Struct Context

impl Context

fn new() -> Self

Initializes an empty context

fn from_serialize<T: Serialize + ?Sized>(value: &T) -> TeraResult<Self>

Takes something that implements Serialize and creates a context with it. Meant to be used if you have a hashmap or a struct and don't want to insert values one by one in the context.

fn insert<S: Into<Cow<'static, str>>, T: Serialize + ?Sized>(&mut self, key: S, val: &T)

Converts the val parameter to Value and insert it into the context. This can panic if the value cannot be serialised.

# use tera::Context;
let mut context = tera::Context::new();
context.insert("number_users", &42);

fn insert_value<S: Into<Cow<'static, str>>>(&mut self, key: S, val: Value)

In case you already have a Value you want to insert

fn remove(&mut self, key: &str) -> Option<Value>

Remove a key from the context, returning the value at the key if the key was previously inserted into the context.

fn extend(&mut self, source: Context)

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

# use tera::Context;
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);

fn contains_key(&self, key: &str) -> bool

Checks if a value exists for given key.

fn get(&self, key: &str) -> Option<&Value>

Returns the value at the given key