Error in generating a valid json recursive javascript function

Question

I have a function to generate an object which I'm transforming to a JSON later on:

function createSearchCriteria(payload) {
    var output = [];
    if (payload['searchCriteria'] != null) {
        for (var i = 0; i < payload['searchCriteria'].length; i++) {
            var content = payload['searchCriteria'][i];
            output[i] = {};
            if (content['grouping'] != null) {
                output[i]['groupOperator'] = content['grouping'];
                output[i]['searchCriteria'] = [];
                output[i]['searchCriteria'].push(createSearchCriteria(content))
            } else {
                output[i]['name'] = content['name'];
                output[i]['type'] = content['type'];
            }
        }
    }
    return output
}

The input payload for this method is also a JSON value parsed

payload = JSON.parse(request);

The input structure is almost the same as the output, the only difference is the "grouping" attribute, which in the output is called "groupOperator".

I have implemented my function recursive because we can have different levels of search criteria.

Even though the searchCriteria in the input has only one [] each.

Why does each searchCriteria in the result comes with 2 pairs of squared brackets?

{
    "searchCriteria": [
        {
            "groupOperator": "AND",
            "searchCriteria": [
                [
                    {
                        "groupOperator": "OR",
                        "searchCriteria": [
                            [
                                {
                                    "name": "FirstName",
                                    "type": "string"
                                },
                                {
                                    "name": "LastName",
                                    "type": "string"
                                },
                                {
                                    "name": "MiddleName",
                                    "type": "string"
                                },
                                {
                                    "name": "Document",
                                    "type": "string"
                                },
                                {
                                    "name": "DOB",
                                    "type": "date"
                                },
                                {
                                    "name": "CdrId",
                                    "type": "string"
                                }
                            ]
                        ]
                    },
                    {
                        "groupOperator": "AND",
                        "searchCriteria": [
                            [
                                {
                                    "name": "Active",
                                    "type": "bool"
                                },
                                {
                                    "name": "Id",
                                    "type": "int"
                                },
                                {
                                    "name": "CountryId",
                                    "type": "int"
                                }
                            ]
                        ]
                    }
                ]
            ]
        }
    ],
    "groupOperator": "AND"
}

Thanks in advance for your help.

JSON is completely irrelevant to this question, which is about restructuring an object. You should find better existing solutions if you aren't looking for specifically for a JSON solution. — user5734311
– user5734311, Commented Jan 24, 2021 at 13:14
yeah it's irrelevant but the result needed to be a valid json so that's why i mentioned. @LajosArpad, the response that i had contains two sets of squared brackets in the search criteria, I just needed one — Joselo
– Joselo, Commented Jan 25, 2021 at 10:05

Pointy · Accepted Answer · 2021-01-24 13:21:33Z

3

try

output[i]['searchCriteria'] = createSearchCriteria(content)

instead of

output[i]['searchCriteria'] = [];
output[i]['searchCriteria'].push(createSearchCriteria(content))

edited Jan 24, 2021 at 13:21

Pointy

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answered Jan 24, 2021 at 13:18

Mister Jojo

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1 Comment

Joselo Over a year ago

Thank you!! Javascript is not my strong suit so... i dind't see that, it works now!!

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