Struct ValidationError

pub struct ValidationError {
    pub field: String,
    pub message: String,
}

Represents an error that occurs during validation of a struct’s field.

Each ValidationError contains the name of the field that failed validation and an associated error message explaining the reason for the failure.

Fields

field: String

The name of the field that failed validation.

message: String

A message describing the validation error.

Implementations

impl ValidationError

pub fn new(field: &str, message: &str) -> Self

Creates a new ValidationError for a specific field with a given message.

Arguments

• field - The name of the field that failed validation.
• message - A description of the validation error.

Examples

use struct_validation_core::ValidationError;

let error = ValidationError::new("username", "must not be empty");
assert_eq!(error.field, "username");
assert_eq!(error.message, "must not be empty");

pub fn add_prefix(&mut self, prefix: &str)

Adds a prefix to the field name, separated by a dot.

This can be useful for nested validation errors where the field is part of a larger struct.

Arguments

• prefix - The prefix to add to the field name.

Examples

use struct_validation_core::ValidationError;

let mut error = ValidationError::new("username", "must not be empty");
error.add_prefix("user");
assert_eq!(error.field, "user.username");

Trait Implementations

impl Debug for ValidationError

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

Formats the value using the given formatter.