ToC for Bard & Markdown (Table of Contents)

Addon by Adrian Goldner

ToC for Bard & Markdown (Table of Contents) Main Screenshot

Latest Version Statamic v3 workflow

Statamic ToC

Automatic Table Of Contents for Statamic Bard or Markdown fields or other HTML content

This addon generates a Table-Of-Contents (ToC) for any Bard- or Markdown-Field in Statamic. Just like any Antlers-Tag you can use this addon in your templates with the usual Statamic-Magic Sugar:

<div class="max-w-md mx-auto">
  <div class="text-2xl font-bold">Table Of Contents</div>
  <div class="py-4 text-base text-gray-700 sm:text-lg">
    <ol class="list-decimal list-inside space-y-2">
      {{ toc depth="3" }}
      <li>
        <a class="font-bold text-cyan-800" href="#{{ toc_id }}"
          >{{ toc_title }}</a
        >
        {{ if children }}
        <ol>
          {{ *recursive children* }}
        </ol>
        {{ /if }}
      </li>
      {{ /toc }}
    </ol>
  </div>
</div>

Sweet, isn't it?

Installation

Install via composer:

composer require goldnead/statamic-toc

No further Vendor-Publishing or config files are needed.

Usage

This Addon provides the functionality to automatically generate an array of headings from your bard or markdown field you can iterate over in your antlers templates. Additionally, it ships with a modifier to automatically generate IDs for anchor-links.

Blueprint setup

Ideally, this addon works out-of-the-box with any bard setup. Behind the scenes it parses the given content for headlines and generates an associative nested (or unnested, see options below) array that you can iterate through. So, no special headline-sets are needed, just the plain ol' default Bard-field can be used:

title: test
sections:
  main:
    display: Main
    fields:
      ...
      -
        handle: bard
        field:
          always_show_set_button: false
          buttons:
            - h2
            - h3
            - bold
            - italic
            - unorderedlist
            - orderedlist
            - removeformat
            - quote
            - anchor
            - image
            - table
          toolbar_mode: fixed
          link_noopener: false
          link_noreferrer: false
          target_blank: false
          reading_time: false
          fullscreen: true
          allow_source: true
          enable_input_rules: true
          enable_paste_rules: true
          display: Bard
          type: bard
          icon: bard
          listable: hidden

Of course, you can use as many heading-buttons as you like. If you prefer to save your bard-content as HTML, you can safely turn on save_html: true in your bard-settings. You can also use this addon with your markdown-fields. Just pass it along to the tag like this:

{{ toc content="" }}
  ...
{{ /toc }}

or

{{ toc field="" }}
  ...
{{ /toc }}

The toc Modifier

Use the modifier in your templates to add IDs to your headings:

{{ text | toc }}

Then you get something like this:

<h2 id="this-is-an-example-heading">This is an example heading</h2>
<p>
  Voluptate do ad anim do mollit proident incididunt culpa ex quis aliquip et
  irure Lorem. Voluptate enim cillum do nostrud eiusmod deserunt.
</p>

!> Note: When headings are duplicated, the ID is suffixed with a number preventing duplicated IDs which would be semantially wrong in HTML.

The toc Tag

You can use the toc-Tag like you would use any recursive tag (like the nav Tag) in your Antler-Templates:

<ol>
  {{ toc }}
  <li>
    <a href="#{{ toc_id }}">{{ toc_title }}</a>

    {{ if children }}
    <ol>
      {{ *recursive children* }}
    </ol>
    {{ /if }}
  </li>
  {{ /toc }}
</ol>

By default, this addon assumes your bard-content lives inside a content-field named article. To change that behaviour you can assign the name of the bard field with the parameter field:

{{ toc field="bard" }}

or alternatively you can pass the bard-content directly to the content parameter:

{{ toc :content="bard" }} or {{ toc content="" }}

If you don't want to display your ToC as a nested list you can pass the parameter is_flat which flattens your list to one level:

<ol>
  {{ toc is_flat="true" }}
  <li>
    <a href="#{{ toc_id }}">{{ toc_title }}</a>
  </li>
  {{ /toc }}
</ol>

Variables

Every Item has the following variables at your disposal:

Variable Description
toc_title (string) The title of the heading (Note: title would be more obvious, but this lead to some weird cascade issues.)
toc_id (string) The slugified title to use as anchor-id
id (int) The internal id used to assign children and parents
is_root (bool) A flag to determine if the current heading is at root level
parent (int/null) Id of parent item if current item is a child
has_children (bool) Flag if current item has children
children (array) Contains all the Child-headings
total_children (int) Number of children (only if has_children is true)

Also, there are the following global variables present inside the toc tag:

Variable Description
total_results (int) The number of total headings including children.
no_results (bool) True if no results are present

Parameters

You can control the behaviour with the following tag-parameters:

Parameter Description (Type) Default
depth Specifies wich heading-depth the list includes (int) 3
is_flat When true the list will be displayed as a flat array without nested children (boolean) false
field The name of the bard-field. (string) "article"
content Content of the bard-structure or HTML String (string/array/null) null
from The starting point from where the list shohuld be outputted (string) h1

License

This is commercial software. To use it in production you need to purchase a license at the Statamic-Marketplace.