Struct tera::Context [−][src]
pub struct Context { /* fields omitted */ }
Expand description
The struct that holds the context of a template rendering.
Light wrapper around a BTreeMap
for easier insertions of Serializable
values
Implementations
Converts the val
parameter to Value
and insert it into the context.
Panics if the serialization fails.
let mut context = tera::Context::new(); context.insert("number_users", &42);
pub fn try_insert<T: Serialize + ?Sized, S: Into<String>>(
&mut self,
key: S,
val: &T
) -> TeraResult<()>
pub fn try_insert<T: Serialize + ?Sized, S: Into<String>>(
&mut self,
key: S,
val: &T
) -> TeraResult<()>
Converts the val
parameter to Value
and insert it into the context.
Returns an error if the serialization fails.
let mut context = Context::new(); // user is an instance of a struct implementing `Serialize` if let Err(_) = context.try_insert("number_users", &user) { // Serialization failed }
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);
Converts the context to a serde_json::Value
consuming the context.
Takes a serde-json Value
and convert it into a Context
with no overhead/cloning.
Takes something that impl Serialize and create 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.
Remove a key from the context, returning the value at the key if the key was previously inserted into the context.
Checks if a value exists at a specific index.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for Context
impl UnwindSafe for Context
Blanket Implementations
Mutably borrows from an owned value. Read more
pub fn vzip(self) -> V