来自 client.get() 的值为“true”而不是真正的价值

发布于 2024-11-27 16:19:07 字数 620 浏览 0 评论 0原文

我正在使用 nowjs 和 node_redis。我正在尝试创建一些非常简单的东西。但到目前为止，该教程让我空白，因为它们只执行 console.log()。

//REDIS
var redis = require("redis"),
    client = redis.createClient();

client.on("error", function (err) {
    console.log("Error "+ err);
});

client.set("card", "apple");

everyone.now.signalShowRedisCard = function() {
    nowjs.getGroup(this.now.room).now.receiveShowRedisCard(client.get("card").toString());
}

在我的客户端：

now.receiveShowRedisCard = function(card_id) {
    alert("redis card: "+card_id);
}

警报仅给出“true” - 我期望获得关键“card”的值，即“apple”。

有什么想法吗？

原文

I am using nowjs and node_redis. I am trying to create something very simple. But so far, the tutorial have left me blank because they only do console.log().

//REDIS
var redis = require("redis"),
    client = redis.createClient();

client.on("error", function (err) {
    console.log("Error "+ err);
});

client.set("card", "apple");

everyone.now.signalShowRedisCard = function() {
    nowjs.getGroup(this.now.room).now.receiveShowRedisCard(client.get("card").toString());
}

In my client side:

now.receiveShowRedisCard = function(card_id) {
    alert("redis card: "+card_id);
}

The alert only gives out "true" - I was expecting to get the value of the key "card" which is "apple".

Any ideas?

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笑脸一如从前 2024-12-04 16:19:07

您正在尝试以同步方式使用异步库。这是正确的方法：

//REDIS
var redis = require("redis"),
    client = redis.createClient();

client.on("error", function (err) {
    console.log("Error "+ err);
});

client.set("card", "apple", function(err) {
    if (err) throw err;
});

everyone.now.signalShowRedisCard = function() {
    var self = this;
    client.get("card", function (err, res) {
        nowjs.getGroup(self.now.room).now.receiveShowRedisCard(res);
    });
}

You are trying to use an async library in a sync way. This is the right way:

//REDIS
var redis = require("redis"),
    client = redis.createClient();

client.on("error", function (err) {
    console.log("Error "+ err);
});

client.set("card", "apple", function(err) {
    if (err) throw err;
});

everyone.now.signalShowRedisCard = function() {
    var self = this;
    client.get("card", function (err, res) {
        nowjs.getGroup(self.now.room).now.receiveShowRedisCard(res);
    });
}

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我一向站在原地 2024-12-04 16:19:07

一种选择是使用 Bluebird 将 Redis 回调转换为 Promise。然后您可以将其与 .then() 或 async/await 一起使用。

import redis from 'redis'
import bluebird from 'bluebird'

bluebird.promisifyAll(redis)
const client = redis.createClient()

await client.set("myKey", "my value")
const value = await client.getAsync("myKey")

请注意，您的方法应该附加Async。

One option is to use Bluebird to turn Redis callbacks into promises. Then you can use it with .then() or async/await.

import redis from 'redis'
import bluebird from 'bluebird'

bluebird.promisifyAll(redis)
const client = redis.createClient()

await client.set("myKey", "my value")
const value = await client.getAsync("myKey")

Notice your methods should have Async appened to them.

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风透绣罗衣 2024-12-04 16:19:07

使用异步 Redis

npm i async-redis --save

const asyncRedis = require("async-redis");    
const client = asyncRedis.createClient(); 

await client.set("string key", "string val");
const value = await client.get("string key");

console.log(value);

await client.flushall("string key");

Use Async Redis

npm i async-redis --save

const asyncRedis = require("async-redis");    
const client = asyncRedis.createClient(); 

await client.set("string key", "string val");
const value = await client.get("string key");

console.log(value);

await client.flushall("string key");

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