Struct NumericalityValidator 

pub struct NumericalityValidator {
    pub only_integer: bool,
    pub greater_than: Option<f64>,
    pub greater_than_or_equal_to: Option<f64>,
    pub less_than: Option<f64>,
    pub less_than_or_equal_to: Option<f64>,
    pub equal_to: Option<f64>,
    pub other_than: Option<f64>,
    pub odd: bool,
    pub even: bool,
    pub allow_nil: bool,
    pub message: Option<String>,
    /* private fields */
}

Validates that an attribute contains a numeric value and optional comparisons.

Fields

only_integer: bool

Restricts the value to integers.

greater_than: Option<f64>

Requires the value to be greater than the provided bound.

greater_than_or_equal_to: Option<f64>

Requires the value to be greater than or equal to the provided bound.

less_than: Option<f64>

Requires the value to be less than the provided bound.

less_than_or_equal_to: Option<f64>

Requires the value to be less than or equal to the provided bound.

equal_to: Option<f64>

Requires the value to equal the provided bound.

other_than: Option<f64>

Requires the value to differ from the provided bound.

odd: bool

Requires the value to be odd.

even: bool

Requires the value to be even.

allow_nil: bool

Skips validation when the attribute value is missing or null.

message: Option<String>

Custom message used for non-numeric input.

Implementations

impl NumericalityValidator

pub fn new() -> Self

Creates a new numericality validator.

pub fn allow_blank(self) -> Self

Skips validation when the attribute value is blank.

pub fn on(self, contexts: Vec<ValidationContext>) -> Self

Restricts the validator to the provided contexts.

pub fn if_cond<F>(self, cond: F) -> Self

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

Runs the validator only when the predicate returns true.

pub fn unless_cond<F>(self, cond: F) -> Self

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

Skips the validator when the predicate returns true.

pub fn only_integer(self) -> Self

Restricts values to integers.

pub fn greater_than(self, bound: f64) -> Self

Requires the value to be greater than bound.

pub fn greater_than_or_equal_to(self, bound: f64) -> Self

Requires the value to be greater than or equal to bound.

pub fn less_than(self, bound: f64) -> Self

Requires the value to be less than bound.

pub fn less_than_or_equal_to(self, bound: f64) -> Self

Requires the value to be less than or equal to bound.

pub fn equal_to(self, bound: f64) -> Self

Requires the value to equal bound.

pub fn other_than(self, bound: f64) -> Self

Requires the value to differ from bound.

pub fn odd(self) -> Self

Requires the value to be odd.

pub fn even(self) -> Self

Requires the value to be even.

pub fn allow_nil(self) -> Self

Skips validation for missing or null values.

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

Overrides the default non-numeric failure message.

Trait Implementations

impl Clone for NumericalityValidator

fn clone(&self) -> NumericalityValidator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NumericalityValidator

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

Formats the value using the given formatter.

impl Default for NumericalityValidator

fn default() -> NumericalityValidator

Returns the “default value” for a type.

impl Validator for NumericalityValidator

fn validate(&self, attribute: &str, value: Option<&Value>, errors: &mut Errors)

Validates a single attribute value, adding any produced errors.

fn name(&self) -> &str

Returns the validator’s display name.

fn options(&self) -> &ValidatorOptions

Returns the common runtime options for this validator.

fn validate_with_attrs( &self, attribute: &str, value: Option<&Value>, _attrs: &dyn Fn(&str) -> Option<Value>, errors: &mut Errors, )

Validates a single attribute with access to sibling attributes when needed.