【问题标题】:express.js: show toastr messageexpress.js:显示 toastr 消息
【发布时间】:2016-06-22 14:01:41
【问题描述】:

我正在尝试让 Toastr 库在我的 ExpressJS 应用程序中工作!我用 yeoman 'standard' Express Generator 搭建了这个应用程序......

我需要库 express-toastr 并执行以下操作:

app.js:

const cookieParser = require('cookie-parser');
const session = require('express-session');
const flash = require('connect-flash');
const toastr = require('express-toastr');

app.use(cookieParser());
app.use(session( {secret: 'xxx', saveUninitialized: true, resave: true} ));
app.use(flash());
app.use(toastr());

index.js

const express = require('express');
const router = express.Router();
const httpntlm = require('httpntlm');

router.post('/', function (req, res, next) {

    // parse inputs
    let user = req.body.user || "";
    let password = req.body.password || "";

    // save in session
    req.session.user = {user: user, password: password};

    // appropriate response to login attempt
    if (!req.session.user) {
        res.status(401).send();
    }
    else {
        req.toastr.success('Successfully logged in.', "You're in!");

        res.render('groups', {
            req: req
        });
    }
});

module.exports = router;

index.jade

#{req.toastr.render()}

我正在我的<head> 部分中加载这些文件:

link(rel='stylesheet', href='//cdnjs.cloudflare.com/ajax/libs/toastr.js/2.0.2/css/toastr.min.css')
script(src='/components/jquery/dist/jquery.min.js')
script(src='//cdnjs.cloudflare.com/ajax/libs/toastr.js/2.0.2/js/toastr.min.js')

什么都没有显示。我错过了什么???

--更新! --

这是我完整的 app.js 文件。我现在尝试使用 express-flash 并为显示 flash 消息制作专用路由。还是行不通。请帮忙!

'use strict';

const express = require('express');
const path = require('path');
const favicon = require('serve-favicon');
const logger = require('morgan');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');

const expressSanitizer = require('express-sanitizer');

const login = require('./routes/login');
const apply = require('./routes/apply');
const admin = require('./routes/admin');

var session = require('express-session');
var flash = require('express-flash');


var app = express();


// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));






app.use(session({
    cookie: { maxAge: 60000 },
    store: new session.MemoryStore,
    saveUninitialized: true,
    resave: 'true',
    secret: 'secret'
}));
app.use(flash());

// Route that creates a flash message using the express-flash module
app.all('/express-flash', function( req, res ) {
    req.flash('success', 'This is a flash message using the express-flash module.');
    res.redirect(301, '/');
});







// sanitize inputs
app.use(expressSanitizer());

app.use('/', apply);
app.use('/apply', apply);
app.use('/login', login);
app.use('/admin', admin);


// catch 404 and forward to error handler
app.use(function (req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function (err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});

module.exports = app;

【问题讨论】:

    标签: node.js express pug toastr


    【解决方案1】:

    尝试在你的 app.js 中使用这个中间件,我发现了这个here

    app.use(function (req, res, next)
    {
        res.locals.toasts = req.toastr.render()
        next()
    });
    

    然后在你的视图中访问locals如下:

    #{toasts}
    

    这对我有用。

    【讨论】:

      【解决方案2】:

      所以我不熟悉您在 index.jade 文件中的语法(!=)。它有什么作用?如果您将索引中的那一行更改为 #{req.toastr.render()} 它应该可以工作。

      【讨论】:

      • 我试过你的建议,但还是不行。你能让它工作吗?语法 != 用于转义代码。我误解了在哪里使用它! jade-lang.com/reference/code
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