Struct ValidationError 

pub struct ValidationError {
    pub path: FieldPath,
    pub code: String,
    pub message: String,
    pub params: BTreeMap<String, ErrorParam>,
}

A single validation error with path, code, and message.

Example

use skp_validator_core::{ValidationError, FieldPath};

let error = ValidationError::new("email", "email.invalid", "Must be a valid email address")
    .with_param("value", "invalid-email");

Fields

path: FieldPath

Path to the field that failed validation

code: String

Error code for programmatic handling (e.g., “email.invalid”, “length.min”)

message: String

Human-readable error message

params: BTreeMap<String, ErrorParam>

Additional parameters for error formatting and i18n

Implementations

impl ValidationError

pub fn new( field: impl Into<String>, code: impl Into<String>, message: impl Into<String>, ) -> ValidationError

Create a new validation error.

Arguments

• field - The field name (will be converted to a FieldPath)
• code - Error code for programmatic handling
• message - Human-readable message

pub fn with_path( path: FieldPath, code: impl Into<String>, message: impl Into<String>, ) -> ValidationError

Create a new validation error with a full path.

pub fn root( code: impl Into<String>, message: impl Into<String>, ) -> ValidationError

Create a root-level error (empty path).

pub fn with_param( self, key: impl Into<String>, value: impl Into<ErrorParam>, ) -> ValidationError

Add a parameter to this error.

pub fn field_name(&self) -> Option<&str>

Get the field name (last segment of path)

Trait Implementations

impl Clone for ValidationError

fn clone(&self) -> ValidationError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValidationError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ValidationError

fn deserialize<__D>( __deserializer: __D, ) -> Result<ValidationError, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ValidationError

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

Formats the value using the given formatter.

impl Error for ValidationError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl FromIterator<ValidationError> for ValidationErrors

fn from_iter<I>(iter: I) -> ValidationErrors

where I: IntoIterator<Item = ValidationError>,

Creates a value from an iterator.

impl Serialize for ValidationError

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

where __S: Serializer,

Serialize this value into the given Serde serializer.