title: primeNG pre set value is not working, it shows as [object object]
body: <p>I'm using a prime-NG drop-down with angular 4, belove I have mentioned important parts of my code. after I selected a drop-down item I save this "config.value" value in database. the problem occurs when I open this form again, I want to show selected dropdown item as selected . so i query the db and set "config.value" to saved item. but then dropdown shows it as [object object] . how should I change my code to fix this problem. </p>
  
  <p>html :</p>
  
  <pre><code>  &lt;p-dropdown [options] = "options" 
                [(ngModel)] = "config.value" 
                editable = true
                optionsLabel = "label"
                [formControlName] = "config.name" 
                [placeholder] = "config.label" 
                [filter] = "config.options['filter']"&gt;
    &lt;/p-dropdown&gt;
  </code></pre>
  
  <p>.ts </p>
  
  <pre><code>  ngOnInit() {
      this.myService.getOptions( this.orgId )
      .subscribe( result =&gt;{
        if (result[0]){
          for (let i =0; i &lt; result.length ; i++){
            this.options.push({label: result[i].name, value: result[i] })
          }
        }
      });
    }
  </code></pre>
  
  <p>result which return from service: </p>
  
  <pre><code>[
      {
          "name": "Sachithra",
          "phone"  : "xxxxxxxxx",
          "addreess": "yyyyyyyyy A" 
      },
      {
          "name": "wishwamal",
          "phone"  : "xxxxxxxxx",
          "addreess": "yyyyyyyy B" 
      }
  ]
  </code></pre>