Trait juniper::FromInputValue

pub trait FromInputValue: Sized {
    fn from_input_value(v: &InputValue) -> Option<Self>;
}

Parse an unstructured input value into a Rust data type.

The conversion can fail, and must in that case return None. Implemented automatically by the convenience macro graphql_scalar! or by deriving GraphQLEnum.

Must be implemented manually when manually exposing new enums or scalars.

Required Methods

fn from_input_value(v: &InputValue) -> Option<Self>

Performs the conversion.

Implementations on Foreign Types

impl FromInputValue for String

fn from_input_value(v: &InputValue) -> Option<String>

impl FromInputValue for bool

fn from_input_value(v: &InputValue) -> Option<bool>

impl FromInputValue for i32

fn from_input_value(v: &InputValue) -> Option<i32>

impl FromInputValue for f64

fn from_input_value(v: &InputValue) -> Option<f64>

impl FromInputValue for ()

fn from_input_value(_: &InputValue) -> Option<()>

impl<T> FromInputValue for Box<T> where
    T: FromInputValue, 

fn from_input_value(v: &InputValue) -> Option<Box<T>>

impl<T> FromInputValue for Option<T> where
    T: FromInputValue, 

fn from_input_value(v: &InputValue) -> Option<Option<T>>

impl<T> FromInputValue for Vec<T> where
    T: FromInputValue, 

fn from_input_value(v: &InputValue) -> Option<Vec<T>>

impl FromInputValue for DateTime<FixedOffset>

fn from_input_value(v: &InputValue) -> Option<DateTime<FixedOffset>>

impl FromInputValue for DateTime<Utc>

fn from_input_value(v: &InputValue) -> Option<DateTime<Utc>>

impl FromInputValue for NaiveDate

fn from_input_value(v: &InputValue) -> Option<NaiveDate>

impl FromInputValue for NaiveDateTime

fn from_input_value(v: &InputValue) -> Option<NaiveDateTime>

impl FromInputValue for Url

fn from_input_value(v: &InputValue) -> Option<Url>

impl FromInputValue for Uuid

fn from_input_value(v: &InputValue) -> Option<Uuid>

Implementors

• impl FromInputValue for ID