Struct CustomValidator

pub struct CustomValidator {
    pub name: String,
    pub message: Option<String>,
    /* private fields */
}

Custom validator that accepts user-defined validation functions

Fields

name: String

Name/identifier for this custom validator

message: Option<String>

Custom error message

Implementations

impl CustomValidator

pub fn new<F>(name: impl Into<String>, validator: F) -> Self

where F: Fn(&Value, &str) -> ValidationResult<()> + Send + Sync + 'static,

Create a new custom validator with a sync function

pub fn message(self, message: impl Into<String>) -> Self

Set custom error message

pub fn name(&self) -> &str

Get the validator name

impl CustomValidator

Helper functions for common custom validations

pub fn one_of(name: impl Into<String>, allowed_values: Vec<String>) -> Self

Create a validator that checks if a string is one of the allowed values

pub fn not_one_of( name: impl Into<String>, forbidden_values: Vec<String>, ) -> Self

Create a validator that checks if a value is not in a list of forbidden values

pub fn contains(name: impl Into<String>, substring: String) -> Self

Create a validator that checks if a string contains a specific substring

pub fn not_contains(name: impl Into<String>, substring: String) -> Self

Create a validator that checks if a string does not contain a specific substring

pub fn starts_with(name: impl Into<String>, prefix: String) -> Self

Create a validator that checks if a string starts with a specific prefix

pub fn ends_with(name: impl Into<String>, suffix: String) -> Self

Create a validator that checks if a string ends with a specific suffix

pub fn array_length(name: impl Into<String>, expected_length: usize) -> Self

Create a validator that checks if an array has a specific length

pub fn array_all<F>(name: impl Into<String>, condition: F) -> Self

where F: Fn(&Value) -> bool + Send + Sync + 'static,

Create a validator that checks if all array elements pass a condition

Trait Implementations

impl Clone for CustomValidator

fn clone(&self) -> CustomValidator

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CustomValidator

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl ValidationRule for CustomValidator

fn validate<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, value: &'life1 Value, field: &'life2 str, ) -> Pin<Box<dyn Future<Output = ValidationResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Validate a single value

fn rule_name(&self) -> &'static str

Get the validation rule name/type

fn parameters(&self) -> Option<Value>

Get validation rule parameters/configuration as JSON