Struct rocket_dyn_templates::handlebars::RenderContext

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pub struct RenderContext<'reg, 'rc> { /* private fields */ }
Expand description

The context of a render call

This context stores information of a render and a writer where generated content is written to.

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impl<'reg, 'rc> RenderContext<'reg, 'rc>
where 'reg: 'rc,

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pub fn new(root_template: Option<&'reg String>) -> RenderContext<'reg, 'rc>

Create a render context

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pub fn push_block(&mut self, block: BlockContext<'rc>)

Push a block context into render context stack. This is typically called when you entering a block scope.

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pub fn pop_block(&mut self)

Pop and drop current block context. This is typically called when leaving a block scope.

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pub fn block(&self) -> Option<&BlockContext<'rc>>

Borrow a reference to current block context

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pub fn block_mut(&mut self) -> Option<&mut BlockContext<'rc>>

Borrow a mutable reference to current block context in order to modify some data.

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pub fn context(&self) -> Option<Rc<Context>>

Get the modified context data if any

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pub fn set_context(&mut self, ctx: Context)

Set new context data into the render process. This is typically called in decorators where user can modify the data they were rendering.

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pub fn evaluate( &self, context: &'rc Context, relative_path: &str ) -> Result<ScopedJson<'rc>, RenderError>

Evaluate a Json path in current scope.

Typically you don’t need to evaluate it by yourself. The Helper and Decorator API will provide your evaluated value of their parameters and hash data.

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pub fn get_partial(&self, name: &str) -> Option<&Template>

Get registered partial in this render context

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pub fn set_partial(&mut self, name: String, partial: &'rc Template)

Register a partial for this context

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pub fn remove_partial(&mut self, name: &str)

Remove a registered partial

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pub fn is_current_template(&self, p: &str) -> bool

Test if given template name is current template.

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pub fn register_local_helper( &mut self, name: &str, def: Box<dyn HelperDef + Send + Sync + 'rc> )

Register a helper in this render context. This is a feature provided by Decorator where you can create temporary helpers.

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pub fn unregister_local_helper(&mut self, name: &str)

Remove a helper from render context

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pub fn get_local_helper( &self, name: &str ) -> Option<Rc<dyn HelperDef + Send + Sync + 'rc>>

Attempt to get a helper from current render context.

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pub fn get_current_template_name(&self) -> Option<&'rc String>

Returns the current template name. Note that the name can be vary from root template when you are rendering from partials.

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pub fn set_current_template_name(&mut self, name: Option<&'rc String>)

Set the current template name.

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pub fn get_root_template_name(&self) -> Option<&'reg String>

Get root template name if any. This is the template name that you call render from Handlebars.

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pub fn is_disable_escape(&self) -> bool

Get the escape toggle

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pub fn set_disable_escape(&mut self, disable: bool)

Set the escape toggle. When toggle is on, escape_fn will be called when rendering.

Trait Implementations§

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impl<'reg, 'rc> Clone for RenderContext<'reg, 'rc>

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fn clone(&self) -> RenderContext<'reg, 'rc>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'reg, 'rc> Debug for RenderContext<'reg, 'rc>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'reg, 'rc> Freeze for RenderContext<'reg, 'rc>

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impl<'reg, 'rc> !RefUnwindSafe for RenderContext<'reg, 'rc>

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impl<'reg, 'rc> !Send for RenderContext<'reg, 'rc>

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impl<'reg, 'rc> !Sync for RenderContext<'reg, 'rc>

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impl<'reg, 'rc> Unpin for RenderContext<'reg, 'rc>

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impl<'reg, 'rc> !UnwindSafe for RenderContext<'reg, 'rc>

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