title: Computed field as a list in Odoo 10
body: <p>I have a code that fetches some information on the Internet and returns it as a Python list. I want to display (without saving in the database) in Odoo tree view. </p>
  
  <p>For this, I created a computed field as follow:</p>
  
  <pre><code>created_time = fields.Char(compute='_compute_created_time')
  
  @api.multi
  def _compute_created_time(self):
      my_data = self.my_internet_data()
      created_time_list = []
  
      for created_times in my_data:
          created_time_list.append(created_times['created_time'])
  
      self.created_time = created_time_list
  </code></pre>
  
  <p>When the tree view is rendered it display a single row with all the data in it. This is not the way I want.</p>
  
  <p>I want to display each single data in the list in its own row. I believe for this to happen I must not use <b>fields.Char()</b> as the field type. So, what field type is there for me to use or any other solution?</p>