Struct RequiredRule 

pub struct RequiredRule {
    pub message: Option<String>,
}

Required (non-empty) validation rule.

Validates that a value is not empty.

Fields

message: Option<String>

Custom error message

Implementations

impl RequiredRule

pub fn new() -> Self

Create a new required rule.

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

Create a required rule with a custom message.

Trait Implementations

impl Clone for RequiredRule

fn clone(&self) -> RequiredRule

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RequiredRule

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

Formats the value using the given formatter.

impl Default for RequiredRule

fn default() -> RequiredRule

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RequiredRule

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<RequiredRule> for SerializableRule

fn from(rule: RequiredRule) -> Self

Converts to this type from the input type.

impl PartialEq for RequiredRule

fn eq(&self, other: &RequiredRule) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for RequiredRule

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T> ValidationRule<Option<T>> for RequiredRule

where T: Debug + Send + Sync,

fn validate(&self, value: &Option<T>) -> Result<(), RuleError>

Validate the value against this rule.

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

Get the rule name/code for error reporting.

fn default_message(&self) -> String

Get the default error message for this rule.

impl ValidationRule<String> for RequiredRule

fn validate(&self, value: &String) -> Result<(), RuleError>

Validate the value against this rule.

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

Get the rule name/code for error reporting.

fn default_message(&self) -> String

Get the default error message for this rule.

impl ValidationRule<str> for RequiredRule

fn validate(&self, value: &str) -> Result<(), RuleError>

Validate the value against this rule.

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

Get the rule name/code for error reporting.

fn default_message(&self) -> String

Get the default error message for this rule.

impl StructuralPartialEq for RequiredRule