javascript - Angularjs filter: get attribute 'name' by ID -

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in html have following. 

<div class="form-group">     <label class="col-sm-2 control-label">select plate:</label>        <div class="col-sm-5">             <select class="form-control m-b-sm" id="plateid" ng-change="getselectedplate(selectedplate.item)" ng-model="selectedplate.item" ng-options="plate (plate.id + ' - ' + plate.serial_number) plate in plates" required="true" />                 <option value=" ">----------</option>              </select>         </div>  </div>

upon selection of plate. have ng-model retrieves plate-type id well. 

 <div class="form-group">       <label for="input-readonly" class="col-sm-2 control-label">project name: </label>       <div class="col-sm-5">           <input type="text" class="form-control" id="input-readonly" value="{{selectedplate.item.plate_types_id.name}}" readonly>       </div>  </div>

now want instead of showing plate_types_id show name of plate type.

i new angularjs , unable figure simple thing out. me appreciated.


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