Trait feattle::FeattleValue

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

pub fn as_json(&self) -> Value

Convert the value to its JSON representation.

pub 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.

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

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

pub 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 FeattleValue for i8

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for i32

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for i16

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

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

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for usize

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for f32

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for bool

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for isize

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for f64

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for u16

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

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

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

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

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for u8

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for u32

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for i64

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

impl FeattleValue for u64

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub 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, 

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub 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, 

pub fn as_json(&self) -> Value

pub fn overview(&self) -> String

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

pub fn serialized_format() -> SerializedFormat

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