Making multiple changes to one JSON template

Question

I'm currently using jq with the 1pass CLI to try and create randomly generated passwords into a secure note. I'm having an issue with setting the fields.

These are two of my variables. I have 8 total I need to set.

section0_section_uuid="Section_0"

section1_section_uuid="Section_1"

And here are my commands to manipulate the template. I first read it in, change the first title, then save it to $template. I then pass $template into jq

template=$(cat template.json | jq --arg uuid "$section0_section_uuid" '.sections[0].title=$uuid')

template=$($template | jq --arg uuid "$section1_section_uuid" '.sections[1].title=$uuid')

echo $template

I get "file name too long." I don't think I'm passing the modified template variable in correctly. I need to do 7 more modifications to the template.json file.

Edit:

Here's the full template I'm trying to manipulate. It's 12 total changes to the template I have to make. 10 of the 12 are random numbers that I will generate. The remaining 2 of the 12 will be a generated usernames.

{
  "fields": [],
  "sections": [
    {
      "fields": [
        {
          "k": "concealed",
          "n": "[CHANGE_ME]",
          "t": "ROOT_USER_PASS",
          "v": "[CHANGE_ME]"
        },
        {
          "k": "concealed",
          "n": "[CHANGE_ME]",
          "t": "DEV_USER_PASS",
          "v": "[CHANGE_ME]"
        }
      ],
      "name": "Section_[CHANGE_ME]",
      "title": "Container SSH"
    },
    {
      "fields": [
        {
          "k": "string",
          "n": "[CHANGE_ME]",
          "t": "placeholdertext",
          "v": "[CHANGE_ME_LETTERS]"
        },
        {
          "k": "string",
          "n": "[CHANGE_ME]",
          "t": "placeholdertext",
          "v": "[CHANGE_ME_LETTERS]"
        },
        {
          "k": "concealed",
          "n": "[CHANGE_ME]",
          "t": "placeholdertext",
          "v": "[CHANGE_ME]"
        }
      ],
      "name": "Section_[CHANGE_ME]",
      "title": "MySQL"
    }
  ]
}

Answer 1

Why not make your template an actual jq filter, rather than a JSON blob to modify?

The contents of template.jq would be

{
  sections: [
    { title: $t1 },
    { title: $t2 },
    { title: $t3 },
    { title: $t4 },
    { title: $t5 },
    { title: $t6 },
    { title: $t7 },
    { title: $t8 }
  ]
}

Then your command would simply be

$ jq -n --arg t1 foo --arg t2 bar ... -f template.jq
{
  "sections": [
    {
      "title": "foo"
    },
    {
      "title": "bar"
    },
    ...
  ]
}

One benefit of doing it this way is that you can't accidentally forget a value; jq can only process the filter if you provide definitions for all 8 variables.