Enum under::FromFormError

#[non_exhaustive]
pub enum FromFormError {
    MissingField(&'static str),
    InvalidFormat(&'static str, &'static str, Error),
}

Available on crate feature from_form only.

The error type for parsing a form.

This is returned by FromForm::from_form. You should not need to implement these yourself.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

MissingField(&'static str)

A field was missing from the form. This is returned when a field is missing from the form, but is required. This includes only the expected field’s primary name - i.e., none of its aliases. However, if the field is renamed, the value will be the renamed value.

InvalidFormat(&'static str, &'static str, Error)

A field could not be parsed. This is returned when a field could not be parsed into the expected type. This includes the expected field’s primary name - i.e., none of its aliases (however, if the field is renamed, the value will be the renamed value). The second value is the type that was expected. The third value is the error returned by the parser.

Trait Implementations

impl Debug for FromFormError

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

Formats the value using the given formatter.

impl Display for FromFormError

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

Formats the value using the given formatter.

impl Error for FromFormError

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

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, demand: &mut Demand<'a>)

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

Provides type based access to context intended for error reports.