CartoDB: Adding another view of layer using Layer Actions and Toggle Buttons

Question

I would like to add multiple sublayers of the same table attached to a single layeraction in cartodb js. I written my webpage based on the following cartodb tutorial: http://docs.cartodb.com/tutorials/toggle_map_view.html. Essentially I would like to attach more than a single query to each button, something where you would populate sublayers[0] and [1] perhaps? Does anyone now how to do this?

var LayerActions = {
  all: function(){
    sublayers[0].setSQL("SELECT * FROM ne_10m_populated_places_simple");
    return true;
  },
  capitals: function(){
    sublayers[0].setSQL("SELECT * FROM ne_10m_populated_places_simple WHERE featurecla = 'Admin-0 capital'");
    return true;
  },
  megacities: function(){
    sublayers[0].setSQL("SELECT * FROM ne_10m_populated_places_simple WHERE megacity = 1");
    return true;
  }
}

Answer 1

You could create a sublayer inside an action. In this example, clicking 'capitals' button render megacities as well, in red:

var LayerActions = { 
capitals: function(){ 
    sublayers[0].setSQL("SELECT * FROM ne_10m_populated_places_simple WHERE featurecla = 'Admin-0 capital'"); 
    theLayer.createSubLayer({
      sql: "SELECT * FROM ne_10m_populated_places_simple WHERE megacity = 1",
      cartocss: '#table_name {marker-fill: #F00000;}'
    });
    return true; 
}, 

Being theLayer a global variable you set with createLayer layer result.