CODEWITHSUNDEEP
jsonansible
simon
simon

Reputation: 9

Ansible: Expecting property name enclosed in double quotes

The next task reads the contents of a file and for each line read (JSON format), calls a script. This part works fine

- name: create users
  script:
    cmd: myscript.sh "{{item}}"
  with_lines: "cat users-list"

I'm now trying to add a condition to the script call that depends on the content of the row being read (a field from the JSON being read), but I can't seem to find the correct syntax.

- name: create users
  script:
    cmd: myscript.sh "{{item}}"
  with_lines: "cat users-list"
  when: "{{(('{' + item + '}') | from_json).userLogin}}"

and I get this error:

Expecting property name enclosed in double quotes

I've tried various syntax, but no luck. I'm a bit out of ideas Any suggestions will be much appreciated.

Upvotes: 0

Views: 411

Answers (1)

larsks
larsks

Reputation: 311606

The immediate cause of the error is that you need to pass valid JSON to the from_json filter, and JSON only supports double quoted strings ("this is a valid JSON string", 'this is not').

Additionally, a when expression is evaluated in an implicit Jinja template context, which means you never use {{...}} template markers in the condition.

Unfortunately, without knowing the format of your users-list file, it's hard to suggest the correct syntax. If each line in that file is a valid JSON document, like this:

{"username": "bob", "userLogin": true}
{"username": "alice", "userLogin": false}

Then you could write your task like this:

- name: create users
  script:
    cmd: myscript.sh "{{item}}"
  with_lines: "cat users-list"
  when: "(item|from_json).userLogin"

Upvotes: 1

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