Only add a object node to an existing object if a specific condition is set

March 16, 2023

I get some data from the database using the following sql command:

SELECT users.skin, users.name, users.money, users.money_bank, users.fraction_id, users.fraction_id2, users.family_id, users.online_time, ban_list.ban_from, ban_list.ban_to, ban_list.count, ban_list.datetime, ban_list.reason FROM users LEFT OUTER JOIN ban_list ON users.name = ban_list.ban_to WHERE users.social = ? LIMIT 3

the response would look like this:

Response from sql query

Now I create a Json stringified object to use it later on using the following code:

let charackters = [];

let nameData =  row['name'].split(" ");

charackters.push({
    spawnIndex: 0,
    name: nameData[0],
    surname: nameData[1],
    level: 0,
    cash: row['money'],
    bank: row['money_bank'],
    gender: gender,
    fraction: fraction,
    family: row['family_id'],
    playedTime: row['online_time'],
    ban: {
        penalty: row['count'],
        reason: row['reason'],
        admin: row['ban_from'],
        dateOfBan: row['datetime']
    }
});

let charackterObject = {
    characters: charackters
}
  
let charackterJson = JSON.stringify(charackterObject);

My problem is that the following part:

ban: {
    penalty: row['count'],
    reason: row['reason'],
    admin: row['ban_from'],
    dateOfBan: row['datetime']
}

should only be added if penalty, reason, admin, dateOfBan have values unlike NULL. How could i archive this since i can’t use a if statement?

To create a if statement

>Solution :

You can have an if

const obj = {
  spawnIndex: 0,
  name: nameData[0],
  surname: nameData[1],
  level: 0,
  cash: row['money'],
  bank: row['money_bank'],
  gender: gender,
  fraction: fraction,
  family: row['family_id'],
  playedTime: row['online_time']
 }
 const ban = {};
 if (row['count']) ban["penalty"] = row['count'];
 if (row['reason']) ban["reason"] = row['reason'];
 if (row['ban_from']) ban["admin"] = row['ban_from'];
 if (row['datetime']) ban["dateOfBan"] = row['datetime'];
 if (Object.keys(ban).length > 0) obj["ban"] = ban;
 
 charackters.push(obj);