Crate tera

The tera templating engine library, reexported.

Tera

A powerful, fast and easy-to-use template engine for Rust

This crate provides an implementation of the Tera template engine, which is designed for use in Rust applications. Inspired by Jinja2 and Django templates, Tera provides a familiar and expressive syntax for creating dynamic HTML, XML, and other text-based documents. It supports template inheritance, variable interpolation, conditionals, loops, filters, and custom functions, enabling developers to build complex applications with ease.

See the site for more information and to get started.

Features

• High-performance template rendering
• Safe and sandboxed execution environment
• Template inheritance and includes
• Expressive and familiar syntax
• Extensible with custom filters and functions
• Automatic escaping of HTML/XML by default
• Strict mode for enforcing variable existence
• Template caching and auto-reloading for efficient development
• Built-in support for JSON and other data formats
• Comprehensive error messages and debugging information

Example

use tera::Tera;

// Create a new Tera instance and add a template from a string
let mut tera = Tera::new("templates/**/*").unwrap();
tera.add_raw_template("hello", "Hello, {{ name }}!").unwrap();
// Prepare the context with some data
let mut context = tera::Context::new();
context.insert("name", "World");

// Render the template with the given context
let rendered = tera.render("hello", &context).unwrap();
assert_eq!(rendered, "Hello, World!");

Getting Started

Add the following to your Cargo.toml file:

[dependencies]
tera = "1.0"

Then, consult the official documentation and examples to learn more about using Tera in your Rust projects.

Modules

• ast
  The AST of Tera
• helpers
  Re-export some helper fns useful to write filters/fns/tests

Macros

• try_get_value
  Helper macro to get real values out of Value while retaining proper errors in filters

Structs

• Context
  The struct that holds the context of a template rendering.
• Error
  The Error type
• Map
  Represents a JSON key/value type.
• Number
  Represents a JSON number, whether integer or floating point.
• Template
  This is the parsed equivalent of a template file. It also does some pre-processing to ensure it does as little as possible at runtime Not meant to be used directly.
• Tera
  Main point of interaction in this library.

Enums

• ErrorKind
  The kind of an error (non-exhaustive)
• Value
  Represents any valid JSON value.

Traits

• Filter
  The filter function type definition
• Function
  The global function type definition
• Test
  The tester function type definition

Functions

• dotted_pointer
  Lookups a dotted path in a json value contrary to the json slash pointer it’s not allowed to begin with a dot
• escape_html
  Escape HTML following OWASP
• from_value
  Interpret a serde_json::Value as an instance of type T.
• get_json_pointerDeprecated
  Converts a dotted path to a json pointer one
• to_value
  Convert a T into serde_json::Value which is an enum that can represent any valid JSON data.

Type Aliases

• Result
  Convenient wrapper around std::Result.