Templatingia

Templatingia is a template engine and language designed to separate content from presentation in software applications. It provides a declarative syntax for embedding data and control flow within text, enabling dynamic output without embedding logic in presentation code. The design emphasizes safety, portability, and readability, with predictable rendering and built-in escaping to reduce injection risk.

Origin and scope: The project emerged in the open-source ecosystem in the early 2020s as a collaborative effort to unify templating patterns across languages. A reference implementation was released under a permissive license, with documentation and a modular plugin system supporting web templates, emails, and static sites.

Core features and syntax: Core features include template inheritance, named blocks, and macro-like fragments. Interpolation uses placeholders, while control directives handle loops and conditionals. An expression language enables data access and transformation, and built-in filters perform formatting and escaping. The system also supports custom tags and user-defined functions through a plugin API.

Rendering model and security: Templatingia executes templates in a sandboxed environment, with auto-escaping enabled by default for HTML and related contexts. Context data is passed as a dictionary-like object, and references resolve at render time. The engine emphasizes deterministic output and configurable escaping and checks for advanced use cases.

Applications and reception: Common uses include web pages, dynamic emails, and static site pipelines. The approach mirrors other modern templating systems, offering familiarity plus a flexible extension system. Some critics cite a learning curve and performance considerations in high-traffic deployments.