Preserve the order of frontmatter maps

support
1

Hello,

I have a list of older releases in my frontmatter as such

"olderReleases": {
    "2020": "2019-06-11",
    "2018": "2018-08-16",
    "2017": "2017-10-10",
    "2016-1": "2016-12-17",
    "2016": "2016-02-22",
    "2015": "2015-05-27",
    "2014": "2014-08-28",
    "2013-2": "2013-12-11",
    "2013-1": "2013-11-17",
    "2013": "2013-02-16",
    "2012": "2012-05-24",
    "2011-1": "2011-10-11",
    "2011": "2011-02-11",
    "2009-2": "2010-06-30",
    "2009-1": "2009-12-12",
    "2009": "2009-04-29",
    "2008": "2008-06-10",
    "2007": "2007-11-27",
    "2005": "2005-10-14",
    "2004": "2004-05-21",
    "2003": "2004-03-19"
}

I’d like to display it in the exact same order but hugo/go seems to parse and order the dictionary as:

{{ with .Params.olderReleases }}
      {{ . }}
{{ end }}

outputs

map[2003:2004-03-19 2004:2004-05-21 2005:2005-10-14 2007:2007-11-27 2008:2008-06-10 2009:2009-04-29 2009-1:2009-12-12 2009-2:2010-06-30 2011:2011-02-11 2011-1:2011-10-11 2012:2012-05-24 2013:2013-02-16 2013-1:2013-11-17 2013-2:2013-12-11 2014:2014-08-28 2015:2015-05-27 2016:2016-02-22 2016-1:2016-12-17 2017:2017-10-10 2018:2018-08-16 2020:2019-06-11]

I’ve tried sort and .Reverse but neither work. I’ve thought about manually rangeing over a seq (len .) 0 but I don’t think I can index the rows from the map.

I think a solution would be to store the map as two associated arrays, however I would prefer to keep the data structure as is for maintainability.

Many thanks, Carlin

2

Hi there,

What you have there is a map, which is by definition an unordered collection.

3

That’s sad to hear, coming from python which just got ordered dictionaries. Thanks though! I’ll use associative arrays instead

4

If you have control over input, you could do something like:

"olderReleases": [
    {"2020": "2019-06-11"},
     ...
]

which would preserve order.

1 Like
5

oh yep I can definitely do that instead, and keeps the semantics of the data. Thank you!

6 
{{ with .Params.olderReleases }}
  {{ range $map := . }}
    {{ range $key, $value := $map }}
      {{ $key }}: {{ $value }}
  {{ end }}
{{ end }}

for completion, this is how to access the new format

2 Likes
7

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