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
impl Context
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impl Context
[src]pub fn insert<T: Serialize + ?Sized, S: Into<String>>(
&mut self,
key: S,
val: &T
)
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pub fn insert<T: Serialize + ?Sized, S: Into<String>>(
&mut self,
key: S,
val: &T
)
[src]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<()>
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pub fn try_insert<T: Serialize + ?Sized, S: Into<String>>(
&mut self,
key: S,
val: &T
) -> TeraResult<()>
[src]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 }
pub fn extend(&mut self, source: Context)
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pub fn extend(&mut self, source: Context)
[src]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);
pub fn into_json(self) -> Value
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pub fn into_json(self) -> Value
[src]Converts the context to a serde_json::Value
consuming the context.
pub fn from_value(obj: Value) -> TeraResult<Self>
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pub fn from_value(obj: Value) -> TeraResult<Self>
[src]Takes a serde-json Value
and convert it into a Context
with no overhead/cloning.
pub fn from_serialize(value: impl Serialize) -> TeraResult<Self>
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pub fn from_serialize(value: impl Serialize) -> TeraResult<Self>
[src]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.
pub fn remove(&mut self, index: &str) -> Option<Value>
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pub fn remove(&mut self, index: &str) -> Option<Value>
[src]Remove a key from the context, returning the value at the key if the key was previously inserted into the context.
pub fn contains_key(&self, index: &str) -> bool
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pub fn contains_key(&self, index: &str) -> bool
[src]Checks if a value exists at a specific index.
Trait Implementations
impl StructuralPartialEq for Context
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Auto Trait Implementations
impl RefUnwindSafe for Context
impl Send for Context
impl Sync for Context
impl Unpin for Context
impl UnwindSafe for Context
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
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pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<T> ToOwned for T where
T: Clone,
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impl<T> ToOwned for T where
T: Clone,
[src]type Owned = T
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn to_owned(&self) -> T
[src]Creates owned data from borrowed data, usually by cloning. Read more
pub fn clone_into(&self, target: &mut T)
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pub fn clone_into(&self, target: &mut T)
[src]🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,