# relations.utils #### get\_relations\_sides\_and\_names ```python get_relations_sides_and_names(to_field: Type[BaseField], parent: "Model", child: "Model", child_name: str, virtual: bool, relation_name: str) -> Tuple["Model", "Model", str, str] ``` Determines the names of child and parent relations names, as well as changes one of the sides of the relation into weakref.proxy to model. **Arguments**: - `to_field (BaseField)`: field with relation definition - `parent (Model)`: parent model - `child (Model)`: child model - `child_name (str)`: name of the child - `virtual (bool)`: flag if relation is virtual - `relation_name ()`: **Returns**: `(Tuple["Model", "Model", str, str])`: parent, child, child_name, to_name