Javascript 如何处理嵌套承诺的结果
我在重构一些代码以使用承诺时遇到困难,这是为了避免嵌套回调,我尝试重构的代码如下所示:Javascript 如何处理嵌套承诺的结果,javascript,bluebird,botkit,Javascript,Bluebird,Botkit,我在重构一些代码以使用承诺时遇到困难,这是为了避免嵌套回调,我尝试重构的代码如下所示: bot.api.users.list({}, function(err, teamData) { if(err) { bot.botkit.log("Couldn't fetch team data from API", err); return; } var members = teamData.members; var msgSender = _.find(members, function(m
bot.api.users.list({}, function(err, teamData) {
if(err) {
bot.botkit.log("Couldn't fetch team data from API", err);
return;
}
var members = teamData.members;
var msgSender = _.find(members, function(member) { return member.id == message.user });
parsedUserIds(userIdsGroup).forEach(function(id) {
var msgReceiver = _.find(members, function(member) { return member.id == id });
bot.startPrivateConversation({ user: id }, function(err, conversation) {
if(err) {
bot.botkit.log("Couldn't initiate private conversation", err);
return;
}
var message = format("Hey {to}, {from} just requested a Pull Request Review, here's the link: {githubLink}, please go and check it out!",
{ to: msgReceiver.name,
from: msgSender.name,
githubLink: githubRepoUrl });
conversation.say(message);
});
});
var usersList = Promise.promisify(bot.api.users.list);
var privateConversation = Promise.promisify(bot.startPrivateConversation);
usersList({}).then(function(data) {
var members = data.members;
var msgSender = findMember(members, message.user);
return Promise.all(parsedUserIds(userIdsGroup).map(function(id) {
var msgReceiver = findMember(members, id);
return privateConversation({ user: id }).then(function(conversation) {
var message = format("Hey {to}, {from} just requested a Pull Request Review, here's the link: {githubLink}, please go and check it out!",
{ to: msgReceiver.name,
from: msgSender.name,
githubLink: githubRepoUrl });
conversation.say(message);
});
}));
}).catch(function(err){
bot.botkit.log(err);
});
我使用带有SlackAPI的botkit,并使用bluebird作为承诺
代码中最麻烦的部分是循环,循环遍历每个id并开始与用户的私人对话;我一直在尝试的是这样的:
bot.api.users.list({}, function(err, teamData) {
if(err) {
bot.botkit.log("Couldn't fetch team data from API", err);
return;
}
var members = teamData.members;
var msgSender = _.find(members, function(member) { return member.id == message.user });
parsedUserIds(userIdsGroup).forEach(function(id) {
var msgReceiver = _.find(members, function(member) { return member.id == id });
bot.startPrivateConversation({ user: id }, function(err, conversation) {
if(err) {
bot.botkit.log("Couldn't initiate private conversation", err);
return;
}
var message = format("Hey {to}, {from} just requested a Pull Request Review, here's the link: {githubLink}, please go and check it out!",
{ to: msgReceiver.name,
from: msgSender.name,
githubLink: githubRepoUrl });
conversation.say(message);
});
});
var usersList = Promise.promisify(bot.api.users.list);
var privateConversation = Promise.promisify(bot.startPrivateConversation);
usersList({}).then(function(data) {
var members = data.members;
var msgSender = findMember(members, message.user);
return Promise.all(parsedUserIds(userIdsGroup).map(function(id) {
var msgReceiver = findMember(members, id);
return privateConversation({ user: id }).then(function(conversation) {
var message = format("Hey {to}, {from} just requested a Pull Request Review, here's the link: {githubLink}, please go and check it out!",
{ to: msgReceiver.name,
from: msgSender.name,
githubLink: githubRepoUrl });
conversation.say(message);
});
}));
}).catch(function(err){
bot.botkit.log(err);
});
据我所知,Promise.all允许我从一系列承诺中获得结果。。。但是,我从以下代码中得到了一个错误:TypeError:this.task.bot.reply不是一个对我毫无帮助的函数
我怎样才能用承诺来完成我想做的事情
所有这些都能让我从一系列的承诺中得到结果
all返回一个承诺,一旦您在其中传递的所有承诺都实现,该承诺就会实现。
因此,您需要做的是调用,然后对其调用
Promise.all(parsedUserIds(userIdsGroup).map(function(id) {/*return promise here*/}))
.then(function(results) { console.log(results); })
所有这些都能让我从一系列的承诺中得到结果
all返回一个承诺,一旦您在其中传递的所有承诺都实现,该承诺就会实现。
因此,您需要做的是调用,然后对其调用
Promise.all(parsedUserIds(userIdsGroup).map(function(id) {/*return promise here*/}))
.then(function(results) { console.log(results); })