Ember.js Undefined retrieving property of a model -


I found this model, where there is an array of site sites: 

  app topology = D. Mod. Extension ({name: DS.TRR ('string'), site: DS.ETT ()});   
 And I am trying to retrieve this array in a calculated asset:  
  return.filterBy ('name', This.get ('selectedName'.)) ('Site');   
 The filter returns the return value:  
  & lt; App Topology: ember411: 1 & gt;   
 But with the receiving ('site') it is undefined.   
 
 
 Are you sure that the filter does not return an array? Therefore  [and lieutenant; App Topology: ember411: 1>   
 Something like this will be done, see if it returns an orange, you can use the first object property:  
  return.filterBy ('name', this.get ('selectedName')). Get ('firstObject'). ('Site');

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