Struct tera::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 insert<T: Serialize + ?Sized>(&mut self, key: &str, val: &T)

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

Trait Implementations

impl Default for Context

fn default() -> Context

Returns the "default value" for a type.

impl PartialEq<Context> for Context

fn eq(&self, other: &Context) -> bool

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

fn ne(&self, other: &Context) -> bool

This method tests for !=.

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, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Serialize for Context

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

Serialize this value into the given Serde serializer.