Module rules 

Built-in validation rules for Rusdantic.

Each rule module provides a validation function that the derive macro’s generated code calls at runtime. All functions follow a consistent pattern: they take the value to validate, constraint parameters, the field path, and a mutable reference to a ValidationErrors collection.

This design allows error accumulation (collect-all) rather than fail-fast behavior.

Re-exports

pub use contains::validate_contains;

pub use email::validate_email;

pub use length::validate_length;

pub use pattern::validate_pattern;

pub use range::validate_range;

pub use required::validate_required;

pub use url::validate_url;

Modules

contains

String contains validation rule.

email

Email format validation rule.

length

Length validation rule.

pattern

Regex pattern validation rule.

range

Numeric range validation rule.

required

Required field validation rule.

url

URL format validation rule.

Traits

AsStr

Trait for types that can be checked against a string pattern. Used by email, url, pattern, and contains validators.

HasLength

Trait for types that have a measurable length. Used by the length validator to work with both strings and collections.