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Single-sourcing content

About versioning

Versions are managed in the versions array located in the website/dbt-versions.js file. This array holds all versions which are selectable from the versions dropdown in the navigation.

The first version in the array is the latest version. This is the default version when a visitor loads the page.

Adding a new version

To add a new version to the site, a new object must be added to the versions array in the same format as existing versions. This object holds two properties: version and EOLDate (See End of Life Dates below).

Example Version:

exports.versions = [
	{
		version: "1.2",
		EOLDate: "2023-01-01"
	}
]

The version property is the value which shows in the nav dropdown. This value is compared to the VersionBlock component on a docs page to determine whether that section should be visible for the current active version (See the Versioning the Sidebar section on using the VersionBlock component).

Using end-of-life dates

The EOLDate property determines when a version is no longer supported. A version is supported up until 1 year after its release.

When a documentation page is viewed, the EOLDate property for the active version is compared to today’s date. If the current version has reached, or is nearing the end of support, a banner will show atop the page, notifying the visitor of the end-of-life status.

Two different versions of the banner will show depending on the end-of-life date:

  • When the version is within 3 months of the EOLDate.
  • When the version has passed the EOLDate.

Updating EOL date banner language

The content for these two EOLDate banners are located in the website/src/theme/DocPage/index.js file, in the EOLBannerText property.

Versioning entire pages

If a Docs page should not be available for the selected version, it is possible to version the entire page. This is managed in the versionedPages array within the website/dbt-versions.js file.

Two things occur when a page is not available for the selected version:

  • A banner will appear atop the page, noting this page covers a new feature which isn’t available for the selected version.
  • The page is removed from the sidebar

Example of how to version a page in the dbt-versions.js file:

exports.versionedPages = [
    {
      "page": "docs/supported-data-platforms",
      "firstVersion": "0.21",
    }
]

Properties for versioning an entire page

page (mandatory): The path of the Docs page to version. This string must match the string for the page in the sidebars.js file.

firstVersion (optional): Sets the first version which this page is available.

lastVersion (optional): Sets the last version which this page is available.

Versioning blocks of content

The VersionBlock component provides the ability to version a specific piece of content on a docs page.

This component can be added directly to a markdown file in a similar way as other components (FAQ, File, Lightbox).

Versioning properties

  • firstVersion (optional): Sets the first version this piece of content is available for.
    • Defaults to 0 if not set.
  • lastVersion (optional): Sets the last version this piece of content is available for.
    • If lastVersion prop not set, it will be available from the firstVersion, up to the latest version.

Both properties can be used together to set a range where the content should show. In the example below, this content will only show if the selected version is between 0.21 and 1.0:

<VersionBlock lastVersion="1.0">

	Versioned content here

</VersionBlock>

Example for versioning entire pages

On the Docs Defer page, tabs are used to show different versions of a piece of code. v0.21.0 and later shows --select, while v-.20.x and earlier changes this to --models.

oldway

Below is how we can implement the same versioning using the new VersionBlock component:

You see this block when the selected version is >= 0.21:

<VersionBlock firstVersion="0.21">

```shell
$ dbt run --select [...] --defer --state path/to/artifacts
$ dbt test --select [...] --defer --state path/to/artifacts
\```
You see this version block when the selected version is <= 0.20 
<VersionBlock lastVersion="0.20">

```shell
$ dbt run --models [...] --defer --state path/to/artifacts
$ dbt test --models [...] --defer --state path/to/artifacts
\```

</VersionBlock>

Using global variables

Global variables can be configured for use throughout the docs.

Using a global variable requires two steps:

  1. Set the variable in the website/dbt-global-variables.js file.
  2. Use the Var component to add the global variable to a page.
// The dbtCore property is the identifer for the variable,
// while the name property is the value shown on the page.

exports.dbtVariables = {
  dbtCore: {
    name: "dbt Core"
  } 
}
// <Var name="dbtCore" /> is converted to dbt Core

You can install <Var name="dbtCore" /> on the command line by using one of these recommended methods:

Versioning global variables

It is possible to version global variables as well. This creates the ability to show different variations of a string based off the current version a visitor has selected.

To extend our dbt-global-variables.js file above, we can add a new variable: note - these versions are not accurate and only shown for this example.

// A new variable called dbtCloud is added below
// This variable includes a versions array
// "Sinter" will replace "dbt Cloud" for versions 0.21 or lower

exports.dbtVariables = {
  dbtCore: {
    name: "dbt Core"
  },
	dbtCloud: {
		name: "dbt Cloud",
		versions: [
      {
        "name": "Sinter",
        "version": "0.21"
      }
    ]
	}
}
You can get started with <Var name="dbtCloud" /> by [Signing up](https://www.getdbt.com/signup/).

In the above example, the dbtCloud property has a default name of “dbt Cloud”. The naming for variables cascade down, meaning “dbt Cloud” will show for all versions, until version 0.21 or lower is selected. At that point “Sinter” will replace “dbt Cloud”.

Global variables properties

name (required): Expects the identifier for a global variable.

Global variables example

The global <Var /> component can be used inline, for example:

This piece of markdown content explains why <Var name="dbt" /> is awesome.

However, a Var component cannot start a new line of content. Fortunately, a workaround exists to use the Var component at the beginning of a line of content.

To use the component at the beginning of a sentence, add a non-breaking space character before the component:

// When starting a new line with a global variable,
// a non-breaking space is required

// Works
&nbsp;<Var name="dbt" /> is awesome!

// Does not work
<Var name="dbt" /> is awesome!

Reusing snippets of content

The Snippet component allows for content to be reusable throughout the Docs. This is very similar to the existing FAQ component.

Creating and using a snippet requires two steps:

  1. Create a new markdown snippet file in the website/snippets directory.
  2. Use the <Snippet src="filename" /> component within a Docs file.

Snippet properties

src: Expects the file name of the snippet which lives in the snippets directory

Snippet example

To create a new snippet to use throughout the site, first we will create a new markdown snippet within the snippets directory:

## Header 2

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam fermentum porttitor dui, id scelerisque enim scelerisque at.

Now, we can add this snippet to a Docs file with the Snippet component:

Docs content here.

<Snippet src="lorem-ipsum" />

Docs content here.