Sablonöröklés

Sablonöröklés, often translated as template inheritance, is a powerful feature found in many templating engines, particularly in web development. It allows developers to define a base template that contains the common structure and layout of a web page, such as headers, footers, navigation bars, and CSS/JavaScript links. Then, other templates can "inherit" from this base template, effectively reusing its structure.

The core concept is to avoid repetition. Instead of copying and pasting the same HTML code into multiple files, a base template is created, and child templates only need to specify the unique content or sections that differ. This makes maintenance significantly easier, as changes to the common structure only need to be made in one place.

Child templates typically use specific tags or syntax provided by the templating engine to indicate where content should be inserted into the parent template's structure. These insertion points are often referred to as "blocks" or "sections." The templating engine then processes these templates, combining the base structure with the specific content of the child template to generate the final output.

Popular examples of templating engines that support sablonöröklés include Jinja2 (Python), Twig (PHP), and Django's templating language. This feature is a cornerstone of modern web development, promoting code reuse, consistency, and efficiency in building complex websites and applications.