Reading a non static key from a JSON file in Javascript-CodePudding

I'm trying to read the current profile of a user from an API, but the problem is that I would not known the profile id, since it is randomly generated. Is there a way to maybe skip this key and check which object has current set to true, or maybe another way?

Any help is appreciated.

{
    "profiles": {
        "70560fe0cdce4e9b91a0a161a257e188": {
            "profile_id": "70560fe0cdce4e9b91a0a161a257e188",
            "cute_name": "Pomegranate",
            "current": true,
            "last_save": 1632932207555,
            "raw": {},
            "items": {},
            "data": {}
        },
        "b49bab4a08a64be38edec3f9ecf8f639": {
            "profile_id": "b49bab4a08a64be38edec3f9ecf8f639",
            "cute_name": "Raspberry",
            "current": false,
            "last_save": 1630180158660,
            "raw": {},
            "items": {},
            "data": {}
        }
    }
}

CodePudding user response：

If you're using modern JS you can filter the objects to find what you need.

const obj = {
  "profiles": {
    "70560fe0cdce4e9b91a0a161a257e188": {
      "profile_id": "70560fe0cdce4e9b91a0a161a257e188",
      "cute_name": "Pomegranate",
      "current": true,
      "last_save": 1632932207555,
      "raw": {},
      "items": {},
      "data": {}
    },
    "b49bab4a08a64be38edec3f9ecf8f639": {
      "profile_id": "b49bab4a08a64be38edec3f9ecf8f639",
      "cute_name": "Raspberry",
      "current": false,
      "last_save": 1630180158660,
      "raw": {},
      "items": {},
      "data": {}
    }
  }
}

const profiles = Object.values(obj.profiles) // convert to useable array

console.log(profiles.filter(p => p.current === true))

CodePudding user response：

const data = {
    "profiles": {
        ...
    }
}

for (const [key, value] of Object.entries(data.profiles)) {
  if (value.current) {
      console.log(`${key} is true`);
  }
}

Output: 70560fe0cdce4e9b91a0a161a257e188 is true

That could be an easy approach to work with the data

CodePudding user response：

You can loop through an object's enumerable properties, such as these, without needing to know their keys by using a for...in loop.

Otherwise, depending on what browsers you have to support, you could use Object.values to convert an object into an array of its enumerable values, and you could then run Array.prototype.filter.

Here's a brief example using a for...in loop, assuming your API response is saved in a data variable:

let activeProfiles = [];

for (let profileId in data.profiles) {
    let profile = data.profiles[profileId];
    if (profile.current === true) {
        activeProfiles.push(profile);
    }
}

And if you wanted to use the Object.values method, something like this should do the trick:

const activeProfiles = Object.values(data.profiles).filter((profile) => profile.current === true);