Hugo _index.md function

Hugo _index.md

In Hugo, the _index.md file plays a crucial role in organizing and displaying content for sections, taxonomies, and terms. Here are some key points about using _index.md:

Location and Purpose: An _index.md file is used to add content and front matter to home, section, taxonomy, and term pages. It should be placed in the relevant directory within the content folder. For example, to add content and front matter to the home page, you would place _index.md in the top-level content directory.
Rendering: The content and front matter in _index.md are rendered by specific templates. For instance, the home page might use layouts/index.html, while section pages use templates like layouts/section/post.html.
Structure and Nesting: Sections can be nested as deeply as needed. However, to ensure full navigability, the lowest-level section must include a content file, typically named _index.md.
Content Type and Layouts: The top-level folders in the content directory are special in Hugo and determine the content type and associated layouts. For example, content/posts/_index.md and content/categories/_index.md are used to manage posts and categories, respectively.
Content Management: If you need to use a different file name for the homepage content, such as intro.md, you can use Hugo’s GetPage function in your template to render the content from that file. For example:
```
{{- (.Site.GetPage "intro").Content -}}
```
Page Bundles: _index.md files are part of branch bundles, which allow for nested content and navigable URLs for subfolders. In contrast, leaf bundles use index.md and do not create navigable URLs for sibling pages.