Struct Validator 

pub struct Validator { /* private fields */ }

A builder that collects validation errors across multiple fields.

Call Validator::new (or Default::default) to start, chain field calls for each input to validate, then call check to obtain the result. Errors from all fields are gathered before returning — no short-circuit.

Example

use modo::validate::Validator;

let result = Validator::new()
    .field("name", &"Alice".to_string(), |f| f.required().min_length(1))
    .field("age", &25i32, |f| f.range(18..=120))
    .check();

Implementations

impl Validator

pub fn new() -> Self

Create a new empty validator.

pub fn field<T>( self, name: &str, value: &T, f: impl FnOnce(FieldValidator<'_, T>) -> FieldValidator<'_, T>, ) -> Self

Validate a single field. The closure receives a FieldValidator and should chain rule methods on it. Any rule failures are collected as errors for this field.

Works with any value type — string rules are available for T: AsRef<str>, numeric rules for T: PartialOrd + Display.

pub fn check(self) -> Result<(), ValidationError>

Finalize validation.

Errors

Returns ValidationError when one or more fields have errors.

Trait Implementations

impl Default for Validator

fn default() -> Self

Returns the “default value” for a type.