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pub struct ValueField<'r> {
    pub name: NameView<'r>,
    pub value: &'r str,
}
Expand description

A form field with a string value.

Rocket preprocesses all form fields into either ValueFields or DataFields. All fields from url-encoded forms, and fields without Content-Types from multipart forms, are preprocessed as a ValueField.

Fields

name: NameView<'r>

The (decoded) name of the form field.

value: &'r str

The (decoded) value of the form field.

Implementations

Parse a field string, where both the key and value are assumed to be URL-decoded while preserving the = delimiter, into a ValueField.

This implements 3.2, 3.3 of section 5.1 of the WHATWG living standard.

Example
use rocket::form::ValueField;

let parsed = ValueField::parse("a cat=an A+ pet");
assert_eq!(parsed.name, "a cat");
assert_eq!(parsed.value, "an A+ pet");

let parsed = ValueField::parse("a cat is an A+ pet");
assert_eq!(parsed.name, "a cat is an A+ pet");
assert_eq!(parsed.value, "");

let parsed = ValueField::parse("cat.food=yum?");
assert_eq!(parsed.name, "cat");
assert_eq!(parsed.name.source(), "cat.food");
assert_eq!(parsed.value, "yum?");

Create a ValueField from a value, which is assumed to be URL-decoded. The field name will be empty.

This is equivalent to ValueField::from(("", value)). To create a ValueField from both a name and a value, use ValueField::from((name, value)).

Example
use rocket::form::ValueField;

let parsed = ValueField::from_value("A+=kitten");
assert_eq!(parsed.name, "");
assert_eq!(parsed.value, "A+=kitten");

Shift the name of self and return self with the shfited name.

See NameView::shift() for the details on name “shifting”.

Example
use rocket::form::ValueField;

let parsed = ValueField::parse("cat.food=yum?");
assert_eq!(parsed.name, "cat");
assert_eq!(parsed.name.source(), "cat.food");
assert_eq!(parsed.name.key_lossy(), "cat");

let shifted = parsed.shift();
assert_eq!(shifted.name, "cat.food");
assert_eq!(shifted.name.key_lossy(), "food");

Creates a complete unexpected value field Error from self.

The error will have the following properties:

Example
use rocket::form::ValueField;
use rocket::form::error::{ErrorKind, Entity};

let field = ValueField::parse("cat.food=yum?");
let error = field.unexpected();

assert_eq!(error.name.as_ref().unwrap(), "cat.food");
assert_eq!(error.value.as_ref().unwrap(), "yum?");
assert_eq!(error.kind, ErrorKind::Unexpected);
assert_eq!(error.entity, Entity::ValueField);

Creates a complete mising value field Error from self.

The error will have the following properties:

Example
use rocket::form::ValueField;
use rocket::form::error::{ErrorKind, Entity};

let field = ValueField::parse("cat.food=yum?");
let error = field.missing();

assert_eq!(error.name.as_ref().unwrap(), "cat.food");
assert_eq!(error.value.as_ref().unwrap(), "yum?");
assert_eq!(error.kind, ErrorKind::Missing);
assert_eq!(error.entity, Entity::ValueField);

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Converts to this type from the input type.

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Converts self into a collection.

Should always be Self

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

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

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more