Struct Constraints 

pub struct Constraints {
    pub min: Option<i64>,
    pub max: Option<i64>,
    pub min_length: Option<u64>,
    pub max_length: Option<u64>,
    pub pattern: Option<String>,
}

Value constraints attached to a Field.

These are language-agnostic validation metadata: a numeric range, a string / array length bound, and a regular-expression pattern. They are propagated to the Zod and SurrealQL emitters (which produce runtime validators / database ASSERTs); the Rust and TypeScript type systems cannot express them, so those emitters drop constraints entirely.

Fields

min: Option<i64>

Inclusive lower bound for a numeric field (min=N).

max: Option<i64>

Inclusive upper bound for a numeric field (max=N).

min_length: Option<u64>

Inclusive minimum length for a string / array field (min_length=N).

max_length: Option<u64>

Inclusive maximum length for a string / array field (max_length=N).

pattern: Option<String>

A regular-expression pattern a string field must match (pattern="...").

Implementations

impl Constraints

pub fn is_empty(&self) -> bool

Whether no constraint is set.

Trait Implementations

impl Clone for Constraints

fn clone(&self) -> Constraints

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Constraints

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

Formats the value using the given formatter.

impl Default for Constraints

fn default() -> Constraints

Returns the “default value” for a type.

impl PartialEq for Constraints

fn eq(&self, other: &Constraints) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Constraints

impl StructuralPartialEq for Constraints