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title | permalink | excerpt | gallery | feature_row | last_modified_at | toc | toc_label | toc_icon | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Helpers | /docs/helpers/ | Jekyll `_includes` and other helpers to use as shortcuts for creating archives, galleries, table of contents, and more. |
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2018-01-09T14:26:13-05:00 | true | Helpers | cogs |
You can think of these Jekyll helpers as little shortcuts. Since GitHub Pages doesn't allow most plugins --- custom tags are out. Instead the theme leverages includes to do something similar.
Base Path
Deprecated. Use absolute_url
filter instead.
Instead of repeating {% raw %}{{ site.url }}{{ site.baseurl }}{% endraw %}
over and over again to create absolute URLs, you can use {% raw %}{{ base_path }}{% endraw %}
instead. Simply add {% raw %}{% include base_path %}{% endraw %}
to layouts, posts, pages, collections, or other includes and you're good to go.
ProTip: It's a good practice to use absolute URL paths for assets (especially post images) so they correctly resolve in the site's XML feeds. Example: {% raw %}{{ "/assets/images/filename.jpg" | absolute_url }}{% endraw %}
~> https://yourdoamin.com/assets/images/filename.jpg
{: .notice--info}
Group by Array
Jekyll Group-By-Array by Max White.
A liquid include file for Jekyll that allows an object to be grouped by an array.
The Liquid based taxonomy archives found amongst the demo pages rely on this helper.
Description | ||
---|---|---|
All posts grouped by category | [Source][category-array] | [Demo][category-array-demo] |
All posts grouped by tag | [Source][tag-array] | [Demo][tag-array-demo] |
[category-array]: https://github.com/{{ site.repository }}/blob/master/docs/_pages/category-archive.html [category-array-demo]: {{ "/categories/" | absolute_url }} [tag-array]: https://github.com/{{ site.repository }}/blob/master/docs/_pages/tag-archive.html [tag-array-demo]: {{ "/tags/" | absolute_url }}
Figure
Generate a <figure>
element with a single image and caption.
Include Parameter | Required | Description |
---|---|---|
image_path | Required | Full path to image eg: /assets/images/filename.jpg . Use absolute URLS for those hosted externally. |
alt | Optional | Alternate text for image. |
caption | Optional | Figure caption text. Markdown is allowed. |
Using the figure
include like so:
{% raw %}{% include figure image_path="/assets/images/unsplash-image-10.jpg" alt="this is a placeholder image" caption="This is a figure caption." %}{% endraw %}
Will output the following:
{% include figure image_path="/assets/images/unsplash-image-10.jpg" alt="this is a placeholder image" caption="This is a figure caption." %}
<figure>
<img src="/assets/images/unsplash-image-10.jpg" alt="this is a placeholder image">
<figcaption>This is a figure caption.</figcaption>
</figure>
Gallery
Generate a <figure>
element with optional caption of arrays with two or more images.
To place a gallery add the necessary YAML Front Matter.
Name | Required | Description |
---|---|---|
url | Optional | URL to link gallery image to (eg. a larger detail image). |
image_path | Required | Full path to image eg: /assets/images/filename.jpg . Use absolute URLS for those hosted externally. |
alt | Optional | Alternate text for image. |
title | Optional | Title text for image. Will display as a caption in a Magnific Popup overlay when linked to a larger image with url . |
gallery:
- url: /assets/images/unsplash-gallery-image-1.jpg
image_path: /assets/images/unsplash-gallery-image-1-th.jpg
alt: "placeholder image 1"
title: "Image 1 title caption"
- url: /assets/images/unsplash-gallery-image-2.jpg
image_path: /assets/images/unsplash-gallery-image-2-th.jpg
alt: "placeholder image 2"
title: "Image 2 title caption"
- url: /assets/images/unsplash-gallery-image-3.jpg
image_path: /assets/images/unsplash-gallery-image-3-th.jpg
alt: "placeholder image 3"
title: "Image 3 title caption"
And then drop-in the gallery include in the body where you'd like it to appear.
