Quantity does not search with child
Since rd8a8505eba0c, the search method tries to use the SQL query with an "having" clause but the problem is that the query does not sum the children quantity (done in compute_quantities).
Since rd8a8505eba0c, the search method tries to use the SQL query with an "having" clause but the problem is that the query does not sum the children quantity (done in compute_quantities).