Thanks a lot for the answer. In fact, i have a colum setted rec_name. So the manyone will contain (id, rec_name colum) is it normal??

if you are seeing it at backend it is normal, because m2o is a field referencing value of another table, 'id' is primary key of foreign table, and column name is the name from which value will be taken, If you are seeing this on web client then it is not normal you have some thing wrong, if you want to access id of that value you can do like : object_name.m2o_field.id for value you can do : object_name.m2o_field.column_name(rec_name)