how to get all users in redis - node.js

Question

I have the following code .
var redis = require("redis"),
client = redis.createClient();
user_rahul = {
username: 'rahul'
};
user_namita = {
username: 'namita'
};
client.hmset('users.rahul', user_rahul);
client.hmset('users.namita', user_namita);
var username = "rahul"; // From a POST perhaps
client.hgetall("users" , function(err, user) {
console.log(user);
});
I want to get all the users list how i can get all users list this what i tried but its not working.

Answer 1

You are setting the users in their own hash, so when you do hgetall users, you are trying to get all the members of the users hash. You should do:
var redis = require("redis"),
client = redis.createClient();
user_rahul = {
username: 'rahul'
};
user_namita = {
username: 'namita'
};
client.hset('users', user_rahul, 'Another Value, Pass Maybe?');
client.hset('users', user_namita, 'Another Value, Pass Maybe?');
var username = "rahul"; // From a POST perhaps
client.hgetall("users" , function(err, user) {
console.log(user);
});
You should consider using a list instead, if you dont need any data in the second hash value

Answer 2

How about this
var flow = require('flow'); //for async calls
var redis = require("redis").createClient();
function AddUser(user,callback){
flow.exec(
function(){
//AI for Keep unique
redis.incr('nextUserId',this);
},
function(err,userId){
if(err) throw err;
this.userId = userId;
redis.lpush('users',userId,this.MULTI());
redis.hmset('user:'+userId+':profile',user,MULTI());
},
function(results){
results.forEach(function(result){
if(result[0]) throw result[0];
});
callback(this.userId);
}
);
}
user_rahul = {username: 'rahul'};
user_namita = {username: 'namita'};
//Add user
AddUser(user_rahul,function(userId){
console.log('user Rahul Id' + userId);
});
AddUser(user_namita,function(userId){
console.log('user Namita Id' + userId);
});
//users
function Users(callback){
var users = [];
flow.exec(
function(){
redis.lrange('users',0,-1,this);
},
function(err,userIds){
if(err) throw err;
flow.serialForEach(userIds,function(userId){
redis.hgetall('user:'+userId+':profile',this);
},
function(err,val){
if(err) throw err;
users.push(val);
},
function(){
callback(users);
});
}
);
}
//call
Users(function(users){
console.log(users);
});

Answer 3

For Single User
function getUser(userId,callback){
redis.hgetall('user:'+ userId +':profile',function(err,profile){
if(err) throw err;
callback(profile);
});
}
getUser(1,function(profile){
console.log(profile);
});