shared-binding-object.js

// THIS DOESN'T WORK (TableController instances end up sharing the one binding object)
Smartgraphs.TableController = SC.ArrayController.extend({

  // ...
  dataset: null,
  
  /**
    Whether to display the table at all
  */
  showTableBinding: SC.Binding.not('*dataset.isStreaming'),
 //...
});


// THIS WORKS
Smartgraphs.TableController = SC.ArrayController.extend({

  // ...
  dataset: null,
  
  /**
    Whether to display the table at all
  */
  isStreamingBinding: '*dataset.isStreaming',
  showTable: function () {
    // SC.Binding.not() creates a single Binding object that ends up being shared by all TableConrtroller instances
    return !this.get('isStreaming');
  }.property('isStreaming').cacheable(),

 //...
});