How To Render Grouped Articles

To render a group of articles we need a function to group them by a key. Hugo provides a few APIs to do so:

For the articles list in Today I Learned, I used .Pages.GroupByParam to group the articles by the param category I defined in every post and then sort them by date in an desending order so the recent articles of every category are rendered.

{{ range ((.Site.GetPage "section" "/today-i-learned").Pages.GroupByParam "category") }}
    <h2>{{ .Key }}</h2>
    {{ range .Pages.ByDate.Reverse }}
    <a href="{{ .URL }}" class="article-teaser">
        <h6>{{ .Title }}</h6>
    </a>
    {{ end }}
{{ end }}