Trait Attributes 

pub trait Attributes {
    // Required methods
    fn attribute_names() -> &'static [&'static str];
    fn read_attribute(&self, name: &str) -> Option<Value>;
    fn write_attribute(
        &mut self,
        name: &str,
        value: Value,
    ) -> Result<(), AttributeError>;
    fn attributes(&self) -> HashMap<String, Value>;

    // Provided methods
    fn assign_attributes(
        &mut self,
        attrs: HashMap<String, Value>,
    ) -> Result<(), AttributeError> { ... }
    fn has_attribute(name: &str) -> bool { ... }
}

Dynamic attribute access for model types.

Implementations bridge strongly typed Rust fields to serde_json::Value so higher-level APIs can read and assign attributes generically.

Required Methods

fn attribute_names() -> &'static [&'static str]

Returns the canonical list of attribute names for the model type.

fn read_attribute(&self, name: &str) -> Option<Value>

Reads a single attribute as a dynamic JSON value.

fn write_attribute( &mut self, name: &str, value: Value, ) -> Result<(), AttributeError>

Writes a single attribute from a dynamic JSON value.

fn attributes(&self) -> HashMap<String, Value>

Returns every current attribute value keyed by its attribute name.

Provided Methods

fn assign_attributes( &mut self, attrs: HashMap<String, Value>, ) -> Result<(), AttributeError>

Assigns many attributes by delegating to Attributes::write_attribute.

fn has_attribute(name: &str) -> bool

Returns true when the provided attribute name belongs to the model.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors