Function validate_insert 

pub fn validate_insert<S, T>(value: &T) -> Result<(), VldSqlxError>
where
    S: VldParse,
    T: Serialize,

Validate a value against schema S before inserting.

use vld::prelude::*;

vld::schema! {
    #[derive(Debug)]
    pub struct ItemSchema {
        pub name: String => vld::string().min(1),
        pub qty: i64 => vld::number().int().min(0),
    }
}

#[derive(serde::Serialize)]
struct NewItem { name: String, qty: i64 }

let item = NewItem { name: "Widget".into(), qty: 5 };
vld_sqlx::validate_insert::<ItemSchema, _>(&item).unwrap();