Enum Constraint 

pub enum Constraint {
    MinI64(i64),
    MaxI64(i64),
    MinU64(u64),
    MaxU64(u64),
    MinF64(f64),
    MaxF64(f64),
    MinLength(u64),
    MaxLength(u64),
    Regex(String),
    Email,
    Url,
    NonEmpty,
}

Declarative constraint on a field (0.6+). Evaluated on insert after type checks.

Variants

MinI64(i64)

Minimum inclusive for signed integers (Int64).

MaxI64(i64)

Maximum inclusive for signed integers (Int64).

MinU64(u64)

Minimum inclusive for unsigned integers (Uint64).

MaxU64(u64)

Maximum inclusive for unsigned integers (Uint64).

MinF64(f64)

Minimum inclusive for floats (Float64).

MaxF64(f64)

Maximum inclusive for floats (Float64).

MinLength(u64)

Minimum UTF-8 byte length (String) or element count (List).

MaxLength(u64)

Maximum UTF-8 byte length (String) or element count (List).

Regex(String)

Rust regex syntax (applied to String).

Email

Loose email shape check (String).

Url

http/https URL prefix check (String).

NonEmpty

Non-empty string, bytes, or list.

Trait Implementations

impl Clone for Constraint

fn clone(&self) -> Constraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Constraint

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

Formats the value using the given formatter.

impl PartialEq for Constraint

fn eq(&self, other: &Constraint) -> 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 StructuralPartialEq for Constraint