Javascript 为什么这个变量不能从我的express应用程序传递给jade？

我的express应用程序具有以下代码：

app.get('/dashboard', function (req, res) {
    Student.findOne({
        email: req.session.email
    }).exec(function (err, studentData) {
        if (studentData) {
            console.log(studentData);
            res.render('dashboard', {
                info:{
                    username: studentData.username,
                    email: studentData.email,
                    roll: studentData.roll,
                    department: studentData.department,
                    regYear: studentData.regYear
                }
            });
        } else {
            res.render('index');
        }
    });
});

doctype html
html
    head
        meta(charset='UTF-8')
        title I N C U B A T I O N
        link(rel='stylesheet', href='/bower_components/Materialize/bin/materialize.css')
        script(src='/bower_components/jquery/dist/jquery.min.js')
        script(src='/bower_components/Materialize/bin/materialize.js')
        link(rel='stylesheet', type='text/css', href='css/main.css')
        script.
            console.log(!{locals.info.username});

    body
        ul#slide-out.side-nav.fixed
            li
                .row.valign-wrapper.profile_picture
                    .col.s3
                    .col.s6
                        img.circle.responsive-img(src='http://1.bp.blogspot.com/_Mt4qyhflsHY/S8wCjflidQI/AAAAAAAAAhI/FiTJiysCYus/s1600/gravatar.jpg', alt='')
                        // notice the "circle" class
                    .col.s3
            li
                .row.valign-wrapper
                    p #{info.username}

        a.button-collapse(href='#', data-activates='slide-out')
            i.mdi-navigation-menu

我的jade模板具有以下代码：

app.get('/dashboard', function (req, res) {
    Student.findOne({
        email: req.session.email
    }).exec(function (err, studentData) {
        if (studentData) {
            console.log(studentData);
            res.render('dashboard', {
                info:{
                    username: studentData.username,
                    email: studentData.email,
                    roll: studentData.roll,
                    department: studentData.department,
                    regYear: studentData.regYear
                }
            });
        } else {
            res.render('index');
        }
    });
});

doctype html
html
    head
        meta(charset='UTF-8')
        title I N C U B A T I O N
        link(rel='stylesheet', href='/bower_components/Materialize/bin/materialize.css')
        script(src='/bower_components/jquery/dist/jquery.min.js')
        script(src='/bower_components/Materialize/bin/materialize.js')
        link(rel='stylesheet', type='text/css', href='css/main.css')
        script.
            console.log(!{locals.info.username});

    body
        ul#slide-out.side-nav.fixed
            li
                .row.valign-wrapper.profile_picture
                    .col.s3
                    .col.s6
                        img.circle.responsive-img(src='http://1.bp.blogspot.com/_Mt4qyhflsHY/S8wCjflidQI/AAAAAAAAAhI/FiTJiysCYus/s1600/gravatar.jpg', alt='')
                        // notice the "circle" class
                    .col.s3
            li
                .row.valign-wrapper
                    p #{info.username}

        a.button-collapse(href='#', data-activates='slide-out')
            i.mdi-navigation-menu

我想将变量从我的节点应用程序传递到模板，但无法传递。

---

我做错了什么？

您在express中将视图引擎设置为jade了吗

app.set('view engine', 'jade');

---

您不必在变量前面加上

局部变量。

在jade中。从调用

render

的结构来看，似乎您正在设置

info.username

，而不是

locals.info.username

这意味着您应该使用

console.log(!{info.username});

---

不，这没用，同样的结果。是的，也一样。我尝试显式设置res.locals变量，但如果它作为第二个参数传递，则不起作用。