如何验证＆＃34;字段＆＃34;在node.js上形式强大吗？

Question

如何验证＆＃34;字段＆＃34;在node.js上形式强大吗？我想确保所有字段都由用户填写。在express中我们有req.validationErrors()

之类的东西

form.parse(req, function(err, fields, files)

提前致谢

Answer 1

您可以抛出错误，然后使用form.on('error', fn)抓住它 这是一个简单的例子：

// Create a Route (/upload) to handle the form submission.
app.post('/upload', function(req, res, next) {
    var requiredFields = ['name', 'email'];

    // Whenever a field / value pair has been received.
    form.on('field', function(name, value) {
        if (requiredFields.indexOf(name) > -1 && !value) {
            // field is required and its value is empty
            form._error('Required field is empty!');
            return;
        }
    });

    // Send error message back to client.
    form.on('error', function (message) {
        res.end(message);
    });
});