Struct sapper_std::Context

pub struct Context { /* fields omitted */ }

The struct that holds the context of a template rendering.

Light wrapper around a BTreeMap for easier insertions of Serializable values

Methods

impl Context

pub fn new() -> Context

Initializes an empty context

pub fn add<T>(&mut self, key: &str, val: &T) where
    T: Serialize, 

Converts the val parameter to Value and insert it into the context

let mut context = Context::new();
// user is an instance of a struct implementing `Serialize`
context.add("number_users", 42);

pub fn extend(&mut self, source: Context)

Appends the data of the source parameter to self overwriting existing keys. The source context will be dropped

let mut target = Context::new();
target.add("a", 1);
target.add("b", 2);
let mut source = Context::new();
source.add("b", 3);
source.add("d", 4);
target.extend(source);

Trait Implementations

impl Serialize for Context

fn serialize<S>(
    &self,
    serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.

impl Clone for Context

fn clone(&self) -> Context

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Context

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Context

fn default() -> Context

Returns the "default value" for a type.