
      label: "Ingrediente",
      selectOnBlur: true,
      type: "select2",
      options: function() {
       var list = [];
       list.push({label: "", value: ""});
        var ingredientesList = Ingredientes.find();
        ingredientesList.map(function(ingrediente) {
          list.push({
            label: ingrediente.name,
            value: ingrediente._id
          });
        });
        return list;
      }
    }
  },
    updatedById: {
        type: String,
        label: "Updated by",
        autoValue: function() {
            if (!this.value)
                return this.userId;
        },
        optional: true
    },
...
});

Chrome Console

PrecoIngredientes.helpers this.ingredienteId:{"preco":1111.22,"quantidade":123,"_id":"g2NMe7DwCxPQWivD9"} preco_ingredientes_controller.js:53 
user:undefined

Server log from publishComposite:

I20151012-11:18:31.611(-3)? Publish:{"_id":"FWuxM5wKE7969kkMk","ingredienteId":"kwqRCm8kaNCofmPqN","quantidade":123,"preco":79.78,"createdAt":"2015-10-01T20:24:38.304Z","updatedAt":"2015-10-01T20:24:38.304Z","updatedById":"XBGiQDNdW25JdMHew"}

What am I doing wrong?

Thank you

Start with /app/lib/controllers/preco_ingredientes_controller.js and /app/server/publish.js, then reproduce the empty DataTable columns from the template in /app/client/templates/preco_ingredientes/preco_list/preco_ingredientes_list_new.html. Compare the client document and related records with the server publish log; done means the Ingrediente and Updated By columns display their expected values.