Question

我试图在路线中动态传递密钥名称，但总是给我undefined

这是我尝试的代码，但似乎无法正确使用。我试图传递的动态名称是arrayname，它将根据参数

进行更改

router.get('/searchterm/table/:table/term/:term/fields/:fields/render/:render/arrayname/:arrayname', function (req, res, next) {

    var pagetorender = req.params.render;
    var arrayname = req.params.arrayname;

    db.query('select * from ' + req.params.table + ' where ' + strfields, function (err, result) {
        if (err) {
                res.send(err)
            } else {
                console.log(arrayname)
                console.log(result.rows)
                res.render(pagetorender, { arrayname: result.rows })    
            }   
    })
})

例如，如果我必须传递

res.render(pagetorender, { test123: result.rows })

就像

var arrayname = "test123";
res.render(pagetorender, { arrayname: result.rows })

Answer 1

你可以用req.param（“param name”）获得params;所以试试这样的事情

router.get('/searchterm/table/:table/term/:term/fields/:fields/render/:render/arrayname/:arrayname', function (req, res, next) {

    var pagetorender = req.param("render");
    var arrayname = req.param("arrayname");

    db.query('select * from ' + req.params.table + ' where ' + strfields, function (err, result) {
        if (err) {
                res.send(err)
            } else {
                console.log(arrayname)
                console.log(result.rows)
                res.render(pagetorender, { arrayname: result.rows })    
            }   
    })
})

关键变化是：

var pagetorender = req.param("render");
var arrayname = req.param("arrayname");

Express.js从路由中的变量值传递密钥名称

1 个答案: