Trait FieldValidator 

trait FieldValidator {
    // Required method
    fn is_empty(&self) -> bool;
}

Trait for checking if a field is effectively empty.

is_empty(): Checks if the field has no meaningful value

• Used when backend is enabled to validate required fields
• None, Some(""), false, or "" are considered empty

Required Methods

fn is_empty(&self) -> bool

Check if the field is empty (has no meaningful value).

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FieldValidator for Option<SecretString>

Option fields: None or empty secret is empty For secrets, Some(“”) is treated as “not provided” for both checks

fn is_empty(&self) -> bool

impl FieldValidator for Option<String>

Option fields: None or empty content is empty

fn is_empty(&self) -> bool

impl FieldValidator for String

String fields: empty if the string is empty

fn is_empty(&self) -> bool

impl FieldValidator for bool

Bool fields: false is considered “empty”, true is “provided”

fn is_empty(&self) -> bool

Implementors