Trait JsonIndex 

pub trait JsonIndex: Sealed { }

Available on crate features sqlite or postgres_backend only.

A marker trait indicating which types can be used as index into a json field

Implementations on Foreign Types

impl JsonIndex for i32

impl JsonIndex for String

impl<'a> JsonIndex for &'a str

Implementors

impl<T> JsonIndex for T

where T: Expression, T::SqlType: TextOrInteger,