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Pagination Navigation

Contents

How to create a list of links to every paginated page on a pagination template.

Paginating over an Array

Consider the following example paginating our testdata array:

Syntax Liquid
---
pagination:
  data: testdata
  size: 2
testdata:
 - item1
 - item2
 - item3
 - item4
 - item5
 - item6
---
{% comment %}pagination.items has the data for the current page{% endcomment %}
Syntax Nunjucks
---
pagination:
  data: testdata
  size: 2
testdata:
 - item1
 - item2
 - item3
 - item4
 - item5
 - item6
---
{# pagination.items has the data for the current page #}

This example has not yet been added—you can swap to another template language above! Or maybe you want to contribute it? Edit this page

The above example would make three different output files from the template.

  • Page 1 would have pagination.items set to ['item1', 'item2'].
  • Page 2 would have pagination.items set to ['item3', 'item4'].
  • Page 3 would have pagination.items set to ['item5', 'item6'].

But to create a series of links to each of these paginated output templates, we’ll want to use our pagination.pages entries , an array of the pagination.items for each page.

A good way to think about it:

  • pagination.items is the chunk of data for the current page.
  • pagination.pages is the chunked page data for all of the pages.
INFO:
While the above example pages over an array of data, the code provided here will operate the same for any paginated data (including objects)!

Starter Example

To create an accessible navigation structure, we want to do our research first!

Alright, you definitely read all of those right? 😇 Here’s some accessible code you definitely would have written yourself after reading those wonderful resources:

Filename starter.liquid
<nav aria-labelledby="my-pagination">
  <h2 id="my-pagination">This is my Pagination</h2>
  <ol>
{%- for pageEntry in pagination.pages %}
    <li><a href="{{ pagination.hrefs[ forloop.index0 ] }}"{% if page.url == pagination.hrefs[ forloop.index0 ] %} aria-current="page"{% endif %}>Page {{ forloop.index }}</a></li>
{%- endfor %}
  </ol>
</nav>
Filename starter.njk
<nav aria-labelledby="my-pagination">
  <h2 id="my-pagination">This is my Pagination</h2>
  <ol>
{%- for pageEntry in pagination.pages %}
    <li><a href="{{ pagination.hrefs[ loop.index0 ] }}"{% if page.url == pagination.hrefs[ loop.index0 ] %} aria-current="page"{% endif %}>Page {{ loop.index }}</a></li>
{%- endfor %}
  </ol>
</nav>
Filename starter.11ty.js
exports.render = function(data) {
  return `<nav aria-labelledby="my-pagination">
    <h2 id="my-pagination">This is my Pagination</h2>
    <ol>
    ${data.pagination.pages.map(function (item, index) {
      return `<li><a href="${data.pagination.hrefs[index]}" ${data.pagination.hrefs[index] ? 'aria-current="page"' : "" }>Page ${index + 1}</a></li>`;
    }).join("");}
    </ol>
  </nav>`;
};

For our example, this code will output the following markup for our example (on the first page):

Syntax HTML
<nav aria-labelledby="my-pagination">
	<h2 id="my-pagination">This is my Pagination</h2>
	<ol>
		<li><a href="/test/" aria-current="page">Page 1</a></li>
		<li><a href="/test/1/">Page 2</a></li>
		<li><a href="/test/2/">Page 3</a></li>
	</ol>
</nav>
INFO:
HTML tip: make sure the id attribute used on your heading (id="my-pagination") is unique to your page!

Accessing the Original Paginated Content

Say you want to output something from the paginated data instead of bland Page 1, Page 2, etc. links. For that we need to access the original data!

When Paginating Arrays

Syntax YAML
testdata:
  - item1
  - item2
  - item3
  - item4
  - item5
  - item6
Liquid Nunjucks 11ty.js
  • When size is set to 2, pagination.pages will look like: [['item1', 'item2'], ['item3', 'item4'], ['item5', 'item6']]
    • Use pageEntry[0] and pageEntry[1] to access the original content.
  • When size is set to 1, pagination.pages will be the same as the original data: ['item1', 'item2', 'item3', 'item4', 'item5', 'item6']
    • Use pageEntry to access the original content.

