Skip to content

Associations

Association helpers provide descriptor-style convenience attributes for query expressions and model access.

ormdantic.association.association_proxy 

association_proxy(relationship, attribute)

Descriptor that proxies through a relationship attribute.

Source code in ormdantic/association.py 
def __init__(self, relationship: str, attribute: str) -> None:
    self.relationship = relationship
    self.attribute = attribute
    self.expression_func: Callable[[type[Any]], Any] | None = None

relationship instance-attribute 

relationship = relationship

attribute instance-attribute 

attribute = attribute

expression_func instance-attribute 

expression_func = None

expression 

expression(func)

Attach a class-level query expression for this proxy.

Source code in ormdantic/association.py 
def expression(self, func: Callable[[type[Any]], Any]) -> "association_proxy":
    """Attach a class-level query expression for this proxy."""
    self.expression_func = func
    return self

ormdantic.association.hybrid_property 

hybrid_property(func)

Create a hybrid attribute descriptor.

Source code in ormdantic/association.py 
def hybrid_property(func: Callable[[Any], Any]) -> hybrid_attribute:
    """Create a hybrid attribute descriptor."""
    return hybrid_attribute(func)