Question

I’m using Factual api to fetch location data. Their restful service return data in JSON format as follow, but they are not using “usual” JSON format. There’s no attribute key, instead, there’s a “fields” that explains all the field keys.

So the question is how to retrieve the attribute I need? Please give an example if possible. Thanks in advance.

{
    "response": {
        "total_rows": 2,
        "data": [
            [
                "ZPQAB5GAPEHQHDy5vrJKXZZYQ-A",
                "046b39ea-0951-4add-be40-5d32b7037214",
                "Hanko Sushi Iso Omena",
                60.16216,
                24.73907
            ],
            [
                "2TptHCm_406h45y0-8_pJJXaEYA",
                "27dcc2b5-81d1-4a72-b67e-2f28b07b9285",
                "Masabi Sushi Oy",
                60.21707,
                24.81192
            ]
        ],
        "fields": [
            "subject_key",
            "factual_id",
            "name",
            "latitude",
            "longitude"
        ],
        "rows": 2,
        "cache-state": "CACHED",
        "big-data": true,
        "subject_columns": [
            1
        ]
    },
    "version": "2",
    "status": "ok"
}

Answer 1

If you know the field name, and the data isn’t guaranteed to stay in the same order, I would do a transform on the data so I can reference the fields by name:

var fieldIndex = {}
for (key in x.response.fields)
{
    fieldIndex[x.response.fields[key]] = key;
}

for (key in x.response.data)
{
    alert(x.response.data[key][fieldIndex.name]);
}