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私の問題は、入力ボックスからSQLテーブルにデータを入力することができますが、問題はテーブルのテキストが必要なページに表示されないことですに。何がうまくいくのは、プレイリストページには、テキスト以外のプレイリストの数に応じてhrefリンクが表示されるということです。Node.js SQLデータベース内のテーブルからのSELECT * from
セキュリティ上の理由から、データベースの詳細を除外しました。
playlist.jade
extends layout
block content
h1= title
p Welcome to #{title}
h1 My Playlists
br
a(href='/login') Login
br
a(href='/users/createPlaylist') Create a new Playlists
br
a(href='/users/playlistCreated') test
br
for playlist, i in playlists
a(href='/users/playlistCreated') | #{playlist.text}
br
users.js
var express = require('express');
var mysql = require('mysql');
var router = express.Router();
var dbConnectionInfo = {
host : '',
user : '',
password : '',
database : 'audio_collections'
};
router.get('/createPlaylist', function(req, res, next) {
res.render('new_playlist');
});
router.get('/playlistCreated', function(req, res, next) {
res.render('name_of_created_playlist');
});
router.get('/songCreated', function(req, res, next) {
res.render('song_page');
});
router.get('/newSong', function(req, res, next) {
res.render('new_song');
});
router.post('/newPlaylist', function(req, res, next) {
var dbConnection = mysql.createConnection(dbConnectionInfo);
dbConnection.connect();
dbConnection.on('error', function(err) {
if (err.code == 'PROTOCOL_SEQUENCE_TIMEOUT') {
// Let's just ignore this
console.log('Got a DB PROTOCOL_SEQUENCE_TIMEOUT Error ... ignoring ');
} else {
// I really should do something better here
console.log('Got a DB Error: ', err);
}
});
var playlist = {
text: req.body.thePlaylist
};
dbConnection.query('INSERT INTO Playlists (playlist_name) VALUES(?)', [playlist.text], function(err, results, fields) {
// error will be an Error if one occurred during the query
// results will contain the results of the query
// fields will contain information about the returned results fields (if any)
if (err) {
throw err;
}
// notice that results.insertId will give you the value of the AI (auto-increment) field
playlist.id = results.insertId;
// Going to convert my joke object to a JSON string a print it out to the console
console.log(JSON.stringify(playlist));
// Close the connection and make sure you do it BEFORE you redirect
dbConnection.end();
res.redirect('/');
});
router.post('/newSongAdded', function(req, res, next) {
var dbConnection = mysql.createConnection(dbConnectionInfo);
dbConnection.connect();
dbConnection.on('error', function(err) {
if (err.code == 'PROTOCOL_SEQUENCE_TIMEOUT') {
// Let's just ignore this
console.log('Got a DB PROTOCOL_SEQUENCE_TIMEOUT Error ... ignoring ');
} else {
// I really should do something better here
console.log('Got a DB Error: ', err);
}
});
var song = {
text: req.body.theSong,
url: req.body.theSongURL
};
dbConnection.query('INSERT INTO Songs (song_name, song_url) VALUES(?,?)',[song.text, song.url], function(err, results,fields) {
// error will be an Error if one occurred during the query
// results will contain the results of the query
// fields will contain information about the returned results fields (if any)
if (err) {
throw err;
}
// notice that results.insertId will give you the value of the AI (auto-increment) field
song.id = results.insertId;
// Going to convert my joke object to a JSON string a print it out to the console
console.log(JSON.stringify(song));
// Close the connection and make sure you do it BEFORE you redirect
dbConnection.end();
res.redirect('/');
});
});
});
module.exports = router;
index.js
var express = require('express');
var mysql = require('mysql');
var router = express.Router();
var dbConnectionInfo = {
host : '',
user : '',
password : '',
database : 'audio_collections'
};
/* GET home page. */
router.get('/login', function(req, res, next) {
res.render('login');
});
router.post('/login', function(req, res, next) {
var username = req.body.username;
username = username.trim();
if (username.length == 0) {
res.redirect('/login');
}
else {
req.session.username = username;
res.redirect('/');
}
});
router.get('/', function(req, res, next) {
var dbConnection = mysql.createConnection(dbConnectionInfo);
dbConnection.connect();
dbConnection.on('error', function(err) {
if (err.code == 'PROTOCOL_SEQUENCE_TIMEOUT') {
// Let's just ignore this
console.log('Got a DB PROTOCOL_SEQUENCE_TIMEOUT Error ... ignoring ');
} else {
// I really should do something better here
console.log('Got a DB Error: ', err);
}
});
dbConnection.query('SELECT * FROM Playlists', function(err, results, fields){
if (err) {
throw err;
}
var allPlaylists = new Array();
for (var i = 0; i < results.length; i++) {
var playlist = {
id: results[i].id,
text: results[i].text
};
console.log(JSON.stringify(playlist));
allPlaylists.push(playlist);
}
dbConnection.end();
res.render('playlists', {playlists: allPlaylists});
});
router.get('/users/playlistCreated', function(req, res, next) {
var dbConnection = mysql.createConnection(dbConnectionInfo);
dbConnection.connect();
dbConnection.on('error', function(err) {
if (err.code == 'PROTOCOL_SEQUENCE_TIMEOUT') {
// Let's just ignore this
console.log('Got a DB PROTOCOL_SEQUENCE_TIMEOUT Error ... ignoring ');
} else {
// I really should do something better here
console.log('Got a DB Error: ', err);
}
});
dbConnection.query('SELECT * FROM Songs', function(err, results, fields){
if (err) {
throw err;
}
var allSongs = new Array();
for (var i = 0; i < results.length; i++) {
var song = {};
song.id = results[i].id;
song.text = results[i].text;
song.url = results[i].url;
console.log(JSON.stringify(song));
allSongs.push(song);
}
dbConnection.end();
res.render('name_of_created_playlist', {songs: allSongs});
});
});
});
module.exports = router;
new_playlist.jade
extends layout
block content
form(method='POST', action='/users/newPlaylist')
div
label(for='thePlaylist') Name of Playlist
div
textarea(type='text', name='thePlaylist')
br
input(type='submit', name='Add new Playlist')
a(href='/') Cancel
は、私は助けを本当に感謝して、私は今、一週間のために、この上で立ち往生されているデータベースとテーブルのセットアップ
です。それは私が私の配列
のみ必要とするvar allPlaylist =結果内側のループのために必要なdidntの