When Paginating Object Literals

Syntax YAML
testdata:
  key1: item1
  key2: item2
  key3: item3
  key4: item4
  key5: item5
  key6: item6
Liquid Nunjucks 11ty.js
  • When size is set to 2, pagination.pages will look like: [['key1', 'key2'], ['key3', 'key4'], ['key5', 'key6']]
    • Use testdata[ pageKey[0] ] and testdata[ pageKey[1] ] to access the original content.
  • When size is set to 1, pagination.pages will be the keys of the object: ['key1', 'key2', 'key3', 'key4', 'key5', 'key6']
    • Use testdata[ pageKey ] to access the original content.

Visually Style the Current Page Link

You’ll probably also want to add some kind of visual styling to indicate that the user is on the current page. For this let’s use a light background-color.

Syntax CSS
[aria-current] {
	background-color: #eee;
}
INFO:
A Tip to avoid something that annoys Zach™: If you use something like font-weight here make sure the change in text size for the current page doesn’t make your navigation shift around between pages! This is especially important if your navigation links are displayed side-by-side on the same line.

Note that if the current page (page.url) is the first or last in the set, we won’t output links.

This example has not yet been added—you can swap to another template language above! Or maybe you want to contribute it? Edit this page

Filename nextprev.njk
<nav aria-labelledby="my-pagination">
  <h2 id="my-pagination">This is my Pagination</h2>
  <ol>
    <li>{% if pagination.href.previous %}<a href="{{ pagination.href.previous }}">Previous</a>{% else %}Previous{% endif %}</li>
{%- for pageEntry in pagination.pages %}
    <li><a href="{{ pagination.hrefs[ loop.index0 ] }}"{% if page.url == pagination.hrefs[ loop.index0 ] %} aria-current="page"{% endif %}>Page {{ loop.index }}</a></li>
{%- endfor %}
    <li>{% if pagination.href.next %}<a href="{{ pagination.href.next }}">Next</a>{% else %}Next{% endif %}</li>
  </ol>
</nav>
Filename nextprev.11ty.js
exports.render = function(data) {
  return `<nav aria-labelledby="my-pagination">
    <h2 id="my-pagination">This is my Pagination</h2>
    <ol>
      <li>${data.pagination.href.previous ? `<a href="${data.pagination.href.previous}">Previous</a>` : `Previous`}</li>
      ${data.pagination.pages.map(function (item, index) {
        return `<li><a href="${data.pagination.hrefs[index]}" ${data.pagination.hrefs[index] ? 'aria-current="page"' : "" }>Page ${index + 1}</a></li>`;
      }).join("");}
      <li>${data.pagination.href.next ? `<a href="${data.pagination.href.next}">Next</a>` : `Next`}</li>
    </ol>
  </nav>`;
};
  • pagination.href.previous and pagination.href.next are added in 0.10.0. Use pagination.previousPageHref or pagination.nextPageHref in previous versions.

For clarity here, we’re omitting the previous and next links from the previous section. Note the code below to show the links only if pagination.href.first and pagination.href.last don’t match the current page.url.

This example has not yet been added—you can swap to another template language above! Or maybe you want to contribute it? Edit this page

Filename firstlast.njk
<nav aria-labelledby="my-pagination">
  <h2 id="my-pagination">This is my Pagination</h2>
  <ol>
    <li>{% if page.url != pagination.href.first %}<a href="{{ pagination.href.first }}">First</a>{% else %}First{% endif %}</li>
{%- for pageEntry in pagination.pages %}
    <li><a href="{{ pagination.hrefs[ loop.index0 ] }}"{% if page.url == pagination.hrefs[ loop.index0 ] %} aria-current="page"{% endif %}>Page {{ loop.index }}</a></li>
{%- endfor %}
    <li>{% if page.url != pagination.href.last %}<a href="{{ pagination.href.last }}">Last</a>{% else %}Last{% endif %}</li>
  </ol>
</nav>
Filename firstlast.11ty.js
exports.render = function(data) {
  return `<nav aria-labelledby="my-pagination">
    <h2 id="my-pagination">This is my Pagination</h2>
    <ol>
      <li>${data.page.url === data.pagination.href.first ? `<a href="${data.pagination.href.first}">First</a>` : `First`}</li>
      ${data.pagination.pages.map(function (item, index) {
        return `<li><a href="${data.pagination.hrefs[index]}" ${data.pagination.hrefs[index] ? 'aria-current="page"' : "" }>Page ${index + 1}</a></li>`;
      }).join("");}
      <li>${data.page.url === data.pagination.href.last ? `<a href="${data.pagination.href.last}">Last</a>` : `Last`}</li>
    </ol>
  </nav>`;
};

