title: Display values from relation table in xtragrid
body: <p>I am having a problem with displaying values from relation table. For example I have table: Person and there I have columns like <code>id</code>, <code>pet_id</code>, <code>name</code>. Another table is Dog with <code>id</code> and <code>name</code>. </p>
  
  <p>I would like to list all Persons with columns <code>id</code>, <code>pet_id</code> and <code>name</code>. But I like to have <code>name</code> of the dog in cell for column <code>pet_id</code> instead of <code>id</code> to Pet table. I created relation <code>Person_Dog_Relation</code> and in <code>FieldName</code> I chose from the list: <code>Person_Dog_Relation.name</code> but it didn't work. All cells in column <code>pet_id</code> are empty.</p>
  
  <p>How I can actually fill the cells for column <code>pet_id</code> with dog <code>name</code>?</p>