jq command gives invalid payload with curl-CodePudding

I have a JSON list and I am trying to POST a particular key: value from the list to the slack webhook using curl. I am using jq to get the value for a specific key

This works fine:

echo {{job.message}} | jq -r '.[0] | .status'

This does not work:

curl -vvv -X POST -H "Content-type: application/json" --data \"{\"text\":\"{{job.message}} | jq -r ''.[0] | .status''\"}\" https://hooks.slack.com/services/xxxxx

job.message is a variable with json list

When I output the result using echo in shell, it works fine but when I use curl it show invalid payload or .key not found even though the key is present.

CodePudding user response：

In your text value, there is no mention of the command echo ..., you may use a subshell to evaluate the result. Also, you can use single quote for --data instead of double quote to avoid escaping:

curl -vvv -X POST \
    -H "Content-type: application/json" \
    --data '{"text":"'"$(echo $job_message | jq -r '.[0].status')"'"}' \
    "https://hooks.slack.com/services/xxxxx"

Also you can use jq -n to build the JSON object:

curl -vvv -H "Content-type: application/json" \
    -d "$(jq -n --arg text $job_message '{"text": ($text | fromjson)[0].status}')" \
    "https://hooks.slack.com/services/xxxxx"

You can also pipe jq command output to the body like this and use jq only to build the json object:

jq -n --arg text $job_message '{"text": ($text | fromjson)[0].status}' | \
   curl -vvv -H "Content-Type: application/json" -d @- "https://hooks.slack.com/services/xxxxx"