var mysql = require("mysql");
var connection = mysql.createConnection({
host: 'localhost',
user: 'root',
password: '',
database: 'nodejs'
});
exports.players_list = function(req, res) {
var data = {title: "", res: {}};
if (authenticate(req, res)) {
results_aaa(function(result) {
console.log(result);
res.render('players/players', {title: 'Players List', res: result});
});
} else {
req.session.error = 'Please login to continue.';
res.redirect('/login');
}
};
function results_aaa(callback) {
teams(function(res) {
callback(res)
});
}
function teams(callback) {
var query = connection.query("select * from team", function(err, result, fields) {
for (var index in result)
{
players(result[index].id, function(results) {
callback(results);
});
}
});
}
function players(id, callback) {
query("SELECT * FROM players where team = " + id, function(results) {
callback(results);
});
}
function query(sql, callback) {
connection.query(sql, function(error, results, fields) {
callback(results);
});
}

我正在尝试将特定团队的数据与团队成员分组。 而且我得到了部分输出。但是如果我使用console.log(),我可以在控制台中看到整个输出
控制台中的输出如下所示。
Express server listening on port 8081
[ { id: 2, player_name: 'Virat Kohli', team: '1' },
{ id: 4, player_name: 'A B DeVilliers', team: '1' },
{ id: 6, player_name: 'Chris Gayle', team: '1' } ]
GET /players 200 162ms - 638
[ { id: 7, player_name: 'Ajinkya Rahane', team: '2' },
{ id: 8, player_name: 'Shane Watson', team: '2' },
{ id: 9, player_name: 'Stuart Binny', team: '2' },
{ id: 10, player_name: 'Karun Nair', team: '2' },
{ id: 11, player_name: 'Sanju Samson', team: '2' } ]
[ { id: 1, player_name: 'Virender Sehwag', team: '3' },
{ id: 3, player_name: 'David Miller', team: '3' },
{ id: 5, player_name: 'Shaun Marsh', team: '3' } ]
只有1的团队ID出现在玉视图中。
并且遵循的程序是正确的。我是节点js的新手。
提前致谢:)
答案 0 :(得分:0)
这是因为您在收到第一个回调后发送回复,即team1结果,在您收到其他两个回合之前,即第2和第3个团队结果。
在功能团队()中,使用
if(index == result.length-1){callback(results); }
而不仅仅是
回调(结果);
在for
循环内。