Put It All Together

Here’s the final pagination navigation template code, pieced together:

This example has not yet been added—you can swap to another template language above! Or maybe you want to contribute it? Edit this page

Filename combined.njk
<nav aria-labelledby="my-pagination">
  <h2 id="my-pagination">This is my Pagination</h2>
  <ol>
    <li>{% if page.url != pagination.href.first %}<a href="{{ pagination.href.first }}">First</a>{% else %}First{% endif %}</li>
    <li>{% if pagination.href.previous %}<a href="{{ pagination.href.previous }}">Previous</a>{% else %}Previous{% endif %}</li>
{%- for pageEntry in pagination.pages %}
    <li><a href="{{ pagination.hrefs[ loop.index0 ] }}"{% if page.url == pagination.hrefs[ loop.index0 ] %} aria-current="page"{% endif %}>Page {{ loop.index }}</a></li>
{%- endfor %}
    <li>{% if pagination.href.next %}<a href="{{ pagination.href.next }}">Next</a>{% else %}Next{% endif %}</li>
    <li>{% if page.url != pagination.href.last %}<a href="{{ pagination.href.last }}">Last</a>{% else %}Last{% endif %}</li>
  </ol>
</nav>
Filename combined.11ty.js
exports.render = function(data) {
  return `<nav aria-labelledby="my-pagination">
    <h2 id="my-pagination">This is my Pagination</h2>
    <ol>
      <li>${data.page.url === data.pagination.href.first ? `<a href="${data.pagination.href.first}">First</a>` : `First`}</li>
      <li>${data.pagination.href.previous ? `<a href="${data.pagination.href.previous}">Previous</a>` : `Previous`}</li>
      ${data.pagination.pages.map(function (item, index) {
        return `<li><a href="${data.pagination.hrefs[index]}" ${data.pagination.hrefs[index] ? 'aria-current="page"' : "" }>Page ${index + 1}</a></li>`;
      }).join("")}
      <li>${data.pagination.href.next ? `<a href="${data.pagination.href.next}">Next</a>` : `Next`}</li>
      <li>${data.page.url === data.pagination.href.last ? `<a href="${data.pagination.href.last}">Last</a>` : `Last`}</li>
    </ol>
  </nav>`;
};

Alright, you’ve copied the above—but don’t leave yet—your work is not done (sorry)! You still need to:

  • Change my-pagination to a better id attribute for your use case and update it in aria-labelledby too.
  • Update the This is my Pagination text to make more sense for your use case.
  • Think about maybe changing the <h2> to better suit your document structure.
  • Add some CSS to highlight the current page in the navigation, visually.
INFO:
HTML tip: You might be tempted to use role="navigation" here, but it’s superfluous when using <nav>.
INFO:
Accessibility tip: if you style this list with list-style-type: none, read this article about VoiceOver

All of the above will output the following HTML for our example (on the first page of the set):

Syntax HTML
<nav aria-labelledby="my-pagination">
	<h2 id="my-pagination">This is my Pagination</h2>
	<ol>
		<li>First</li>
		<li>Previous</li>
		<li><a href="/test-array/" aria-current="page">Page 1</a></li>
		<li><a href="/test-array/1/">Page 2</a></li>
		<li><a href="/test-array/2/">Page 3</a></li>
		<li><a href="/test-array/1/">Next</a></li>
		<li><a href="/test-array/2/">Last</a></li>
	</ol>
</nav>