Casting a frontmatter date param in a where statement?

support
1

Trying to get date from map inside of an array in front matter for comparison but can’t seem to get it to work out.

E.g.

  {{range $p :=  (where (where .Params.featured_post.post_options "visible" "==" true) "date" ">=" time.Now )}}
      <div class="flex flex-col w-1/3 p-10" >
          {{time time.Now}}
      </div>
  {{end}}

Front matter:

featured_post:
  post_options:
    - _option: custom
      title: 'Introducing my stuff'
      date: 2021-11-20 10:00:00 -0700

Feels like a small missing piece of the puzzle. I’ve tried casting it using

(time "date")

to no avail. Thanks for any tips and pointers on where to read.

2

Times aren’t first class citizens in YAML, so the date is interpreted as a string, making it a hassle to work with in scenarios like this.

With front matter in TOML…

+++
title = "Test"
date = 2021-01-01T00:00:00.000Z
draft = false

[[featured_post.post_options]]
_option = "custom"
date = 2021-11-16T15:20:23-08:00
title = "A"
visible = false

[[featured_post.post_options]]
_option = "custom"
date = 2021-11-17T15:20:23-08:00
title = "B"
visible = true

[[featured_post.post_options]]
_option = "custom"
date = 2021-11-19T15:20:23-08:00
title = "C"
visible = true

[[featured_post.post_options]]
_option = "custom"
date = 2021-11-20T15:20:23-08:00
title = "D"
visible = true
+++

Putting this in layouts/_default/single.html…

{{ $post_options := where .Params.featured_post.post_options "visible" true }}
{{ $post_options = where $post_options "date" "ge" now }}
<pre>{{ jsonify (dict "indent" "  ") $post_options  }}</pre>

Produces…

[
  {
    "_option": "custom",
    "date": "2021-11-19T15:20:23-08:00",
    "title": "C",
    "visible": true
  },
  {
    "_option": "custom",
    "date": "2021-11-20T15:20:23-08:00",
    "title": "D",
    "visible": true
  }
1 Like
3

Unfortunately I don’t have the luxury of switching from YAML. :frowning:

4 
{{ $post_options := slice }}
{{ range where .Params.featured_post.post_options "visible" true }}
  {{ if ge (.date | time.AsTime) now }}
    {{ $post_options = $post_options | append . }}
  {{ end }}
{{ end }}
<pre>{{ jsonify (dict "indent" "  ") $post_options }}</pre>
5

This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.