Filtering Elements In Array

Based on the following JSON data:

d := json.D(`
    {
        "records": [
            {
                "key": "k1",
                "value": "v1"
            },
            {
                "key": "k2",
                "value": "v2"
            }
        ]
    }
`)
  

If you want to find a record with key equal to k2 and read the value of value, you can do this:

d.Filter("records", func(data *json.Data) bool {
    return data.GetString("key") == "k2"
}).GetString("records[0].value")
  

In the above example, after the records are filtered, there is only one record that matches the criteria, so you can locate the record by records[0] and get the value of the record by .value.