Struct FieldErrors 

pub struct FieldErrors { /* private fields */ }

A refused submission, keyed by the form key each error renders under.

One type for every source: the schema’s own rules (Schema::validate), a rejected upload, a failed uniqueness probe, and an app’s validate_record. The submit handler merges them without translating, and the form render reads each field’s own key from the result.

A key the rendered form owns: a control’s own key, or a Repeater group’s label. A key no slot owns has nowhere to render, and the submit handler refuses it as a declaration error rather than writing past it.

Implementations

impl FieldErrors

pub fn new() -> Self

No errors.

pub fn add(&mut self, key: impl Into<String>, message: impl Into<String>)

Refuse key with message.

pub fn add_required( &mut self, key: impl Into<String>, message: impl Into<String>, )

Refuse key as unanswered, with the message its control renders.

pub fn push(&mut self, error: FieldError)

Refuse error’s key with error, keeping the error’s own kind.

pub fn contains_key(&self, key: &str) -> bool

Whether any error renders under key.

pub fn first(&self, key: &str) -> Option<&FieldError>

The error key renders: the first one added, like the render’s own first-message slot.

pub fn is_empty(&self) -> bool

Whether nothing was refused.

pub fn iter(&self) -> impl Iterator<Item = &FieldError>

Every error, in the order it was added.

pub fn extend(&mut self, other: Self)

Append other’s errors after these.

pub fn replace(&mut self, other: Self)

Take other’s errors, dropping this collection’s own errors under every key other names.

A source that owns a key answers for it: a rejected upload replaces the “required” the emptied control would otherwise report.

Trait Implementations

impl Debug for FieldErrors

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

Formats the value using the given formatter.

impl Default for FieldErrors

fn default() -> Self

Returns the “default value” for a type.