Struct ConstraintError 

pub struct ConstraintError {
    pub kind: ConstraintKind,
    pub constraint: String,
    pub field: Option<&'static str>,
}

A database constraint violation resolved to entity metadata.

Produced by repositories generated with #[entity(typed_constraints)]: the generated code matches the violated constraint name against the set of constraints it created (unique columns, foreign keys, unique indexes) and hands callers a structured error instead of a raw driver error.

The repository Error type must implement From<ConstraintError> in addition to From<sqlx::Error>.

Fields

kind: ConstraintKind

What kind of constraint was violated.

constraint: String

Constraint name as reported by the database.

field: Option<&'static str>

Entity field the constraint maps to, when known.

Trait Implementations

impl Clone for ConstraintError

fn clone(&self) -> ConstraintError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConstraintError

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

Formats the value using the given formatter.

impl Display for ConstraintError

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

Formats the value using the given formatter.

impl Eq for ConstraintError

impl Error for ConstraintError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for ConstraintError

fn eq(&self, other: &ConstraintError) -> 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 ConstraintError