Struct Attributes 

pub struct Attributes { /* private fields */ }

An object under construction, with the conditionals a resource needs.

The point of when is the key that is absent, not null. A client told "permissions": null has to decide what null means; a client not told about permissions at all knows it is not allowed to see them.

Implementations

impl Attributes

pub fn set(self, key: &str, value: impl Into<Json>) -> Self

pub fn when( self, condition: bool, key: &str, value: impl FnOnce() -> Json, ) -> Self

Include the key only when the condition holds. The value is computed lazily, so it may be expensive or may only be valid when the condition is true.

pub fn when_some<T: Into<Json>>(self, key: &str, value: Option<T>) -> Self

Include the key only when there is a value — Some, not None.

pub fn merge(self, other: Json) -> Self

Merge another object’s keys in — for a nested resource, or a shared set of timestamps.

pub fn finish(self) -> Json

Trait Implementations

impl Clone for Attributes

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Attributes

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Attributes

fn default() -> Self

Returns the “default value” for a type.