How do I sort a map by default order?

support
1

Given the following front matter:

[[book]]
  title = "Dog"
  price = 12
[[book]]
  title = "Ape"
  price = 20
[[book]]
  title = "Cat"
  price = 32

And code:

{{range .Params.book}}
  <tr>
    {{range .}}
    <td>
      {{.}}
    </td>
    {{end}}
  </tr>
{{end}}

Gives this output:

12: Dog 
20: Ape
32: Cat

But I’d like the default order. Desired output:

Dog: 12 
Ape: 20
Cat: 32

How do I do this please?

2

What do you mean by “default” order?

{{ range .Params.book }}
  {{ range $key, $value := . }}
    {{ $key }} : {{ $value }}
  {{ end }}
{{ end }}
3

By default order, I mean the order as specified in front matter. In this case: title followed by price.

Using your code, you get the following:

price : 12 title : Dog
price : 20 title : Ape
price : 32 title : Cat

Which is not what I’m after, as the order is incorrect: price, then title.

My use case is that I’m creating a table, and the headings are title, then price. By using your code, or my original one, you get the wrong order.

Not sure if it’s linked to this.

4 
{{ range .Params.book }}
  {{ .title }}: {{ .price }}<br>
{{ end }}
5

Thank you.

This won’t work as I’m creating a table. Each book needs to have it’s own row, <tr>, with each value having it’s own data cell, <td>.

6

I don’t see why the short example can’t be amended to look like

{{ range .Params.book }}
 <tr><td>{{ .title }}:</td><td>{{ .price }}</td></tr>
{{ end }}

Or do you mean something else entirely?

7

That works. It’s just that I plan on having more values and so I’ll be duplicating code for each parameter. Every time I add a value, I need to add another <td>. I was trying to keep avoid having to repeat myself. Does that make sense?

8

I’ve been there before. Go orders keys by alphanum and there’s no way around it.

If you you know your keys you can do the following:

{{ range $book := .books }}
  <tr>
  {{ range slice "title" "price" "other" }}
    {{ with index $book . }}
      <td>{{ . }}</td>
    {{ end }}
  {{ end }}
  </tr>
{{ end }}
9

Sir, this belongs to you → :crown:

10

glad I could help