title: Angular <select> tag multiple value passing
body: <p>Am working on angular forms where I want to pass values of the select input field in my form.
  I have 2 select input field where one works properly when one works fine if I use </p>
  
  <pre><code>&lt;option [value]='user.id'&gt;&lt;/option&gt;
  </code></pre>
  
  <p>but the other one is not working since if I use, </p>
  
  <pre><code>&lt;option [value]='user'&gt;&lt;/option&gt;,
  </code></pre>
  
  <p>where user is an object. I cannot able to parse the value of the particular id of a user (i.e) user.user_id</p>
  
  <p>It returns me an object in the [object] [object] which i try to parse, event.target.value.user.user_id , but am getting undefined error. Can someone help me to solve how to parse the object or how to pass multiple values is [value] field</p>