Enum SessionFieldKind 

pub enum SessionFieldKind {
    Text,
    Int,
    Bool,
}

★ components IS NOT OPTIONAL CONTEXT — IT DECIDES THE ANSWER.

A -> View route’s template is checked by the server-side walk, and that walk refuses a component it CANNOT SEE (rightly: whether an unseen child renders on a server is unknown). This function used to call the no-list form, so every ## Route … -> View: that placed a component was quietly dropped from the router — the route never reached the dispatcher, and route("GET", "/report") came back as an unknown function, or as a 404 for a route the author can see in their file. Which is the whole shape a page is BUILT out of: a row, a card, a field.

So every caller hands over the components it can see. A caller that genuinely has none (a route checked on its own) passes an empty slice and gets the honest, conservative refusal. The kinds of field a ## Session may carry.

Deliberately three. A session rides in a COOKIE — a few hundred bytes a visitor holds and a browser sends on every request — so it is the wrong place for a list, a record or a map, and accepting one would be inviting a page to put its database in a header. Anything else is refused BY NAME at compile time rather than encoded as something plausible.

Variants

Text

Int

Bool

Trait Implementations

impl Clone for SessionFieldKind

fn clone(&self) -> SessionFieldKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SessionFieldKind

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

Formats the value using the given formatter.

impl PartialEq for SessionFieldKind

fn eq(&self, other: &SessionFieldKind) -> 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 Copy for SessionFieldKind

impl Eq for SessionFieldKind

impl StructuralPartialEq for SessionFieldKind