Vale stands for Valid Entity, and is a simple library that provides entity validation through either annotations, or through a Fluent-style implementation. At the core of the library is the vale::Validate trait, which implies that a piece of data can be validated. The library also offers supoort for the rocket webframework. If you're interested in adding support for other frameworks, do not hesitate to open a PR!
This example shows how to derive the validation trait ```rust use vale::Validate;
struct Entity {
#[validate(gt(0))]
id: i32,
#[validate(lenlt(5), with(addelement))]
others: Vec
fn add_element(v: &mut Vec
fn main() {
let mut e = get_entity();
if let Err(errs) = e.validate() {
println!("The following validations failed: {:?}", errs);
}
}
It is also possible to use fluent-style validation:
rust
struct Entity {
id: i32,
others: Vec
impl vale::Validate for Entity {
#[vale::ruleset]
fn validate(&mut self) -> vale::Result {
vale::rule!(self.id > 0, "id is nonpositive!");
vale::rule!(self.others.len() < 5, "Too many others");
}
}
```