Trait dynomite::FromAttributes

pub trait FromAttributes: Sized {
    fn from_attrs(attrs: &mut Attributes) -> Result<Self, AttributeError>;
}

A type capable of being produced from a set of string keys and AttributeValues. Generally, you should not implement this trait manually. Use #[derive(Attributes/Item)] to generate the proper implementation instead.

Required methods

fn from_attrs(attrs: &mut Attributes) -> Result<Self, AttributeError>

Returns an instance of of a type resolved at runtime from a collection of a String keys and AttributeValues. If an instance can not be resolved and AttributeError will be returned. The implementations of this method should remove the relevant key-value pairs from the map to consume them.

This is needed to support #[dynomite(flatten)] without creating temporary hash maps.

Implementations on Foreign Types

impl<A: Attribute> FromAttributes for HashMap<String, A>

Coerces a homogeneous HashMap of attribute values into a homogeneous Map of types that implement Attribute

fn from_attrs(attrs: &mut Attributes) -> Result<Self, AttributeError>

impl<A: Attribute> FromAttributes for BTreeMap<String, A>

Coerces a homogenious Map of attribute values into a homogeneous BTreeMap of types that implement Attribute

fn from_attrs(attrs: &mut Attributes) -> Result<Self, AttributeError>

Implementors