Struct ValidationErrors 

pub struct ValidationErrors { /* private fields */ }

A collection of validation errors from validating a struct.

This type aggregates all validation errors found during validation, allowing users to see all problems at once rather than fixing them one at a time. It implements both JSON serialization (for API responses) and human-readable Display (for CLI/logging output).

Example

use rusdantic_core::{ValidationErrors, ValidationError, PathSegment};

let mut errors = ValidationErrors::new();
assert!(errors.is_empty());

errors.add(ValidationError {
    path: vec![PathSegment::Field("email".to_string())],
    code: "email".to_string(),
    message: "invalid email format".to_string(),
    params: Default::default(),
});

assert_eq!(errors.len(), 1);
assert!(!errors.is_empty());

Implementations

impl ValidationErrors

pub fn new() -> Self

Create an empty error collection.

pub fn add(&mut self, error: ValidationError)

Add a single validation error to the collection.

pub fn merge(&mut self, other: ValidationErrors)

Merge another ValidationErrors into this one. All errors from other are moved into this collection.

pub fn is_empty(&self) -> bool

Check if no errors have been collected.

pub fn len(&self) -> usize

Return the number of collected errors.

pub fn errors(&self) -> &[ValidationError]

Get a reference to the collected errors.

pub fn into_errors(self) -> Vec<ValidationError>

Consume self and return the inner vector of errors.

pub fn field_errors(&self, field_name: &str) -> Vec<&ValidationError>

Get errors for a specific field path (first segment only).

Trait Implementations

impl Clone for ValidationErrors

fn clone(&self) -> ValidationErrors

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValidationErrors

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

Formats the value using the given formatter.

impl Default for ValidationErrors

fn default() -> Self

Returns the “default value” for a type.

impl Display for ValidationErrors

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

Display all errors in a human-readable format, one per line.

Example output:

Validation failed with 2 error(s):
  - username: must be between 3 and 20 characters (length)
  - email: invalid email format (email)

impl Error for ValidationErrors

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<'a> IntoIterator for &'a ValidationErrors

type Item = &'a ValidationError

The type of the elements being iterated over.

type IntoIter = Iter<'a, ValidationError>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl IntoIterator for ValidationErrors

type Item = ValidationError

The type of the elements being iterated over.

type IntoIter = IntoIter<ValidationError>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl Serialize for ValidationErrors

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

where __S: Serializer,

Serialize this value into the given Serde serializer.