Include Parameter | Required | Description | Default |
---|---|---|---|
id | Optional | To add multiple galleries to a document uniquely name them in the YAML Front Matter and reference in {% raw %}{% include gallery id="gallery_id" %}{% endraw %} |
gallery |
class | Optional | Use to add a class attribute to the surrounding <figure> element for additional styling needs. |
|
caption | Optional | Gallery caption description. Markdown is allowed. |
{% raw %}{% include gallery caption="This is a sample gallery with **Markdown support**." %}{% endraw %}
Gallery example with caption:
{% include gallery caption="This is a sample gallery with Markdown support." %}
More Gallery Goodness: A few more examples and [source code](https://github.com/{{ site.repository }}/blob/master/docs/_posts/2010-09-09-post-gallery.md) can be seen in [this sample gallery post]({{ "" | absolute_url }}{% post_url 2010-09-09-post-gallery %}). {: .notice--info}
Feature Row
Designed to compliment the [splash
]({{ "/docs/layouts/#splash-page-layout" | absolute_url }}) page layout as a way of arranging and aligning "feature blocks" containing text or image.
To add a feature row containing three content blocks with text and image, add the following YAML Front Matter
Name | Required | Description | Default |
---|---|---|---|
image_path | Required | Full path to image eg: /assets/images/filename.jpg . Use absolute URLS for those hosted externally. |
|
alt | Optional | Alternate text for image. | |
title | Optional | Content block title. | |
excerpt | Optional | Content block excerpt text. Markdown is allowed. | |
url | Optional | URL that the button should link to. | |
btn_label | Optional | Button text label. | more_label in UI Text data file. |
btn_class | Optional | Button style. See [utility classes]({{ "/docs/utility-classes/#buttons" | absolute_url }}) for options. |
feature_row:
- image_path: /assets/images/unsplash-gallery-image-1-th.jpg
alt: "placeholder image 1"
title: "Placeholder 1"
excerpt: "This is some sample content that goes here with **Markdown** formatting."
- image_path: /assets/images/unsplash-gallery-image-2-th.jpg
alt: "placeholder image 2"
title: "Placeholder 2"
excerpt: "This is some sample content that goes here with **Markdown** formatting."
url: "#test-link"
btn_label: "Read More"
btn_class: "btn--inverse"
- image_path: /assets/images/unsplash-gallery-image-3-th.jpg
title: "Placeholder 3"
excerpt: "This is some sample content that goes here with **Markdown** formatting."
And then drop-in the feature row include in the body where you'd like it to appear.
Include Parameter | Required | Description | Default |
---|---|---|---|
id | Optional | To add multiple rows to a document uniquely name them in the YAML Front Matter and reference in {% raw %}{% include feature_row id="row2" %}{% endraw %} |
feature_row |
type | Optional | Alignment of the featured blocks in the row. Options include: left , center , or right aligned. |
{% raw %}{% include feature_row %}{% endraw %}
{% include feature_row %}
More Feature Row Goodness: A [few more examples]({{ "/splash-page/" | absolute_url }}) and [source code](https://github.com/{{ site.repository }}/blob/master/docs/_pages/splash-page.md) can be seen in the demo site. {: .notice--info}
Responsive Video Embed
Embed a video from YouTube or Vimeo that responsively sizes to fit the width of its parent.
Parameter | Required | Description |
---|---|---|
id |
Required | ID of the video |
provider |
Required | Hosting provider of the video, either youtube or vimeo |
YouTube
To embed the following YouTube video at url https://www.youtube.com/watch?v=XsxDH4HcOWA
(long version) or https://youtu.be/XsxDH4HcOWA
(short version) into a post or page's main content you'd use:
{% raw %}{% include video id="XsxDH4HcOWA" provider="youtube" %}{% endraw %}
{% include video id="XsxDH4HcOWA" provider="youtube" %}
To embed it as a video header you'd use the following YAML Front Matter
header:
video:
id: XsxDH4HcOWA
provider: youtube
Vimeo
To embed the following Vimeo video at url https://vimeo.com/212731897
into a post or page's main content you'd use:
{% raw %}{% include video id="212731897" provider="vimeo" %}{% endraw %}
{% include video id="212731897" provider="vimeo" %}
To embed it as a video header you'd use the following YAML Front Matter
header:
video:
id: 212731897
provider: vimeo
Table of Contents
Auto-generated table of contents list for your posts and pages can be enabled using two methods.
