Template inheritance
Template inheritance is a templating pattern in which child templates reuse and extend a shared parent template by filling or overriding defined sections.
The Well-Grounded Python Developer: How the pros use Python and Flask
Template inheritance is a templating pattern in which a child template extends a parent template and overrides or fills named sections.
- How it is used
- Reuses shared HTML structure across web pages instead of copying banners, footers, and boilerplate.
- How deep it goes
- Shows a parent layout with named blocks and a child that extends it; does not explore inheritance edge cases.
- Examples
- Uses a home page with a shared banner and footer, plus a content block showing time, visits, and banner colors.
- What you can do after
- Apply it via Jinja2 to separate a shared page layout from page-specific content.
Go in Practice, Second Edition
Template inheritance is a composition pattern in which an extending template fills or overrides sections defined by a shared base template.
- How it is used
- Shares a top-level HTML layout across pages while allowing page-specific sections to fill or override it.
- How deep it goes
- Works through base and extending templates, directives, and Go setup; stops short of claiming full template-system inheritance.
- Examples
- Demonstrates a user page and a general page, including an optional styles override.
- What you can do after
- Build it from scratch with html/template by pairing a base with page-specific definitions and executing the named template.
Read how Go in Practice, Second Edition explains template inheritance →
Django in Action
Template inheritance is a templating technique in which a child template extends a parent template and overrides or fills its defined blocks.
- How it is used
- Organizes repeated HTML structure across Django pages while keeping individual page templates short.
- How deep it goes
- Explains named blocks, parent-child hierarchy, overrides, view selection, and shared styling without descending into template-engine internals.
- Examples
- Uses RiffMates base.html and news2.html to demonstrate title overrides, content blocks, news loops, and shared styling.
- What you can do after
- Apply it via Django templates to build reusable page layouts and override only page-specific regions.
Related concepts
- block directiveuses · A block directive defines a template section with default content and immediately executes that section when invoked.
- templateuses · A template is a reusable structure with fixed elements and variable parts for creating or generating similar content, outputs, or artifacts.
- inheritanceequivalent to · Inheritance is a mechanism by which a child type or element receives properties, values, or behavior from a parent, subject to system rules and possible overrides.
- html/template packageused by · The Go html/template package parses and executes HTML templates with data substitutions, control logic, and contextual escaping of HTML-sensitive content.
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