I want to get all values from my redis and store it into a array in nodejs
Here is my present code,
redisClient.keys("Serial*", function (err, keys) {
keys.forEach(function (key, i) {
redisClient.hgetall(key, function (err, currencyData) {
console.log(currencyData);
})
});
});
it allows me to output all values to console but I need to use these values
Assuming you need a the currencyData in an array -
function getAllCurrency(callback){
redisClient.keys("Serial*", function (err, keys) {
var allCurrencyData = [];
var counter = keys.length;
keys.forEach(function (key, i) {
redisClient.hgetall(key, function (err, currencyData) {
if(err)
return callback(err);
console.log(currencyData);
allCurrencyData.push(currencyData);
counter--;
if(counter == 0)
callback(null, allCurrencyData);
})
});
});
}
Calling from another function -
getAllCurrency(function(err, allCurrency){
// use allCurrency array here
});
This is not the best code. Also the order of elements in the array might not be the same as the keys array. For a better asynchronous control try using the async library or Promises.
allCurrencyData cannot be modified from inside another function. here hgetall is a function allCurrencyData will be a seperate variable when used inside hgetall