![table of contents example]({{ "/assets/images/mm-toc-helper-example.jpg" | absolute_url }})
Enabled via YAML Front Matter
Add toc: true
to the YAML Front Matter of any post or page.
Parameter | Required | Description | Default |
---|---|---|---|
toc | Optional | Show table of contents. (boolean) | false |
toc_label | Optional | Table of contents title. (string) | toc_label in UI Text data file. |
toc_icon | Optional | Table of contents icon, displays before the title. (string) | Font Awesome file-alt icon. Other FA icons can be used instead. |
TOC example with custom title and icon
---
toc: true
toc_label: "My Table of Contents"
toc_icon: "cog"
---
Note: using both methods will have unintended results. Be sure to remove {% raw %}{% include toc %}{% endraw %}
placed table of contents from your content when using toc: true
.
{: .notice--warning }
Enabled via toc
include (deprecated)
To include a Kramdown auto-generated table of contents for posts and pages, add the following helper to your content.
{% raw %}{% include toc %}{% endraw %}
Note: this method only works with Markdown files. {: .notice--warning}
Deprecated: toc
helper will be removed in the next major version of the theme. It is encouraged that you migrate to the YAML Front Matter method above.
{: .notice--danger}
Parameter | Required | Description | Default |
---|---|---|---|
title | Optional | Table of contents title. (string) | toc_label in UI Text data file. |
icon | Optional | Table of contents icon, displays before the title. (string) | Font Awesome file-alt icon. Other FA icons can be used instead. |
TOC example with custom title and icon
{% raw %}{% include toc icon="cog" title="My Table of Contents" %}{% endraw %}
Navigation List
Include an unordered list of links to be used as sidebar navigation with the nav_list
helper.
1. Start by adding a set of titles and URLs to _data/navigation.yml
in the same way the [main
navigation]({{ "/docs/navigation/" | absolute_url }}) is built.
foo
navigation example:
# _data/navigation.yml
foo:
- title: "Link 1 Title"
url: /link-1-page-url/
- title: "Link 2 Title"
url: http://external-link.com
- title: "Link 3 Title"
url: /link-3-page-url/
- title: "Link 4 Title"
url: /link-4-page-url/
For a navigation list that has child pages you'd structure the YAML like this:
# _data/navigation.yml
foo:
- title: "Parent Link 1"
url: /parent-1-page-url/
children:
- title: "Child Link 1"
url: /child-1-page-url/
- title: "Child Link 2"
url: /child-2-page-url/
- title: "Parent Link 2"
url: /parent-2-page-url/
children:
- title: "Child Link 1"
url: /child-1-page-url/
- title: "Child Link 2"
url: /child-2-page-url/
- title: "Child Link 3"
url: /child-3-page-url/
2: On the page(s) you'd like the foo
sidebar nav add the following YAML Front Matter, referencing the same key name.
sidebar:
nav: "foo"
ProTip: If you're applying the same navigation list to several pages setting it as a Front Matter default is the better option. {: .notice--info}
The theme's documentation is built with the nav_list
helper so if you'd like an example to dissect take a look at navigation.yml
, _config.yml
and _doc
collection in the [/docs/
folder](https://github.com/{{ site.repository }}/tree/master/docs/) of this repo.
To add a navigation list to a post or page's main content instead of the sidebar use the include this way:
{% raw %}{% include nav_list nav="foo" %}{% endraw %}
{% include nav_list nav="foo" %}
Parameter | Required | Description |
---|---|---|
items | Required | Name of the links array found in _data/navigation.yml . |