docusaurus/docs/api-pages.md
Frank Li a1e20736da Add Pages and Styles API doc (#67)
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api-pages Pages and Styles

Docusaurus provides support for writing pages as React components inside the website/pages folder which will share the same header, footer, and styles as the rest of the site.

Urls for Pages

Any .js files in website/pages will be rendered to static html using the path of the file after "pages". Files in website/pages/en will also get copied out into pages and will OVERRIDE any files of the same name in pages. For example, the page for the website/pages/en/help.js file will be found at the url ${baseUrl}en/help.js as well as the url ${baseUrl}help.js, where ${baseUrl} is the baseUrl field set in your siteConfig.js file.

Page Require Paths

Docusaurus provides a few useful React components for users to write their own pages, found in the CompLibrary module. This module is provided as part of Docusaurus in node_modules/docusaurus, so to access it, pages in the pages folder are temporarily copied into node_modules/docusaurus when rendering to static html. As seen in the example files, this means that a user page at pages/en/index.js uses a require path to "../../core/CompLibrary.js" to import the provided components.

What this means to the user is that if you wish to use the CompLibrary module, make sure the require path is set correctly. For example, a page at page/mypage.js would use a path "../core/CompLibrary.js".

If you wish to use your own components inside the website folder, use process.cwd() which will refer to the website folder to construct require paths. For example, if you add a component to website/core/mycomponent.js, you can use the require path, "process.cwd() + /core/mycomponent.js".

Provided Components

Docusaurus provides the following components in CompLibrary:

CompLibrary.Marked

A React component that parses Markdown to html.

Example:

const Marked = CompLibrary.Marked;

<Marked>[Markdown syntax for a link](http://www.example.com)</Marked>

CompLibrary.Container

A React container component using Docusaurus styles. Has optional padding and background color attributes that you can configure.

Padding choices: all, bottom, left, right, top.
Background choices: dark, highlight, light.

Example:

<Container padding={["bottom", "top"]} background="light">
  ...         
</Container>

CompLibrary.GridBlock

A React component to organize text and images.

The align attribute determines text alignment. Text alignment defaults to left and can be set to center or right.

The layout attribute determines number of column sections per GridBlock. layout defaults to twoColumn and can be set to threeColumn or fourColumn as well.

The contents attribute is an array containing the contents of each section of the GridBlock. Each content object can have the following fields:

  • content for the text of this section, which is parsed from markdown
  • image for the path to an image to display
  • imageAlign field for image alignment relative to the text, which defaults to top and can be set to bottom, left, or right
  • title for the title to display for this section, which is parsed from markdown
  • imageLink for a link destination from clicking the image

Example:

<GridBlock
  align="center"
  contents={[
    {
      content: "Learn how to use this project",
      image: siteConfig.baseUrl + "img/learn.png",
      title: `[Learn](${siteConfig.baseUrl}docs/tutorial.html)`,
      imageLink: siteConfig.baseUrl + "docs/tutorial.html"
    },
    {
      content: "Questions gathered from the community",
      image: siteConfig.baseUrl + "img/faq.png",
      imageAlign: "top",
      title: "Frequently Asked Questions"
    },
    {
      content: "Lots of documentation is on this site",
      title: "More"
    }
  ]}
  layout="threeColumn"
/>

More examples of how these components are used can be found in the generated example files as well as in Docusaurus's own repo for its website set-up.

Translating Strings

When translations are enabled, any pages inside website/pages/en will be translated for all enabled languages. Urls for non-English pages will use their language tags as specified in the languages.js file. E.g. The url for a French page of website/pages/en/help.js would be found at ${baseUrl}fr/help.html.

When writing pages that you wish to translate, wrap any strings to be translated inside a <translate> tag. e.g.,

<p><translate>I like translations</translate></p>

You can also provide an optional description attribute to provide context for translators. e.g,

<a href="/community">
  <translate desc="footer link to page referring to community github and slack">Community</translate>
</a>

Add the following require statement as well:

const translate = require("../../server/translate.js").translate;

Note that this path is valid for files inside pages/en and should be adjusted accordingly if files are in different locations, as discussed above.

Using Static Assets

Static assets should be placed into the website/static folder. They can be accesssed by their paths, excluding "static". For example, if the site's baseUrl is "/docusaurus/", an image in website/static/img/logo.png is available at /docusaurus/img/logo.png.

Styles

You should configure your site's primary, secondary, and Prism colors using the colors field in siteConfig as specified here. You can also configure other colors in the same way as described in the siteConfig doc.

You can provide your own custom styles by adding them anywhere in the website/static folder. Any .css files you provide in the static folder will get concatenated to the end of Docusaurus's provided styles, allowing you to add to or override Docusaurus default styles as you wish.

An easy way to figure out what classes you wish to override or add to is to start your server locally and use your browser's inspect element tool.

Adding Static Pages

Static .html files can also be used, but they will not include Docusaurus's header, footer, or styles by default. These can be added to the static folder in the same way as other static assets. Alternatively, they can be placed in the pages folder and would be served as-is instead of being rendered from React.

If you wish to use Docusaurus's stylesheet, you can access it at ${baseUrl}css/main.css. If you wish to use separate css for these static pages, you can exclude them from being concatenated to Docusaurus's styles by adding them into the siteConfig.separateCss field.