Enum FieldConstraint 

pub enum FieldConstraint {
    Primary,
    Auto,
    Required,
    Optional,
    Unique,
    Max(u32),
    Min(u32),
    Default(String),
    Index,
}

Constraints on a model field.

Variants

Primary

Auto

Required

Optional

Unique

Max(u32)

Min(u32)

Default(String)

Index

Database index hint for query performance.

Trait Implementations

impl Clone for FieldConstraint

fn clone(&self) -> FieldConstraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldConstraint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FieldConstraint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for FieldConstraint

impl PartialEq for FieldConstraint

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FieldConstraint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FieldConstraint