title: Adding Followers to mail_followers widget automatically from hr.employee in odoo
body: <p>i'm writing a ticketing module and i need the assigned employee to a specific ticket to be automatically follow the ticket the thing as is it followers are added form res.partner model and i need to add them from hr.employee and res.partner</p>
  
  <p>here is my work around </p>
  
  <p>python:</p>
  
  <pre><code>class ticket(models.Model):
  
     _name = 'itmangement.ticket'
  
     _description = 'IT Ticket Management Process'
  
     _inherit = ['mail.thread', 'ir.needaction_mixin']
  
     #some other fields
  
     assigned_to_id = fields.Many2many('hr.employee', string="Assigned To")
  
     employee_message_follower_ids=fields.Many2many('hr.employee')
  
     @api.one
  
     def action_assign(self):
  
           self.employee_message_follower_ids =[(6,0,self.assigned_to_id.ids)]
  </code></pre>
  
  <p>and the view:</p>
  
  <pre><code>&lt;div class="oe_chatter"&gt;
      &lt;field name="message_follower_ids" widget="mail_followers"/&gt;
      &lt;field name="message_ids" widget="mail_thread"/&gt;
  &lt;/div&gt;                  
  &lt;div class="oe_chatter"&gt;
      &lt;field name="employee_message_follower_ids" widget="mail_followers"/&gt;
  &lt;/div&gt;
  </code></pre>