Trait feattle::FeattleValue

pub trait FeattleValue: Debug {
    fn as_json(&self) -> Value;
    fn overview(&self) -> String;
    fn try_from_json(value: &Value) -> Result<Self, FromJsonError>;
    fn serialized_format() -> SerializedFormat;
}

The base trait for types that can be used for feattles.

This lib already implements this trait for many base types from the std lib, but the user can make their own types compatible by providing their own logic.

For types that are string based, it suffices to implement the somewhat simpler FeattleStringValue trait.

Required methods

fn as_json(&self) -> Value

Convert the value to its JSON representation.

fn overview(&self) -> String

Return a short overview of the current value. This is meant to give an overall idea of the actual value. For example, it can choose to display only the first 3 items of a large list.

fn try_from_json(value: &Value) -> Result<Self, FromJsonError>

Parse from a JSON representation of the value, if possible.

fn serialized_format() -> SerializedFormat

Return a precise description of a feattle type. This will be consumed, for example, by the UI code to show an appropriate HTML form in the admin panel.

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Implementations on Foreign Types

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

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<Option<T>, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for u8

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<u8, FromJsonError>

fn serialized_format() -> SerializedFormat

impl<K, V> FeattleValue for BTreeMap<K, V> where
    K: FeattleStringValue + Ord,
    V: FeattleValue,
    <K as FromStr>::Err: Error,
    <K as FromStr>::Err: Send,
    <K as FromStr>::Err: Sync,
    <K as FromStr>::Err: 'static, 

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<BTreeMap<K, V>, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for bool

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<bool, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for u16

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<u16, FromJsonError>

fn serialized_format() -> SerializedFormat

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

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<Vec<T>, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for u64

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<u64, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for i64

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<i64, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for usize

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<usize, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for f64

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<f64, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for i16

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<i16, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for f32

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<f32, FromJsonError>

fn serialized_format() -> SerializedFormat

impl<T> FeattleValue for BTreeSet<T> where
    T: FeattleValue + Ord, 

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<BTreeSet<T>, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for isize

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<isize, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for i8

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<i8, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for u32

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<u32, FromJsonError>

fn serialized_format() -> SerializedFormat

impl FeattleValue for i32

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<i32, FromJsonError>

fn serialized_format() -> SerializedFormat

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Implementors

impl<T> FeattleValue for T where
    T: FeattleStringValue,
    <T as FromStr>::Err: Error,
    <T as FromStr>::Err: Send,
    <T as FromStr>::Err: Sync,
    <T as FromStr>::Err: 'static, 

fn as_json(&self) -> Value

fn overview(&self) -> String

fn try_from_json(value: &Value) -> Result<T, FromJsonError>

fn serialized_format() -> SerializedFormat

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