CODEWITHSUNDEEP
jsonjq
Kelvin piroddi
Kelvin piroddi

Reputation: 47

jq output true if element exists

I am trying to use jq to output a single boolean it a element exists in array:

jq -e '.differences[] | .afterBlob.path | contains ("sandbox_app") or contains ("sandbox_cicd")'

Input:

{
    "differences": [
        {
            "beforeBlob": {
                "blobId": "a9033f024bf",
                "path": "test1",
                "mode": "100644"
            },
            "afterBlob": {
                "blobId": "e27f2609943e",
                "path": "test1",
                "mode": "100644"
            },
            "changeType": "M"
        },
        {
            "beforeBlob": {
                "blobId": "ec669676314",
                "path": "test2",
                "mode": "100644"
            },
            "afterBlob": {
                "blobId": "38867b90873",
                "path": "test2",
                "mode": "100644"
            },
            "changeType": "M"
        },
        {
            "afterBlob": {
                "blobId": "ae8c5bdb690",
                "path": "sandbox_app/test3",
                "mode": "100644"
            },
            "changeType": "A"
        },
        {
            "afterBlob": {
                "blobId": "97819f382ad9",
                "path": "sandbox_cicd/test3",
                "mode": "100644"
            },
            "changeType": "A"
        }
    ]
}

Current Output:

false
false
true
true

How can i get the output to just be a single boolean.

I have tried using the 'any' function:

 jq -e '.differences[] | .afterBlob.path | contains ("sandbox_app") or contains ("sandbox_cicd") | any'

but get the following: 

jq: error (at <stdin>:46): Cannot iterate over boolean (false)

I have also tried wrapping the 'any' function around my statement. Is there a way for jq to just output a single boolean if value exists

Upvotes: 2

Views: 1782

Answers (2)

peak
peak

Reputation: 117027

any/2 allows for a considerably more efficient solution here than any/0:

any(.differences[]; 
    .afterBlob.path | contains ("sandbox_app") or contains ("sandbox_cicd") )

Upvotes: 2

chepner
chepner

Reputation: 532418

You need to wrap the current expression in an array, which can then be fed to any:

jq -e '[.differences[].afterBlob.path |
         contains ("sandbox_app") or contains ("sandbox_cicd")] | 
       any' foo.json

You can also write this using map:

jq -e '.differences | 
       map(.afterBlob.path | contains ("sandbox_app") or contains ("sandbox_cicd")) |
       any' foo.json

which is slightly longer, but you might find it more intuitive.

Upvotes: 3

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